Pub Date : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638860
M. Stifter, J. Kathan
This paper presents measures to integrate a city district with a high share of building integrated photovoltaic systems into the electric grid. Achieving a 100% and higher total coverage of the city district's demand over a year imposes severe stress to the distribution grid supplying this area. The analysis of the coverage between photovoltaic (PV) generation and demand, based on real and synthetic profiles brings up the limiting factors of such a high share and density of photovoltaic generation. Different methods for improved integration — by increasing the direct use of the local generation — have been modeled and investigated. These are: the adaption of the generation profile, changing the shape of the demand due to the mixture of the usage of the building, and applying electrical storage. While the impacts of these different measures have been quantified, most flexibility has been introduced by the use of distributed energy storages.
{"title":"SunPowerCity — Innovative measures to increase the demand coverage with photovoltaics","authors":"M. Stifter, J. Kathan","doi":"10.1109/ISGTEUROPE.2010.5638860","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638860","url":null,"abstract":"This paper presents measures to integrate a city district with a high share of building integrated photovoltaic systems into the electric grid. Achieving a 100% and higher total coverage of the city district's demand over a year imposes severe stress to the distribution grid supplying this area. The analysis of the coverage between photovoltaic (PV) generation and demand, based on real and synthetic profiles brings up the limiting factors of such a high share and density of photovoltaic generation. Different methods for improved integration — by increasing the direct use of the local generation — have been modeled and investigated. These are: the adaption of the generation profile, changing the shape of the demand due to the mixture of the usage of the building, and applying electrical storage. While the impacts of these different measures have been quantified, most flexibility has been introduced by the use of distributed energy storages.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123235786","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638869
P. V. D. Wielen, E. Steennis
A new technology for smartening existing cable connections by means of implementing an intelligent heath monitoring system is described. The system is called PD-OL and monitors the condition of power cable connections continuously by means of partial discharge detection and location while the cable connection remains in-service. The system (called PD-OL) is able to locate the origin(s) of PDs from a complete cable connection by using only two inductive sensors, each at one cable termination. Data is measured continuously and measurement results are collected in a centralized Control Center, in which the results are analyzed and interpreted. The paper describes the system and gives field results. The effectiveness in which the system was able to detect weak spots shows to be over 80%. This means the system can help significantly to prevent outages, have continuous insight in risks and determine optimal replacement moments. Thereby intelligence is brought to cable connections.
{"title":"Smartening cable connections by an intelligent health monitor system","authors":"P. V. D. Wielen, E. Steennis","doi":"10.1109/ISGTEUROPE.2010.5638869","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638869","url":null,"abstract":"A new technology for smartening existing cable connections by means of implementing an intelligent heath monitoring system is described. The system is called PD-OL and monitors the condition of power cable connections continuously by means of partial discharge detection and location while the cable connection remains in-service. The system (called PD-OL) is able to locate the origin(s) of PDs from a complete cable connection by using only two inductive sensors, each at one cable termination. Data is measured continuously and measurement results are collected in a centralized Control Center, in which the results are analyzed and interpreted. The paper describes the system and gives field results. The effectiveness in which the system was able to detect weak spots shows to be over 80%. This means the system can help significantly to prevent outages, have continuous insight in risks and determine optimal replacement moments. Thereby intelligence is brought to cable connections.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123621340","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638859
Harjeet Johal, W. Ren, Yan Pan, M. Krok
Electric distribution grid is operated under a number of constraints in order to deliver power at a certain quality and reliability level. Electrical devices, such as capacitor banks, voltage regulators, and load tap changers are employed by the utilities to facilitate and support the operation of the distribution grid, while respecting many constraints, such as maintaining an acceptable band of voltage magnitude and a certain level of power factor. Traditionally, these devices are operated under fixed schedules, based on time of day or some other local parameters, and their operations are disjointed from one another, resulting in a decreased overall effectiveness of operation. This paper presents an approach to realize an integrated control and operation of these devices that will enable a more optimal operation of the grid. Simulation studies are performed on the IEEE test feeder network and the results highlight increased efficiency of grid operation in terms of decreased line losses, increased power factor, and improved voltage profile.
