Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308955
S. Parvathy, K. Thampatty, T. Nambiar
The power transmission network and its effective utilization are the recent topic of interest. Flexible AC Transmission Systems (FACTS) devices are equipped in the transmission lines for control of real and reactive power flow. The reactive power compensation can be done with STATic COMpensator (STATCOM). The appropriate amount of reactive power generated by the STATCOM will improve voltage stability in the buses. The Non Linear Controller namely Feedback Linearization Controller (FBLC) is used for controlling the Voltage Source Converter of STATCOM. The closed loop control of STATCOM with FBLC using MATLAB/SIMULINK is described in this paper. The results shows that with the proposed controller, DC link capacitor voltage and AC coupling voltage of STATCOM are attained its desired value. The load flow analysis with STATCOM in IEEE 5 bus system shows that losses in the network are reduced and thus transmission efficiency is improved.
{"title":"Modeling and non linear control of STATCOM for VAR compensation in IEEE 5 bus system","authors":"S. Parvathy, K. Thampatty, T. Nambiar","doi":"10.1109/APPEEC.2017.8308955","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308955","url":null,"abstract":"The power transmission network and its effective utilization are the recent topic of interest. Flexible AC Transmission Systems (FACTS) devices are equipped in the transmission lines for control of real and reactive power flow. The reactive power compensation can be done with STATic COMpensator (STATCOM). The appropriate amount of reactive power generated by the STATCOM will improve voltage stability in the buses. The Non Linear Controller namely Feedback Linearization Controller (FBLC) is used for controlling the Voltage Source Converter of STATCOM. The closed loop control of STATCOM with FBLC using MATLAB/SIMULINK is described in this paper. The results shows that with the proposed controller, DC link capacitor voltage and AC coupling voltage of STATCOM are attained its desired value. The load flow analysis with STATCOM in IEEE 5 bus system shows that losses in the network are reduced and thus transmission efficiency is improved.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129624695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308930
Vulisi Narendra Kumar, B. R. Naidu, G. Panda
The wide penetration of low voltage renewable energy sources into microgrid necessitates the use of high-gain converters as power processing units escorted with dynamic control methodologies. Under this scenario, this paper investigates the performance of high-gain converter forming a common DC common link in a hybrid DC microgrid comprising of solar photovoltaic (SPV) generation, supercapacitor and battery bank. A high gain DC-DC boost power stage is used to couple the SPV array to the common DC common link, whereas high gain bi-directional converter is used to link the energy storage devices to the common DC bus. The high gain topologies used in this paper employs coupling inductor, intermediate buffer capacitor and a passive clamp network to obtain the high voltage gain with the same number of switches as that of the conventional topologies. A dual-loop control strategy has been employed for the operation of interfacing high gain converters. Hardware-in-Loop (HIL) validation of the presented control scheme is carried out using Zynq ZC702 FPGA kit via Xilinx system generator.
{"title":"Hardware-in-loop validation of a dynamic control employed for a hybrid DC microgrid incorporating high gain DC-DC power stages","authors":"Vulisi Narendra Kumar, B. R. Naidu, G. Panda","doi":"10.1109/APPEEC.2017.8308930","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308930","url":null,"abstract":"The wide penetration of low voltage renewable energy sources into microgrid necessitates the use of high-gain converters as power processing units escorted with dynamic control methodologies. Under this scenario, this paper investigates the performance of high-gain converter forming a common DC common link in a hybrid DC microgrid comprising of solar photovoltaic (SPV) generation, supercapacitor and battery bank. A high gain DC-DC boost power stage is used to couple the SPV array to the common DC common link, whereas high gain bi-directional converter is used to link the energy storage devices to the common DC bus. The high gain topologies used in this paper employs coupling inductor, intermediate buffer capacitor and a passive clamp network to obtain the high voltage gain with the same number of switches as that of the conventional topologies. A dual-loop control strategy has been employed for the operation of interfacing high gain converters. Hardware-in-Loop (HIL) validation of the presented control scheme is carried out using Zynq ZC702 FPGA kit via Xilinx system generator.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128726804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308988
Sathish Athiappan, S. Chakrabarti, S. Anand
Detailed harmonic analysis is desirable to study the adverse impact of increasing harmonic loads on the power system. Harmonic loads needs to be modeled accurately for such analysis. Conventionally Constant current model is used to model the harmonic loads for analysis. However, recently to incorporate cross coupling effect among harmonics, Frequency Coupling Matrix (FCM) based model is suggested in literature. So far FCM model is mostly used to represent individual non-linear devices obtained either analytically or through measurements under test conditions. However, techniques for determining aggregate FCM model are not discussed in literature. To address this, technique based on artificial disturbance using distributed generation sources to determine aggregate FCM is proposed in this paper. This model accurately captures the attenuation effect of distorted bus voltages on the load harmonic injections. Further, FCM based method is used to analyze a 11 bus radial distribution system and the results are compared with constant current model based method.
