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考虑可靠性收益的配电网智能软开关规划方法
作者:
作者单位:

1.智能电网教育部重点实验室,天津大学,天津市300072;2.广东电网有限责任公司佛山供电局,广东省佛山市528000;3.英国卡迪夫大学工程学院,卡迪夫 CF24 3AA,英国

作者简介:

赵金利(1979—),女,博士,副教授,主要研究方向:电力系统安全性与稳定性、智能配电网的运行与优化。E-mail:jlzhao@tju.edu.cn
陈昊(1994—),男,硕士研究生,主要研究方向:智能配电网可靠性。E-mail:chenhaotju@tju.edu.cn
宋关羽(1990—),男,通信作者,博士,工程师,主要研究方向:智能配电网运行优化与规划。E-mail:gysong@tju.edu.cn

通讯作者:

基金项目:

国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(U1866207);国家自然科学基金青年基金资助项目(51807132)。


Planning Method of Soft Open Point in Distribution Network Considering Reliability Benefits
Author:
Affiliation:

1.Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China;2.Foshan Power Supply Bureau of Guangdong Power Grid Co., Ltd, Foshan 528000, China;3.School of Engineering, Cardiff University, Cardiff CF24 3AA, UK

Fund Project:

This work is supported by National Natural Science Foundation of China-State Grid Joint Fund for Smart Grid (No. U1866207) and National Natural Science Foundation of China (No. 51807132).

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    摘要:

    智能软开关(SOP)具有较强的潮流控制能力,在配电网正常运行场景下和故障环境中均能有效发挥作用,在规划层面应兼顾其对于配电网供电可靠性与运行经济性提升所带来的综合收益。文中综合考虑了SOP接入对配电网供电可靠性和运行经济性的影响,建立了智能软开关规划模型;采用快速搜索和发现密度峰聚类方法对年负荷数据进行聚类,生成配电网典型运行场景以计算其对运行经济性的提升收益;采用基于关联约束的支路故障率计算方法,考虑线路电流负载率、节点电压以及线路长度对支路故障率的影响,生成动态预想故障集以计算供电可靠性收益;采用模拟退火与二阶锥规划相结合的混合算法对上述规划模型进行求解,最后,在PG&E 69节点算例上验证了所提规划模型的有效性。结果表明,面向配电网可靠性与经济性的SOP规划方法能够有效降低配电网综合成本,实现投资效益的最大化。

    Abstract:

    Soft open points (SOPs), which have powerful capability of power flow control, can make positive contribution under normal operation and fault conditions of distribution network. The benefits both from the improvement of power supply reliability and operation economy should be taken into account at the planning stage. Planning model of SOPs is proposed in this paper considering the effect of connecting SOP on supply reliability and operation economy in distribution network. The fast-search and the method of finding density peaks clustering are used to aggregate the annual load data, and the typical operation scenarios in distribution network are generated to calculate the improvement cost of operation economy. The calculation method of branch failure rate based on related constraints is adopted, considering the influences of load rate of line current, node voltage and length of line on branch failure rate, the dynamic prediction failure set is generated to calculate the benefits of power supply reliability. A hybrid optimization algorithm, which combines the simulated annealing method with the second-order cone programming, is used to solve the planning model mentioned above. Finally, the effectiveness of the proposed planning model is verified by the modified PG&E 69-node test system. The results show that the SOP planning method facing reliability and economy in distribution network can effectively reduce the comprehensive cost of distribution network and maximize the investment benefits.

    表 2 不含分布式电源的SOP规划方案Table 2 Planning schemes of SOP without distribution generator
    表 4 规划前后可靠性收益对比Table 4 Comparison of reliability profit before and after planning
    表 7 Table 7
    表 6 规划前后成本对比Table 6 Cost comparison before and after planning
    图1 SOP规划流程图Fig.1 Flow chart of SOP planning
    图2 PG&E 69节点算例Fig.2 Example of PG&E 69-node
    图3 CFSFDP方法生成的典型场景Fig.3 Typical scenarios generated by CFSFDP method
    图4 SOP规划结果与单位停电损失成本关系曲线Fig.4 Relationship curves of SOP planning results and unit power outage loss cost
    表 1 CFSFDP方法生成的典型场景概率Table 1 Probability of scenarios generated by CFSFDP method
    表 5 含分布式电源的SOP规划方案Table 5 Planning schemes of SOP with distribution generator
    表 3 规划前后综合成本对比Table 3 Comparison of integrated cost before and after planning
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引用本文

赵金利,陈昊,宋关羽,等.考虑可靠性收益的配电网智能软开关规划方法[J].电力系统自动化,2020,44(10):22-31. DOI:10.7500/AEPS20190715008.
ZHAO Jinli,CHEN Hao,SONG Guanyu,et al.Planning Method of Soft Open Point in Distribution Network Considering Reliability Benefits[J].Automation of Electric Power Systems,2020,44(10):22-31. DOI:10.7500/AEPS20190715008.

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  • 收稿日期:2019-07-15
  • 最后修改日期:2019-10-17
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  • 在线发布日期: 2020-05-22
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