{"title":"An integrated approach for controlling and optimizing the operation of a power distribution system","authors":"Harjeet Johal, W. Ren, Yan Pan, M. Krok","doi":"10.1109/ISGTEUROPE.2010.5638859","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638859","url":null,"abstract":"Electric distribution grid is operated under a number of constraints in order to deliver power at a certain quality and reliability level. Electrical devices, such as capacitor banks, voltage regulators, and load tap changers are employed by the utilities to facilitate and support the operation of the distribution grid, while respecting many constraints, such as maintaining an acceptable band of voltage magnitude and a certain level of power factor. Traditionally, these devices are operated under fixed schedules, based on time of day or some other local parameters, and their operations are disjointed from one another, resulting in a decreased overall effectiveness of operation. This paper presents an approach to realize an integrated control and operation of these devices that will enable a more optimal operation of the grid. Simulation studies are performed on the IEEE test feeder network and the results highlight increased efficiency of grid operation in terms of decreased line losses, increased power factor, and improved voltage profile.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123626221","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638861
N. A. Kulatunga, Roman Loetscher, S. Kuruppu
Time of day electric utility rates (TOU) are unavoidable. Consumers have no idea how TOU rates will impact their energy bills. Studies have shown that TOU accompanies by real-time feedback help reducing energy consumption and shifting loads to off-peak hours. Soon, smart meters with wireless communication capabilities will be in every household. Using the capabilities of smart meters, detailed usage of appliances can be provided to consumers via web applications. By allowing consumers to apply and test the impact of different rates, effectiveness of feedback based DSM can be enhances. Features and capabilities of web application are presented with a real world example.
{"title":"Smart meter based tools to enhance feedback oriented DSM with time of use rates","authors":"N. A. Kulatunga, Roman Loetscher, S. Kuruppu","doi":"10.1109/ISGTEUROPE.2010.5638861","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638861","url":null,"abstract":"Time of day electric utility rates (TOU) are unavoidable. Consumers have no idea how TOU rates will impact their energy bills. Studies have shown that TOU accompanies by real-time feedback help reducing energy consumption and shifting loads to off-peak hours. Soon, smart meters with wireless communication capabilities will be in every household. Using the capabilities of smart meters, detailed usage of appliances can be provided to consumers via web applications. By allowing consumers to apply and test the impact of different rates, effectiveness of feedback based DSM can be enhances. Features and capabilities of web application are presented with a real world example.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123151953","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638854
D. Rua, D. Issicaba, F. Soares, P. Almeida, R. Rei, J. Lopes
The Smart Grid vision along with the future deployment of Electric Vehicles presents numerous challenges in terms of grid infrastructure, communication, and control. In this context, Advanced Metering Infrastructure solutions are envisioned to be the active management link between utilities and consumers. This paper presents a survey of potential AMI functionalities particularly developed to foster the large scale deployment of EV in Smart Grids. For this accomplishment, the concepts of Automated Meter Reading, Automatic Meter Management and Smart Metering are revisited. Furthermore, different EV charging approaches are outlined and included in the functionalities under the Vehicle-To-Grid framework. Finally, AMI use cases are described under the Vehicle-to-Home perspective.
{"title":"Advanced Metering Infrastructure functionalities for electric mobility","authors":"D. Rua, D. Issicaba, F. Soares, P. Almeida, R. Rei, J. Lopes","doi":"10.1109/ISGTEUROPE.2010.5638854","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638854","url":null,"abstract":"The Smart Grid vision along with the future deployment of Electric Vehicles presents numerous challenges in terms of grid infrastructure, communication, and control. In this context, Advanced Metering Infrastructure solutions are envisioned to be the active management link between utilities and consumers. This paper presents a survey of potential AMI functionalities particularly developed to foster the large scale deployment of EV in Smart Grids. For this accomplishment, the concepts of Automated Meter Reading, Automatic Meter Management and Smart Metering are revisited. Furthermore, different EV charging approaches are outlined and included in the functionalities under the Vehicle-To-Grid framework. Finally, AMI use cases are described under the Vehicle-to-Home perspective.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121237364","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638917
N. C. Woolley, J. Milanović
Unbalance is a damaging and costly phenomenon for both network operators and end users. Network operators are increasingly looking at ways in which they can intelligently monitor their exposure to unbalance and its related problems. This paper presents initial results obtained with a new methodology for estimation of the voltage unbalance factor at any busbar in a distribution network. The proposed methodology utilizes distribution system state estimation to estimate the statistical properties of voltage unbalance factor. Both real and pseudo measurements are used to estimate the voltage unbalance factor and the corresponding error in the estimate. The methodology is validated, at this stage, on a simple generic unevenly loaded power system network using real data from UK distribution networks. It is shown to yield promising results across a series of unbalance simulations.
