Reactive power operability of distributed energy resources for voltage stability of distribution networks

doi:10.1007/s40565-018-0484-3

Home > Archive>Volume 7, Issue 4, 2019 >851-861. DOI:10.1007/s40565-018-0484-3

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Reactive power operability of distributed energy resources for voltage stability of distribution networks

DOI:

10.1007/s40565-018-0484-3

Author:

Shuai HU ^¹
Shuai HU
College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China
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Yue XIANG ^¹
Yue XIANG
College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China
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Xin ZHANG ^²
Xin ZHANG
Electricity National Control Centre, National Grid, Wokingham RG41 5BN, UK
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Junyong LIU ^¹
Junyong LIU
College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China
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Rui WANG ^{^1,2,3,4}
Rui WANG
1. College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China; 3. State Grid Shizuishan Power Supply Company, Shizuishan 753000, China;
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Bowen HONG ^⁴
Bowen HONG
State Grid Energy Research Institute, Beijing 102209, China
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Affiliation:

1. College of Electrical Engineering and Information Technology, Sichuan University, Chengdu 610065, China; 2. Electricity National Control Centre, National Grid, Wokingham RG41 5BN, UK; 3. State Grid Shizuishan Power Supply Company, Shizuishan 753000, China; 4. State Grid Energy Research Institute, Beijing 102209, China

Fund Project:

National Natural Science Foundation of China (No. 51807127), the Fundamental Research Funds for the Central Universities of China (YJ201654), and the Open Research Subject of Key Laboratory of Sichuan Power Electronics Energy-saving Technology and Devices (szjj2017-052).

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Abstract:

The penetration level of distributed energy resources (DERs) is increasing and has significant impact on the voltage stability of distribution networks. Based on the various types of DERs with distinct reactive power characteristics (RPC), their different contributions to the system voltage stability require classification. Firstly, the features of DERs are reviewed and classified based on their RPC, to investigate different distributed generation technologies for reactive power support in distribution networks. Then, the concept of a relative available transmission capacity index (RATCI), which is based on power transfer margin of the power-voltage curve considering the non-negligible distribution network resistance, is proposed to quantify and evaluate the voltage stability by integrating DERs with the defined reactive power types. Case studies have been conducted for an IEEE 33-bus distribution network to calculate the system RATCI for the mixed integration of DERs. Results show that the multi-type and multi-locational integration of DERs can improve the voltage stability of a distribution network.

Key words:Voltage stability, Distributed energy resources, Distribution networks, Relative available transmission capacity, Reactive power operability, Renewable energy integration

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Online: July 31,2019
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