倒送功率约束下的分布式电源最大接入容量分析

曾强; 谢善益; 周刚; 邓楚然; 彭泽武; 张子杰; 黎灿兵

引用本文:	曾强,谢善益,周刚,等.倒送功率约束下的分布式电源最大接入容量分析[J].电力系统保护与控制,2019,47(10):16-22.
	ZENG Qiang,XIE Shanyi,ZHOU Gang,et al.Maximum capacity analysis for distributed generation considering reverse power constraint[J].Power System Protection and Control,2019,47(10):16-22

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倒送功率约束下的分布式电源最大接入容量分析
曾强¹,谢善益²,周刚²,邓楚然³,彭泽武³,张子杰⁴,黎灿兵⁴
(1.广东电网有限责任公司，广东广州 510000;2.广东电网有限责任公司电力科学研究院，广东广州 510000; 3.广东电网有限责任公司信息中心，广东广州 510000;4.能源互联网智能信息分析与集成优化湖南省重点实验室，湖南长沙 410000)

摘要:

分布式电源(DG)接入配电网后，低电压等级电网可能倒送功率至高电压等级电网，对电网造成不利影响。在各种影响因素中，倒送功率限制是影响DG接入电网的主要因素。从倒送功率约束的角度出发，结合节点电压及潮流约束，建立了以DG接入容量最大为目标的数学模型，给出了最大接入容量的计算方法，并分析了DG的接入对配电网有功网损的影响。考虑节假日对负荷的影响，给出了调整倒送功率约束以增大DG接入容量的建议。以一个33节点的10 kV配电网接入分布式光伏电源为例，验证了所提方法的可行性。

关键词: 分布式电源倒送功率最大接入容量配电网

DOI：10.7667/PSPC20191003

分类号:

基金项目:国家自然科学基金项目(51722701);广东电网重点科技项目(039900KK52150001)

Maximum capacity analysis for distributed generation considering reverse power constraint

ZENG Qiang¹,XIE Shanyi²,ZHOU Gang²,DENG Churan³,PENG Zewu³,ZHANG Zijie⁴,LI Canbing⁴

(1. Guangdong Power Grid Limited Liability Company, Guangzhou 510000, China;2. Guangdong Power Grid Limited Liability Company Power Science Research Institute, Guangzhou 510000, China;3. Guangdong Power Grid Limited Liability Company Information Center, Guangzhou 510000, China;4. The Hunan Key Laboratory of Intelligent Information Analysis and Integrated Optimization for Energy Internet, Changsha 410000, China)

Abstract:

Distributed Generation (DG) access to distribution network the power may be transmitted from low-voltage power grid to high-voltage, causing adverse impacts on power grid. Among all kinds of factors, the power restriction is the main factor that affects the access of DG to distribution network. A mathematical model of maximum capacity of DG is built when reverse power node voltage and power flow constraint are considered and then the calculation method is introduced in this paper. It also analyzes the effect of DG on active power loss of distribution network. Considering the effect of holidays on power load, the proposal of adjusting reverse power constraint to increase DG capacity is given. The feasibility of the proposed method is proved by the example of distributed photovoltaic (PV) generation access to a 33-node 10 kV distribution network. This work is supported by National Natural Science Foundation of China (No.51722701) and Scientific and Technology Project of Guangdong Power Grid (No. 039900KK52150001).

Key words: distributed generation (DG) reverse power maximum capacity distribution network

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