{"title":"Estimating the voltage unbalance factor using distribution system state estimation","authors":"N. C. Woolley, J. Milanović","doi":"10.1109/ISGTEUROPE.2010.5638917","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638917","url":null,"abstract":"Unbalance is a damaging and costly phenomenon for both network operators and end users. Network operators are increasingly looking at ways in which they can intelligently monitor their exposure to unbalance and its related problems. This paper presents initial results obtained with a new methodology for estimation of the voltage unbalance factor at any busbar in a distribution network. The proposed methodology utilizes distribution system state estimation to estimate the statistical properties of voltage unbalance factor. Both real and pseudo measurements are used to estimate the voltage unbalance factor and the corresponding error in the estimate. The methodology is validated, at this stage, on a simple generic unevenly loaded power system network using real data from UK distribution networks. It is shown to yield promising results across a series of unbalance simulations.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124986448","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638904
J. D. Haan, J. Frunt, W. Kling
Future's penetration of more distributed generation will have an effect on the power system's stability and controllability. In general, wind power as a distributed generator does not have inertial response and does not supply control power. A third characteristic of wind power is that it is not conventionally controlled and its main resource is fluctuating. This paper describes a methodology to calculate wind power fluctuations in the frequency domain to compare it with load fluctuations for higher frequency power fluctuations. In relation, the approach of wind power smoothing is mentioned to mitigate the grid impact of power fluctuations. To smooth power, the concept of inertial wind power smoothing is briefly discussed for the low wind speed range of wind turbines, between the cut-in and rated wind speed. A smart grid could be equipped with a control system to control the power output of wind turbines and wind farms to mitigate the grid impact of wind power fluctuations on the frequency stability of a power system.
{"title":"Mitigation of wind power fluctuations in smart grids","authors":"J. D. Haan, J. Frunt, W. Kling","doi":"10.1109/ISGTEUROPE.2010.5638904","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638904","url":null,"abstract":"Future's penetration of more distributed generation will have an effect on the power system's stability and controllability. In general, wind power as a distributed generator does not have inertial response and does not supply control power. A third characteristic of wind power is that it is not conventionally controlled and its main resource is fluctuating. This paper describes a methodology to calculate wind power fluctuations in the frequency domain to compare it with load fluctuations for higher frequency power fluctuations. In relation, the approach of wind power smoothing is mentioned to mitigate the grid impact of power fluctuations. To smooth power, the concept of inertial wind power smoothing is briefly discussed for the low wind speed range of wind turbines, between the cut-in and rated wind speed. A smart grid could be equipped with a control system to control the power output of wind turbines and wind farms to mitigate the grid impact of wind power fluctuations on the frequency stability of a power system.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128355717","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638915
J. F. Baalbergen, M. Gibescu, L. V. D. Sluis
Many decentralized generation technologies are mature today. For the Dutch power system it is expected that in 2020 Decentralized Generators (DGs) form a major (about 35 %) part of the total production capacity. This expectation is true all over the world. A large share of DG will influence the voltage stability of the system. The objective of this paper is to give a clear overview of the consequences of DGs for typical voltage stability problems encountered at transmission level. No particular DG will be studied, but an overview will be given what happens if a DG is based on a certain generator type. Based on theoretical expectations the simulations done in this study show for a typical transmission system that adding DG is generally beneficial for the voltage stability. Mainly three factors are important for the consequence DG has on voltage stability: active power support, reactive power consumption, and voltage support. Taking these benefits into account requires intelligent control of the DGs.
{"title":"Voltage stability consequences of decentralized generation and possibilities for intelligent control","authors":"J. F. Baalbergen, M. Gibescu, L. V. D. Sluis","doi":"10.1109/ISGTEUROPE.2010.5638915","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638915","url":null,"abstract":"Many decentralized generation technologies are mature today. For the Dutch power system it is expected that in 2020 Decentralized Generators (DGs) form a major (about 35 %) part of the total production capacity. This expectation is true all over the world. A large share of DG will influence the voltage stability of the system. The objective of this paper is to give a clear overview of the consequences of DGs for typical voltage stability problems encountered at transmission level. No particular DG will be studied, but an overview will be given what happens if a DG is based on a certain generator type. Based on theoretical expectations the simulations done in this study show for a typical transmission system that adding DG is generally beneficial for the voltage stability. Mainly three factors are important for the consequence DG has on voltage stability: active power support, reactive power consumption, and voltage support. Taking these benefits into account requires intelligent control of the DGs.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125802735","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638979
S. Deilami, A. S. Masoum, P. Moses, M. Masoum
This paper analyzes the potential impacts of Plug-in Electric Vehicles (PEVs) on the voltage profile, losses, power quality and daily load curve of low voltage residential network. PEVs are soon expected to grow in popularity as a low emission mode of transport compared to conventional petroleum based vehicles. Utilities are concerned about the potential detrimental impacts that multiple domestic PEV charging may have on network equipment (e.g., transformer and cable stresses). To address these issues, two charging regimes including uncoordinated (random) and coordinated (uniformly distribution) are considered. Based on harmonic analysis of a typical 19 bus low voltage (415V) residential network, different charging scenarios over a 24 hour period are compared considering voltage deviations, system losses, transformer overloading and harmonic distortions. Simulation results are used to highlight the advantages of the coordinated uniformly distributed charging of PEV in residential systems.
