Voltage Control Method for Active Distribution Networks Based on Regional Power Coordination

Jin-Xin Ou-Yang, Xiao-Xuan Long, Xue Du, Yan-Bo Diao and Meng-Yang Li
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Jin-Xin Ou-Yang: State Key Lab. Of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
Xiao-Xuan Long: State Key Lab. Of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
Xue Du: Guizhou Power Grid Co Ltd., Guiyang Power Supply Bur, Guiyang 550000, China
Yan-Bo Diao: Chongqing City Management College, Chongqing 401331, China
Meng-Yang Li: State Key Lab. Of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China

Energies, 2019, vol. 12, issue 22, 1-23

Abstract: As loads connected to active distribution network (ADN) grow, ADN’s voltage safety issues are becoming more serious. At present, the solution is mainly to build more distributed generation (DG) or to adjust the reactive power in the whole network, but the former needs a lot of investment while the latter requires a large amount of communication equipment and it takes a long time to calculate the adjustment amount of reactive power and to coordinate reactive power compensation equipment. When the loads are heavy, there will still be drawbacks of insufficient reactive power. Therefore, this paper analyzes the relationship between the active power, reactive power, and the voltage in the ADN. Through the autonomous region (AR) division, a voltage control method based on the active power variation and adjustable power in the AR is proposed. According to the relationship between the amount of active power and the adjustable amount active power, the active power control, the reactive power control, and the coordinated control of active power reactive power control are adopted to adjust the DGs’ output to stabilize the bus voltage. The simulation results show that the proposed method can effectively improve the voltage control capability of ADN and can enable it to operate normally under greater power changes. Through the control method in this paper, the communication requirements are greatly reduced and the calculation time is effectively shortened and is more adaptable.

Keywords: active distribution network; active power variation; voltage control; distributed generation; active and reactive power coordination (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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