Pub Date : 2016-10-01DOI: 10.1109/APPEEC.2016.7779559
Yueyang Ma, G. Zou, Zhanjun Gao, Tao Du
This paper proposes a new pilot protection method for ultra-high voltage (UHV) transmission line, which is based on the characteristics of the average value of the fault component current. Theoretic analysis shows for an internal fault, the signs of the average values of the fault component current detected by relays on both ends of the line are identical, while they are opposite for an external fault. Through comparing the signs of the average values detected by two relays on both ends of the line, an internal fault can be distinguished from an external fault. Using PSCAD software, a 1000 kV transmission line model was constructed, and extensive simulations were performed. The simulation results indicate the validity and feasibility of the proposed protection method.
{"title":"A fast directional comparison pilot protection for UHV transmission line","authors":"Yueyang Ma, G. Zou, Zhanjun Gao, Tao Du","doi":"10.1109/APPEEC.2016.7779559","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779559","url":null,"abstract":"This paper proposes a new pilot protection method for ultra-high voltage (UHV) transmission line, which is based on the characteristics of the average value of the fault component current. Theoretic analysis shows for an internal fault, the signs of the average values of the fault component current detected by relays on both ends of the line are identical, while they are opposite for an external fault. Through comparing the signs of the average values detected by two relays on both ends of the line, an internal fault can be distinguished from an external fault. Using PSCAD software, a 1000 kV transmission line model was constructed, and extensive simulations were performed. The simulation results indicate the validity and feasibility of the proposed protection method.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131478703","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}
With the development of UHVDC technology, the capacity of power transmission is getting increasingly bigger, which will generate a great impact on the receiving power system. This paper proposed a novel separating pole connection (SPC) mode to address this issue. Firstly, the paper introduced the configuration concept of SPC and presented the definition of short circuit ratio for separating pole connection mode (SPCSCR). And the abilities of power transmission related with SPCSCRs under different connection modes were analyzed. Secondly, the overall control strategies for UHVDC SPC mode were studied and suggested independent control systems for two poles respectively. Finally, the dynamic behavior of SPC mode was studied by a case of UHVDC transmission using PSCAD/EMTDC, and the results validated the advantages of this structure, which has great superiority in stable operation and flexible power transmission.
{"title":"Static and dynamic behavior studies for UHVDC separation pole connection to AC grid","authors":"Jing Wang, Minxiao Han, Shunjun Yao, Chunzheng Tian, Ruihua Si, Xiaojun Tang","doi":"10.1109/APPEEC.2016.7779651","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779651","url":null,"abstract":"With the development of UHVDC technology, the capacity of power transmission is getting increasingly bigger, which will generate a great impact on the receiving power system. This paper proposed a novel separating pole connection (SPC) mode to address this issue. Firstly, the paper introduced the configuration concept of SPC and presented the definition of short circuit ratio for separating pole connection mode (SPCSCR). And the abilities of power transmission related with SPCSCRs under different connection modes were analyzed. Secondly, the overall control strategies for UHVDC SPC mode were studied and suggested independent control systems for two poles respectively. Finally, the dynamic behavior of SPC mode was studied by a case of UHVDC transmission using PSCAD/EMTDC, and the results validated the advantages of this structure, which has great superiority in stable operation and flexible power transmission.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131547394","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779769
Z. Wei, Mengxia Wang, Xueshan Han, Haicheng Zhang, Qiang Zhang
Dynamic thermal rating (DTR) is an effective technique to improve the ampacity of overhead power transmission lines based on the monitoring of real-time environmental conditions. With DTR technology being introduced, the thermal rating of transmission line is no longer constant but time-dependent. To fully utilize the transfer capability of transmission lines, it is necessary to provide operators with probabilistic forecasting information of DTR to make dispatch decision. In this paper, a new probabilistic forecast method based on the quantile regression analysis theory is proposed to realize the probabilistic prediction of DTR. The weather parameters which have significant influence on the real-time ampacity and historical line ratings are embedded in the quantile regression prediction model. The proposed method can not only give the point prediction and interval prediction result, but also can provide the forecasting results of probability distribution function. Finally, the validity of the proposed method is illustrated by case studies.