{"title":"Voltage profile and THD distortion of residential network with high penetration of Plug-in Electrical Vehicles","authors":"S. Deilami, A. S. Masoum, P. Moses, M. Masoum","doi":"10.1109/ISGTEUROPE.2010.5638979","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638979","url":null,"abstract":"This paper analyzes the potential impacts of Plug-in Electric Vehicles (PEVs) on the voltage profile, losses, power quality and daily load curve of low voltage residential network. PEVs are soon expected to grow in popularity as a low emission mode of transport compared to conventional petroleum based vehicles. Utilities are concerned about the potential detrimental impacts that multiple domestic PEV charging may have on network equipment (e.g., transformer and cable stresses). To address these issues, two charging regimes including uncoordinated (random) and coordinated (uniformly distribution) are considered. Based on harmonic analysis of a typical 19 bus low voltage (415V) residential network, different charging scenarios over a 24 hour period are compared considering voltage deviations, system losses, transformer overloading and harmonic distortions. Simulation results are used to highlight the advantages of the coordinated uniformly distributed charging of PEV in residential systems.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127295278","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 : 2010-11-18DOI: 10.1109/ISGTEUROPE.2010.5638977
I. Leisse, O. Samuelsson, J. Svensson
During the last years the amount of electricity generated by Distributed Energy Resources (DER), especially wind turbines, has been increasing a lot. These Distributed Generation (DG) units are often connected to rural distribution networks, where they have a large impact on the voltage and the network losses. The network voltage at the customers point of connection is an important quality criteria and has to follow different standards as e.g. EN 50160. Therefore the voltage change caused by the integration of production units in the distribution network is an important aspect when integrating more DG in distribution networks and often a limiting factor for the maximum DG capacity which is possible to integrate into an existing network without reinforcement. Using the available voltage band more efficient by applying coordinated voltage control is a possibility to increase the hosted DG capacity in an existing distribution network without reinforcement of the network. To get the actual network status the new generation of electricity meters, which have the feasibility to communicate real time voltage measurements from the customers side to a network controller, give some benefits to a more flexible and coordinated voltage control in the network. The voltage range in the network will be used adapted to the actual load and generation situation instead of using worst case assumptions as it is good practice until now. A main part of the voltage control in medium voltage distribution networks is done by the on-load tap changer (OLTC) which takes the voltage at the consumers point of connection into account. A generic 10 kV distribution network with three typical types of feeders, as pure load, pure generation and mixed load and generation feeder, has been outlined. Coordinated voltage control is implemented by a central voltage controller. Simulations on the voltage and the network losses have been done and will be presented in this paper. The maximum DG capacity in the test system increases most when introducing coordinated control of the OLTC but also the use of reactive power adds some benefit. Further increase of the DG capacity by more extensive use of curtailment is always possible but due to economical aspects not favoured.
{"title":"Electricity meters for coordinated voltage control in medium voltage networks with wind power","authors":"I. Leisse, O. Samuelsson, J. Svensson","doi":"10.1109/ISGTEUROPE.2010.5638977","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2010.5638977","url":null,"abstract":"During the last years the amount of electricity generated by Distributed Energy Resources (DER), especially wind turbines, has been increasing a lot. These Distributed Generation (DG) units are often connected to rural distribution networks, where they have a large impact on the voltage and the network losses. The network voltage at the customers point of connection is an important quality criteria and has to follow different standards as e.g. EN 50160. Therefore the voltage change caused by the integration of production units in the distribution network is an important aspect when integrating more DG in distribution networks and often a limiting factor for the maximum DG capacity which is possible to integrate into an existing network without reinforcement. Using the available voltage band more efficient by applying coordinated voltage control is a possibility to increase the hosted DG capacity in an existing distribution network without reinforcement of the network. To get the actual network status the new generation of electricity meters, which have the feasibility to communicate real time voltage measurements from the customers side to a network controller, give some benefits to a more flexible and coordinated voltage control in the network. The voltage range in the network will be used adapted to the actual load and generation situation instead of using worst case assumptions as it is good practice until now. A main part of the voltage control in medium voltage distribution networks is done by the on-load tap changer (OLTC) which takes the voltage at the consumers point of connection into account. A generic 10 kV distribution network with three typical types of feeders, as pure load, pure generation and mixed load and generation feeder, has been outlined. Coordinated voltage control is implemented by a central voltage controller. Simulations on the voltage and the network losses have been done and will be presented in this paper. The maximum DG capacity in the test system increases most when introducing coordinated control of the OLTC but also the use of reactive power adds some benefit. Further increase of the DG capacity by more extensive use of curtailment is always possible but due to economical aspects not favoured.","PeriodicalId":267185,"journal":{"name":"2010 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127465066","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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