基于二阶锥规划的计及多种快速控制手段的综合安全校正策略

doi:10.19595/j.cnki.1000-6753.tces.181631

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摘要随着高比例新能源的接入以及电力市场的发展,电网运行方式更加多变,依靠传统离线方法针对典型方式制定的安全校正方案可能过于保守,因此有必要根据当前运行方式在线刷新获得控制量精准的安全校正方案以减小控制代价。此外,传统的校正手段较单一,未考虑如传输线切换（TS）、可控串联补偿器（TCSC）控制、多端直流（MTDC）功率调制等快速响应手段,以避免校正过程中潮流进一步转移。计及上述三种快速响应的校正手段,提出基于二阶锥规划的综合安全校正策略,以根据当前运行方式快速获得准确且切负荷量少的安全校正方案。具体地,为保证校正方案的准确性,基于混合整数二阶锥规划构建含TCSC、MTDC且拓扑可变的电网潮流模型,并据此构建相应的综合安全校正优化模型。为保证求解的快速性,提出启发式双重加速求解策略。首先,提出基于支路开断综合影响指标的启发式选线策略,降低搜索空间维度;然后,基于所提指标提出诱导目标函数的加速求解策略,在保证准确性的前提下进一步提高计算效率;最后,基于改造的IEEE 57节点算例,验证了所提安全校正策略的有效性和准确性,以及在少切负荷和高求解效率方面的优越性。

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关键词 ：安全校正, 二阶锥规划, 联锁故障, 传输线切换

Abstract：High proportion of renewable energy sources and power market makes the operation state more variable, so the security correction schemes(SCS) for typical operation mode made offline may be conservative. In addition, in traditional SCS, fast control measures are not considered to avoid further overload during the control process, such as transmission switching(TS), thyristor controlled series compensator(TCSC) control, or multi-terminal direct current(MTDC) power modulation. Thus, a comprehensive security correction(SC) strategy considering the above three fast control measures is proposed based on second-order cone programming (SOCP) to quickly obtain accurate SCS according to current operation mode. Specifically, to ensure the accuracy of SCS, the power flow model with changeable topologically, TCSC and MTDC is constructed based on mixed integer SOCP, and the corresponding SC optimization model is constructed. To ensure the rapidity of solution, a heuristic double acceleration strategy is proposed. Firstly, a heuristic line selection strategy based on the comprehensive influence index of line outage is proposed, thus to reduce the search space. Then, based on the proposed index, an accelerating strategy to induce the objective function is proposed, which further improves the computational efficiency while also guarantee accuracy. Based on the modified IEEE 57 bus system, the effectiveness and accuracy of the proposed SC strategy and its superiority in terms of less load shedding and high solution efficiency are verified.

Key words： Security correction second-order cone programming cascading failure transmission switching

收稿日期: 2018-10-10 出版日期: 2020-01-17

PACS:

TM73

基金资助:国家重点研发计划（2017YFB0902600）和国家电网公司科技项目（SGJS0000DKJS1700840）资助

通讯作者: 林涛男,1969年生,教授,博士生导师,研究方向为电力系统运行与控制、电力系统继电保护、新能源发电与智能电网、电能质量分析与控制。E-mail：tlin@whu.edu.cn

作者简介: 毕如玉女,1991年生,博士研究生,研究方向为电力系统运行与控制。E-mail：biruyu@sina.com

引用本文:

林涛, 毕如玉, 陈汝斯, 周学明, 徐遐龄. 基于二阶锥规划的计及多种快速控制手段的综合安全校正策略[J]. 电工技术学报, 2020, 35(1): 167-178. Lin Tao, Bi Ruyu, Chen Rusi, Zhou Xueming, Xu Xialing. Comprehensive Security Correction Strategy Based on Second-Order Cone Programming Considering Multiple Fast Control Measures. Transactions of China Electrotechnical Society, 2020, 35(1): 167-178.

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