{"title":"Estimation and utilization of aggregate harmonic load model","authors":"Sathish Athiappan, S. Chakrabarti, S. Anand","doi":"10.1109/APPEEC.2017.8308988","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308988","url":null,"abstract":"Detailed harmonic analysis is desirable to study the adverse impact of increasing harmonic loads on the power system. Harmonic loads needs to be modeled accurately for such analysis. Conventionally Constant current model is used to model the harmonic loads for analysis. However, recently to incorporate cross coupling effect among harmonics, Frequency Coupling Matrix (FCM) based model is suggested in literature. So far FCM model is mostly used to represent individual non-linear devices obtained either analytically or through measurements under test conditions. However, techniques for determining aggregate FCM model are not discussed in literature. To address this, technique based on artificial disturbance using distributed generation sources to determine aggregate FCM is proposed in this paper. This model accurately captures the attenuation effect of distorted bus voltages on the load harmonic injections. Further, FCM based method is used to analyze a 11 bus radial distribution system and the results are compared with constant current model based method.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126481887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308939
Sewtohul Ghirendra Gossagne, Oree Vishwamitra
Mauritius is targeting to significantly increase its electricity generation capacity through solar photovoltaic technologies in the future. The uncontrollable and unpredictable nature of the power output from these technologies could lead to power system reliability issues. In this context, the capacity credit of an operational 15 MW solar photovoltaic farm is evaluated using a Hierarchical Level 1 analysis based on effective load carrying capability. The loss of load expectation for the power system is found to be 0.145 hours/year while the capacity credit of the solar photovoltaic farm is 23.9%. These results indicate that the generation capacity of power system is adequate to supply consumers with minimum risk of energy shortage. Moreover, the high value of the capacity credit is due to the very low penetration rate of intermittent renewable energy in the grid. Further simulations show that the capacity credit will decrease below 10% if penetration rates reach 20%.
{"title":"Assessing capacity credit of a solar photovoltaic farm in an island power system","authors":"Sewtohul Ghirendra Gossagne, Oree Vishwamitra","doi":"10.1109/APPEEC.2017.8308939","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308939","url":null,"abstract":"Mauritius is targeting to significantly increase its electricity generation capacity through solar photovoltaic technologies in the future. The uncontrollable and unpredictable nature of the power output from these technologies could lead to power system reliability issues. In this context, the capacity credit of an operational 15 MW solar photovoltaic farm is evaluated using a Hierarchical Level 1 analysis based on effective load carrying capability. The loss of load expectation for the power system is found to be 0.145 hours/year while the capacity credit of the solar photovoltaic farm is 23.9%. These results indicate that the generation capacity of power system is adequate to supply consumers with minimum risk of energy shortage. Moreover, the high value of the capacity credit is due to the very low penetration rate of intermittent renewable energy in the grid. Further simulations show that the capacity credit will decrease below 10% if penetration rates reach 20%.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127724621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308973
Anupam Sharma, Madhu Sharma
Solar Energy purvey a pure Environment-friendly, ample and everlasting energy resource to humanity. Electricity can be generated using solar energy by two different technologies namely photovoltaic (PV) and concentrated solar power (CSP) systems. By using thermal energy storage technologies, CSP systems can store energy to generate electric power on cloudy days or overnight as compared to PV systems which results in flexibility in power network. Most important issue in energy market is the competitive cost of energy. Energy price of PV plant is less as compared to CSP plants. Whereas, CSP systems with thermal Energy storage capabilities can be effectively used to overcome intermittency issues of PV systems to balance demand with the supply of Electric power within safe levels of reliability by optimizing the Energy produced. This paper try to figure out the possible ways to optimize power and energy produced by Solar Energy technologies to reduce Carbon footprint. In addition to that, Solar PV and CSP systems are compared at two locations of tropical country India and simulations has been done in System Advisor Model (SAM) and presented graphically.
