考虑配电可靠性的分布式电源投资策略研究

合理的分布式电源选址定容可以有效地降低配电网的线路投资和损耗成本，提高含分布式发电的配网系统运行的安全性、可靠性和经济性。结合技术和经济指标，介绍了分布式电源投资的方法，考虑了最优电力潮流(optimal power flow，OPF)、停电成本期望和配电网可靠性，阐述了分布式发电对可靠性指标的影响，并以IEEE-RBTS BUS4的测试系统为例，对各个节点的停电成本、分布式发电容量与配电网可靠性及收益之间的关系进行模拟。研究结果表明，文章提出的分布式电源投资方法，可为投资者选取分布式电源规模和位置提供依据，降低配电网运营成本，提高配电网的供电可靠性。

Distributed Generation Investment Strategy Considering Distribution System Reliability

The line investment and loss cost of distribution network can be effectively reduced and the security, reliability and economy of distribution network system operation can be improved with reasonable locating and sizing distributed power. Considering the optimal power flow (OPF), the expectation of interruption cost and the reliability of distribution network, we introduce the investment method of distributed power with the combination of technical and economic indicators, and discuss the effect of distributed generation on the reliability index. Then, we simulate the relationship between the interruption cost of each node, distributed generation capacity, distribution network reliability and revenue with taking an IEEE-RBTS BUS4 test system as example. The research results show that the proposed investment method of distributed generation can provide the basis for investors to select the size and location of distributed generation, reduce the operating cost of distribution network and improve its power supply reliability.