{"title":"Probabilistic forecasting for the ampacity of overhead transmission lines using quantile regression method","authors":"Z. Wei, Mengxia Wang, Xueshan Han, Haicheng Zhang, Qiang Zhang","doi":"10.1109/APPEEC.2016.7779769","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779769","url":null,"abstract":"Dynamic thermal rating (DTR) is an effective technique to improve the ampacity of overhead power transmission lines based on the monitoring of real-time environmental conditions. With DTR technology being introduced, the thermal rating of transmission line is no longer constant but time-dependent. To fully utilize the transfer capability of transmission lines, it is necessary to provide operators with probabilistic forecasting information of DTR to make dispatch decision. In this paper, a new probabilistic forecast method based on the quantile regression analysis theory is proposed to realize the probabilistic prediction of DTR. The weather parameters which have significant influence on the real-time ampacity and historical line ratings are embedded in the quantile regression prediction model. The proposed method can not only give the point prediction and interval prediction result, but also can provide the forecasting results of probability distribution function. Finally, the validity of the proposed method is illustrated by case studies.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131632686","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779831
He Wang, Rukong Jin, J. Bian, Hongwei Zhou
A seamless switching control strategy for multi-terminal flexible HVDC system, presented in this paper, can maintain DC voltage of system stable and ensure a reasonable power allocation of converter stations. This strategy improves active channels of the outer loop, which enhances flexibility and selectivity of control by setting droop control mode cover fixed DC voltage control mode and constant active power control mode. Only by changing the control mode selection coefficients can realize switching of three kinds of control mode and self-switching of droop control mode, which reduces the fluctuation and shock generated by using the switching hardware and improves the transient stability of the system. Finally, a RT-lab simulation model of the five-terminal flexible HVDC transmission system is built to verify the effectiveness of the proposed control strategy, and the seamless switching among the control modes is realized.
{"title":"Research on seamless switching of DC voltage control methods of MTDC system","authors":"He Wang, Rukong Jin, J. Bian, Hongwei Zhou","doi":"10.1109/APPEEC.2016.7779831","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779831","url":null,"abstract":"A seamless switching control strategy for multi-terminal flexible HVDC system, presented in this paper, can maintain DC voltage of system stable and ensure a reasonable power allocation of converter stations. This strategy improves active channels of the outer loop, which enhances flexibility and selectivity of control by setting droop control mode cover fixed DC voltage control mode and constant active power control mode. Only by changing the control mode selection coefficients can realize switching of three kinds of control mode and self-switching of droop control mode, which reduces the fluctuation and shock generated by using the switching hardware and improves the transient stability of the system. Finally, a RT-lab simulation model of the five-terminal flexible HVDC transmission system is built to verify the effectiveness of the proposed control strategy, and the seamless switching among the control modes is realized.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"27 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132833006","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}
Reactive power optimization is generally used to design an optimal profile of voltage and reactive power of power systems in steady state for deterministic sets of demand load and generation values, and it is a significant procedure in voltage control. However, the input data of power system is actually uncertain in practice, which makes reactive power optimization an uncertain nonlinear programming, and it is not solved properly at present. To address this problem, the input data is considered as interval and reactive power optimization incorporating interval uncertainties is proposed to model this problem. In order to solve this model, genetic algorithm is employed as the solution algorithm, where reliable power flow calculation is used to judge the constraints of the model. The IEEE14 system is tested and analyzed to demonstrate the effectiveness of the proposed method, especially in comparison to previously proposed chance constrained programming.
{"title":"Solution of interval reactive power optimization using genetic algorithm","authors":"Cong Zhang, Haoyong Chen, Jia Lei, Zipeng Liang, Yiming Zhong","doi":"10.1109/APPEEC.2016.7779660","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779660","url":null,"abstract":"Reactive power optimization is generally used to design an optimal profile of voltage and reactive power of power systems in steady state for deterministic sets of demand load and generation values, and it is a significant procedure in voltage control. However, the input data of power system is actually uncertain in practice, which makes reactive power optimization an uncertain nonlinear programming, and it is not solved properly at present. To address this problem, the input data is considered as interval and reactive power optimization incorporating interval uncertainties is proposed to model this problem. In order to solve this model, genetic algorithm is employed as the solution algorithm, where reliable power flow calculation is used to judge the constraints of the model. The IEEE14 system is tested and analyzed to demonstrate the effectiveness of the proposed method, especially in comparison to previously proposed chance constrained programming.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"351 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132837290","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779760
Jie Zhang, L. Guan, Xiaogang Wang
The penetration of distributed generations (DGs) will grow gradually in future distribution system where islanded operation of microgrid (MG) helps to improve local and overall reliability. However, the microgrid load point outage time and outage frequency are affected directly by island load control strategy (load shedding and restoration strategy) which is not wholly considered in existing reliability evaluation methods. This paper proposes two improved strategies based on usual load control strategy considering fluctuation and correlation characteristics of renewable distributed generations power output and load demand. Applying sequential Monte Carlo simulation (SMCS) method,this paper analyzes the impacts of load control strategy on microgrid reliability quantitatively. Simulation results show that island load control strategy has important effect on microgrid reliability ,and the proposed strategies are more reasonable which can further improve microgrid reliability.