{"title":"Power & energy optimization in solar photovoltaic and concentrated solar power systems","authors":"Anupam Sharma, Madhu Sharma","doi":"10.1109/APPEEC.2017.8308973","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308973","url":null,"abstract":"Solar Energy purvey a pure Environment-friendly, ample and everlasting energy resource to humanity. Electricity can be generated using solar energy by two different technologies namely photovoltaic (PV) and concentrated solar power (CSP) systems. By using thermal energy storage technologies, CSP systems can store energy to generate electric power on cloudy days or overnight as compared to PV systems which results in flexibility in power network. Most important issue in energy market is the competitive cost of energy. Energy price of PV plant is less as compared to CSP plants. Whereas, CSP systems with thermal Energy storage capabilities can be effectively used to overcome intermittency issues of PV systems to balance demand with the supply of Electric power within safe levels of reliability by optimizing the Energy produced. This paper try to figure out the possible ways to optimize power and energy produced by Solar Energy technologies to reduce Carbon footprint. In addition to that, Solar PV and CSP systems are compared at two locations of tropical country India and simulations has been done in System Advisor Model (SAM) and presented graphically.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128768551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308986
Joyce Jacob, N. D. Mon, P. Preetha
The thermal properties of a transformer insulating oil determines the loading capacity and working life of a transformer. Nanotechnology implementation in liquid dielectrics has resulted in nanofluids with improved thermal and electrical properties. The paper details upon an electro-thermal analogous model to find the thermal resistance and thermal capacitance of unfilled and Aluminum Nitride nanoparticle filled transformer oil at different particle concentration. The simulation of the thermal model for unfilled and filled insulating fluids has been done using Comsol Multiphysics and the results have been validated experimentally. Both the simulation and experimental results show a considerable reduction in the thermal resistance and thermal capacitance of the filled transformer oil. An optimal nanoparticle concentration of 0.20 percentage by weight provides the desired thermal characteristics without compromising on the stability of the nanofluid. The results indicate improved thermal properties and hence longer transformer life for nanocomposite filled transformer oil than the unfilled transformer oil.
{"title":"Experimental validation of thermal model of unfilled and nano filled transformer oils","authors":"Joyce Jacob, N. D. Mon, P. Preetha","doi":"10.1109/APPEEC.2017.8308986","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308986","url":null,"abstract":"The thermal properties of a transformer insulating oil determines the loading capacity and working life of a transformer. Nanotechnology implementation in liquid dielectrics has resulted in nanofluids with improved thermal and electrical properties. The paper details upon an electro-thermal analogous model to find the thermal resistance and thermal capacitance of unfilled and Aluminum Nitride nanoparticle filled transformer oil at different particle concentration. The simulation of the thermal model for unfilled and filled insulating fluids has been done using Comsol Multiphysics and the results have been validated experimentally. Both the simulation and experimental results show a considerable reduction in the thermal resistance and thermal capacitance of the filled transformer oil. An optimal nanoparticle concentration of 0.20 percentage by weight provides the desired thermal characteristics without compromising on the stability of the nanofluid. The results indicate improved thermal properties and hence longer transformer life for nanocomposite filled transformer oil than the unfilled transformer oil.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129159863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308901
Shubo Sun, Xin Sun, Zhiwen Zhang, C. Zhai, Song Li
The application of power electronics in HVDC systems inevitably lead to various power quality problems, such as harmonic pollution, reactive loss and commutation failure, etc. To solve these issues, this paper proposes a novel shunt capacitor commutated converters (SCCC) to figure them out. The topology can be described as follows, the shunt capacitors are installed at the altering current (ac) bus between the valve winding of converter transformers and the converters, it can replaces the conventional HVDC system with line commutated converters (LCC) where the harmonic filters and shunt capacitors are installed at the ac grid side. Firstly, the characteristics and operating mechanism of the new HVDC system with SCCC are analyzed, and then, the harmonic equivalent model is established. Moreover, the mathematical model for the SCCC-HVDC system is presented. The feasibility of the proposed new topology is validated by simulation results. It manifests that the shunt capacitors not only greatly absorbs the high-order harmonic but also eliminates the commutation angle μ absolutely, hence, the commutation ability can be enhanced greatly. Besides, it also presents good filtering and reactive power compensating performances to public networks.
{"title":"Study on mechanism and characteristics of HVDC system with the novel shunt capacitor commutated converters","authors":"Shubo Sun, Xin Sun, Zhiwen Zhang, C. Zhai, Song Li","doi":"10.1109/APPEEC.2017.8308901","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308901","url":null,"abstract":"The application of power electronics in HVDC systems inevitably lead to various power quality problems, such as harmonic pollution, reactive loss and commutation failure, etc. To solve these issues, this paper proposes a novel shunt capacitor commutated converters (SCCC) to figure them out. The topology can be described as follows, the shunt capacitors are installed at the altering current (ac) bus between the valve winding of converter transformers and the converters, it can replaces the conventional HVDC system with line commutated converters (LCC) where the harmonic filters and shunt capacitors are installed at the ac grid side. Firstly, the characteristics and operating mechanism of the new HVDC system with SCCC are analyzed, and then, the harmonic equivalent model is established. Moreover, the mathematical model for the SCCC-HVDC system is presented. The feasibility of the proposed new topology is validated by simulation results. It manifests that the shunt capacitors not only greatly absorbs the high-order harmonic but also eliminates the commutation angle μ absolutely, hence, the commutation ability can be enhanced greatly. Besides, it also presents good filtering and reactive power compensating performances to public networks.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133893267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308903
Zhen Zhang, Zhanjun Gao, Siyuan Li, Yan Zhao
A new method of fault location of distribution network based on the tree structure diagram and improved Dempster-Shafer Theory of evidence is proposed to solve the problem of misjudgment caused by abnormal fault information in distribution network. Firstly, this paper presents a new search method based on tree structure diagram. Through the tree structure diagram, we can ensure the initial positioning result respectively based on three different alarm information. The three alarm information include fault indicator information, distribution transformer information and trouble calls. And then, through using the improved Dempster-Shafer Theory of evidence, we can integrate the initial positioning results to get the final positioning result. Finally, a concrete example is given to demonstrate the effectiveness and feasibility of this method, which indicates that the method can solve the problem when misinformation or information happens. The outstanding advantage of this method is that the multi-source information is used to locate the fault, and the misjudgment due to the abnormality of the single source information can be avoided.
{"title":"The method of distribution network fault location based on improved Dempster-Shafer Theory of evidence","authors":"Zhen Zhang, Zhanjun Gao, Siyuan Li, Yan Zhao","doi":"10.1109/APPEEC.2017.8308903","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308903","url":null,"abstract":"A new method of fault location of distribution network based on the tree structure diagram and improved Dempster-Shafer Theory of evidence is proposed to solve the problem of misjudgment caused by abnormal fault information in distribution network. Firstly, this paper presents a new search method based on tree structure diagram. Through the tree structure diagram, we can ensure the initial positioning result respectively based on three different alarm information. The three alarm information include fault indicator information, distribution transformer information and trouble calls. And then, through using the improved Dempster-Shafer Theory of evidence, we can integrate the initial positioning results to get the final positioning result. Finally, a concrete example is given to demonstrate the effectiveness and feasibility of this method, which indicates that the method can solve the problem when misinformation or information happens. The outstanding advantage of this method is that the multi-source information is used to locate the fault, and the misjudgment due to the abnormality of the single source information can be avoided.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122377810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308922
K. Narayanan, L. Umanand
This paper presents a novel active phase router for dynamic load balancing in a three-phase system. Uneven distribution of single phase loads may result in current unbalances among the three-phase lines. The current unbalances in a three-phase system results in increased power losses due to presence of the negative sequence currents. The loading capacity of the distribution transformers and the three phase lines in the microgrid also gets limited below their nominal ratings. The proposed phase router can be used to mitigate the effect of unbalance caused by single phase loads in the three phase microgrids. The phase router uses a set of bidirectional semiconductor switches for routing the single-phase loads to the appropriate three phase lines with the objective of minimizing unbalance in the three phase lines. Expressions have been derived to obtain optimal switching instances with minimum transients for different types of loads. The proposed phase router has been simulated and experimentally verified through a prototype.