{"title":"Impacts of island load shedding and restoration strategies on reliability of microgrid in distribution system","authors":"Jie Zhang, L. Guan, Xiaogang Wang","doi":"10.1109/APPEEC.2016.7779760","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779760","url":null,"abstract":"The penetration of distributed generations (DGs) will grow gradually in future distribution system where islanded operation of microgrid (MG) helps to improve local and overall reliability. However, the microgrid load point outage time and outage frequency are affected directly by island load control strategy (load shedding and restoration strategy) which is not wholly considered in existing reliability evaluation methods. This paper proposes two improved strategies based on usual load control strategy considering fluctuation and correlation characteristics of renewable distributed generations power output and load demand. Applying sequential Monte Carlo simulation (SMCS) method,this paper analyzes the impacts of load control strategy on microgrid reliability quantitatively. Simulation results show that island load control strategy has important effect on microgrid reliability ,and the proposed strategies are more reasonable which can further improve microgrid reliability.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"215 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133963549","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779708
Senge Bai, Yongqing Meng, Bo Liu, Haitao Zhang, Haotian Ma
A novel three-phase series-connected modular multilevel converter in T configuration (TSC-MMC) for high voltage direct current transmission system is presented. The paper studies the dynamic mathematical model and the control scheme based on the proposed topology. Compared to conventional MMC, the number of IGBTs in TSC-MMC is reduced when withstanding the same dc voltage, which effectively decreases the system cost. Due to the series connection, no circulating currents exist in TSC-MMC. When the auxiliary arms on the dc side consist of full-bridge sub-modules (FBSMs), fault currents can be eliminated by blocking the cascaded FBSMs when dc fault occurs, without using circuit breakers. Moreover, an optimization of reactive power distribution between the main arms and the auxiliary arms is presented to improve the system performance. The simulation results obtained in MATLAB/Simulink are provided to verify the new topology as well as the proposed control strategies.
{"title":"Modeling and control of a novel three-phase series-connected modular multilevel converter in T configuration","authors":"Senge Bai, Yongqing Meng, Bo Liu, Haitao Zhang, Haotian Ma","doi":"10.1109/APPEEC.2016.7779708","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779708","url":null,"abstract":"A novel three-phase series-connected modular multilevel converter in T configuration (TSC-MMC) for high voltage direct current transmission system is presented. The paper studies the dynamic mathematical model and the control scheme based on the proposed topology. Compared to conventional MMC, the number of IGBTs in TSC-MMC is reduced when withstanding the same dc voltage, which effectively decreases the system cost. Due to the series connection, no circulating currents exist in TSC-MMC. When the auxiliary arms on the dc side consist of full-bridge sub-modules (FBSMs), fault currents can be eliminated by blocking the cascaded FBSMs when dc fault occurs, without using circuit breakers. Moreover, an optimization of reactive power distribution between the main arms and the auxiliary arms is presented to improve the system performance. The simulation results obtained in MATLAB/Simulink are provided to verify the new topology as well as the proposed control strategies.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132292621","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779488
Lijuan Li, Jun Wu, H. Bai, Zhengfen Gong, Biman Ma, Hongliang Liu
Ensuring the power supply of important special loads can effectively reduce the electric power losses resulted from disaster. A model and method of power grid differentiated planning are proposed for the consideration of special loads power supply under disaster. By introducing the probability of the electric power equipment damage in disaster, the power grid differentiated planning model on the basis of supplying power for the special loads is proposed which optimizes the outage losses and the added generation cost. Two different types of power supply for special loads are taken into account. The one ensures the full capacity of each special node, and the other ensures part capacity of the each special node because only part capacity of the node is urgent. The simulated results of IEEE 14-bus and IEEE 118-bus system demonstrate the rationality of the proposed model, which offers reference to the anti-disaster planning in power systems.