{"title":"A novel active phase router for dynamic load balancing in a three phase microgrid","authors":"K. Narayanan, L. Umanand","doi":"10.1109/APPEEC.2017.8308922","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308922","url":null,"abstract":"This paper presents a novel active phase router for dynamic load balancing in a three-phase system. Uneven distribution of single phase loads may result in current unbalances among the three-phase lines. The current unbalances in a three-phase system results in increased power losses due to presence of the negative sequence currents. The loading capacity of the distribution transformers and the three phase lines in the microgrid also gets limited below their nominal ratings. The proposed phase router can be used to mitigate the effect of unbalance caused by single phase loads in the three phase microgrids. The phase router uses a set of bidirectional semiconductor switches for routing the single-phase loads to the appropriate three phase lines with the objective of minimizing unbalance in the three phase lines. Expressions have been derived to obtain optimal switching instances with minimum transients for different types of loads. The proposed phase router has been simulated and experimentally verified through a prototype.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121234256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-11-01DOI: 10.1109/APPEEC.2017.8308947
W. Zhang, Hao Quan, Oktoviano Gandhi, Carlos D. Rodríguez-Gallegos, Anurag Sharma, D. Srinivasan
Photovoltaic (PV) generation forecasting plays an important role in accommodating more distributed PV sites into power systems. However, due to the stochastic nature of PV generation, conventional point forecast methods can hardly quantify the uncertainties of PV generation. Being capable of quantifying uncertainties, probabilistic forecasting tools, like prediction intervals (PIs), are receiving increasing attention. This paper proposes a new framework to construct PIs and make point forecasts. In the proposed framework, an efficient and robust algorithm is employed to perform quantile regression. Based on the quantile regression results, PIs for multiple confidence levels are constructed utilizing different quantiles. Simulation results on a PV generation system reveal that the proposed framework is more reliable and accurate, compared with state-of-the-art methods, as measured by multiple performance indices.
{"title":"An ensemble machine learning based approach for constructing probabilistic PV generation forecasting","authors":"W. Zhang, Hao Quan, Oktoviano Gandhi, Carlos D. Rodríguez-Gallegos, Anurag Sharma, D. Srinivasan","doi":"10.1109/APPEEC.2017.8308947","DOIUrl":"https://doi.org/10.1109/APPEEC.2017.8308947","url":null,"abstract":"Photovoltaic (PV) generation forecasting plays an important role in accommodating more distributed PV sites into power systems. However, due to the stochastic nature of PV generation, conventional point forecast methods can hardly quantify the uncertainties of PV generation. Being capable of quantifying uncertainties, probabilistic forecasting tools, like prediction intervals (PIs), are receiving increasing attention. This paper proposes a new framework to construct PIs and make point forecasts. In the proposed framework, an efficient and robust algorithm is employed to perform quantile regression. Based on the quantile regression results, PIs for multiple confidence levels are constructed utilizing different quantiles. Simulation results on a PV generation system reveal that the proposed framework is more reliable and accurate, compared with state-of-the-art methods, as measured by multiple performance indices.","PeriodicalId":247669,"journal":{"name":"2017 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129227249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：