{"title":"Differentiated planning in disaster ensuring power supply for special loads","authors":"Lijuan Li, Jun Wu, H. Bai, Zhengfen Gong, Biman Ma, Hongliang Liu","doi":"10.1109/APPEEC.2016.7779488","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779488","url":null,"abstract":"Ensuring the power supply of important special loads can effectively reduce the electric power losses resulted from disaster. A model and method of power grid differentiated planning are proposed for the consideration of special loads power supply under disaster. By introducing the probability of the electric power equipment damage in disaster, the power grid differentiated planning model on the basis of supplying power for the special loads is proposed which optimizes the outage losses and the added generation cost. Two different types of power supply for special loads are taken into account. The one ensures the full capacity of each special node, and the other ensures part capacity of the each special node because only part capacity of the node is urgent. The simulated results of IEEE 14-bus and IEEE 118-bus system demonstrate the rationality of the proposed model, which offers reference to the anti-disaster planning in power systems.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115342634","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779739
Jun Zhang, Kejun Li, Mingqiang Wang
In this paper, the frequency and voltage control is studied for the operation of islanded microgrids considering response characteristics of the prime mover of microsources with electronically interfaced converters. The prime mover is modelled as a first-order lag transfer function with a proportional differential (PD) controller. The lag transfer function, where the value of time constant represents response speed, is used to describe dynamics of the prime mover. PD controller is used to regulate the DC bus voltage. The voltage source inverter (VSI) regulates the voltage magnitude and frequency with a proportional integral (PI) controller. Simulations are carried out to demonstrate dynamics of the prime mover and its impact on VSI operation. The results show that high response rate of compressed air energy storage (CAES) can help microgrids to achieve stable and secure operation.
{"title":"Voltage/frequency control of microsources considering response characteristics of prime mover","authors":"Jun Zhang, Kejun Li, Mingqiang Wang","doi":"10.1109/APPEEC.2016.7779739","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779739","url":null,"abstract":"In this paper, the frequency and voltage control is studied for the operation of islanded microgrids considering response characteristics of the prime mover of microsources with electronically interfaced converters. The prime mover is modelled as a first-order lag transfer function with a proportional differential (PD) controller. The lag transfer function, where the value of time constant represents response speed, is used to describe dynamics of the prime mover. PD controller is used to regulate the DC bus voltage. The voltage source inverter (VSI) regulates the voltage magnitude and frequency with a proportional integral (PI) controller. Simulations are carried out to demonstrate dynamics of the prime mover and its impact on VSI operation. The results show that high response rate of compressed air energy storage (CAES) can help microgrids to achieve stable and secure operation.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114656370","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 : 2016-10-01DOI: 10.1109/APPEEC.2016.7779787
Yanan Zheng, D. Ren, Zhaoguang Hu, Quan Wen, Mengyuan Ren
In China the low carbon electricity is one of the key issues of its sustainable development. Although the power structure adjustment and non-fossil energy development have great progress during the “12th Five Year Plan” period, there are still some outstanding problems about the coordinated development of fossil energy power generation and non-fossil energy power generation. So based on the analysis of China's current situation and future development trend of power supply and demand, this paper first builds the model of Integrated Resource Strategic Planning (IRSP) and then studies the development of fossil energy power generation and non-fossil energy power generation in China from 2016 to 2035; last combined the research results with the current situation, some relevant suggestions are put forward.
{"title":"Research on the development trend of fossil energy power generation and non-fossil energy power generation in China","authors":"Yanan Zheng, D. Ren, Zhaoguang Hu, Quan Wen, Mengyuan Ren","doi":"10.1109/APPEEC.2016.7779787","DOIUrl":"https://doi.org/10.1109/APPEEC.2016.7779787","url":null,"abstract":"In China the low carbon electricity is one of the key issues of its sustainable development. Although the power structure adjustment and non-fossil energy development have great progress during the “12th Five Year Plan” period, there are still some outstanding problems about the coordinated development of fossil energy power generation and non-fossil energy power generation. So based on the analysis of China's current situation and future development trend of power supply and demand, this paper first builds the model of Integrated Resource Strategic Planning (IRSP) and then studies the development of fossil energy power generation and non-fossil energy power generation in China from 2016 to 2035; last combined the research results with the current situation, some relevant suggestions are put forward.","PeriodicalId":117485,"journal":{"name":"2016 IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114706496","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}
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