基于内点法和邻域搜索解耦动态规划法的区域电网动态无功优化方法

doi:10.11930/j.issn.1004-9649.202107042

中国电力 ›› 2023, Vol. 56 ›› Issue (2): 59-67.DOI: 10.11930/j.issn.1004-9649.202107042

基于内点法和邻域搜索解耦动态规划法的区域电网动态无功优化方法

张杰¹, 王恒凤², 刘生春³, 王华彪⁴, 王沧海⁵, 冉垚⁶, 王献敏⁷, 马勇飞¹, 颜伟²

1. 国网青海省电力公司电力科学研究院，青海西宁　810001;
2. 输配电装备及系统安全与新技术国家重点实验室（重庆大学），重庆　400044;
3. 青海德泓电力科技有限公司，青海西宁　810001;
4. 重庆电力高等专科学校，重庆　400053;
5. 四川广安发电有限责任公司，四川广安　638500;
6. 广东东研网络科技股份有限公司，广东深圳　518057;
7. 国网青海省电力公司检修公司，青海，西宁　810000

收稿日期:2021-07-21 修回日期:2022-12-26 出版日期:2023-02-28 发布日期:2023-02-23
作者简介:张杰（1982—），女，硕士，高级工程师，从事电力系统分析研究，E-mail：71226923@qq.com;王恒凤（1999—），男，通信作者，硕士研究生，从事电力系统优化运行研究，E-mail：939304279@qq.com;颜伟（1968—），男，博士，教授，从事电力系统优化运行与控制、风险评估研究，E-mail：cquyanwei@cqu.edu.cn
基金资助:
国家自然科学基金资助项目（51677012）。

Algorithm for Dynamic Reactive Power Optimization of Regional Power Grid Based on Interior Point Method and Neighborhood Search Decoupling Dynamic Programming Method

ZHANG Jie¹, WANG Hengfeng², LIU Shengchun³, WANG Huabiao⁴, WANG Canghai⁵, RAN Yao⁶, WANG Xianmin⁷, MA Yongfei¹, YAN Wei²

1. Electric Power Research Institute, Qinghai Power Grid Co., Ltd, Xining 810001, China;
2. State Key Laboratory of Power Transmission Equipment & System Security and New Technology (Chongqing University), Chongqing 400044, China;
3. Qinghai Dehong Electric Power Technology Co., Ltd., Xining 810001, China;
4. Chongqing Electric Power College, Chongqing 400053, China;
5. Sichuan Guang’an Power Generation Co., Ltd, Guang’an 638500, China;
6. Guangdong Dongyan Network Technology Co., Ltd, Shenzhen 518057, China;
7. State Grid Qinghai Electric Power Company Maintenance Company, Xining 810000, China

Received:2021-07-21 Revised:2022-12-26 Online:2023-02-28 Published:2023-02-23
Supported by:
This work is supported by National Natural Science Foundation of China (No.51677012).

摘要/Abstract

摘要： 动态规划法可高效、准确求解小规模区域电网动态无功优化问题，但随着电网规模的增大，存在组合爆炸而导致求解时间急剧增长的问题。为此，提出了基于内点法和邻域搜索解耦动态规划法的区域电网动态无功优化两阶段混合方法。第1阶段，采用Sigmoid函数实现原模型的连续化，然后采用内点法求连续最优解；第2阶段，在连续解基础上，采用启发式邻域搜索策略确定解耦动态规划法搜索空间，通过站间解耦、调压和无功补偿设备的解耦协调以及站内的动态规划求解区域电网动态无功优化问题。该两阶段方法既保证了优化解的质量又可以有效避免离散变量求解状态组合爆炸问题，大幅度提高了动态规划法的计算效率。以某220 kV控制分区的仿真分析，验证了所提方法的有效性。

关键词: 内点法, 变电站间解耦, 设备类型解耦, 动态规划法, 区域电网

Abstract: The dynamic programming method can efficiently and accurately solve the dynamic reactive power optimization problem of the small-scale regional power grid. However, with the power grid scale increment, the optimization problem would have the combination explosion issue, which would lead to the rapid growth of solution time. Therefore, a two-stage hybrid dynamic reactive power optimization method based on the interior point method and the neighborhood search decoupling dynamic programming method is proposed. In the first stage, Sigmoid function is used to achieve the continuity of the original model, and then the interior point method is adopted to find the continuous optimal solution; while in the second stage, on the basis of the continuous solution, the heuristic neighborhood search strategy is employed to determine the search space of the decoupling dynamic programming method. The regional power grid dynamic reactive power optimization problem is solved through the decoupling between stations, the decoupled coordination of voltage regulation and reactive power compensation equipment, and the dynamic programming within the stations. The two-stage method could not only ensure the quality of the optimal solution, but also avoid solving the state combination explosion problem with discrete variables, which greatly improves the computational efficiency. The effectiveness of the proposed method is verified by the simulations on a 220 kV control zone.

Key words: interior point method, decoupling between substations, equipment decoupling, dynamic programming method, regional power grid

张杰, 王恒凤, 刘生春, 王华彪, 王沧海, 冉垚, 王献敏, 马勇飞, 颜伟. 基于内点法和邻域搜索解耦动态规划法的区域电网动态无功优化方法[J]. 中国电力, 2023, 56(2): 59-67.

ZHANG Jie, WANG Hengfeng, LIU Shengchun, WANG Huabiao, WANG Canghai, RAN Yao, WANG Xianmin, MA Yongfei, YAN Wei. Algorithm for Dynamic Reactive Power Optimization of Regional Power Grid Based on Interior Point Method and Neighborhood Search Decoupling Dynamic Programming Method[J]. Electric Power, 2023, 56(2): 59-67.

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基于内点法和邻域搜索解耦动态规划法的区域电网动态无功优化方法

Algorithm for Dynamic Reactive Power Optimization of Regional Power Grid Based on Interior Point Method and Neighborhood Search Decoupling Dynamic Programming Method

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基于内点法和邻域搜索解耦动态规划法的区域电网动态无功优化方法

Algorithm for Dynamic Reactive Power Optimization of Regional Power Grid Based on Interior Point Method and Neighborhood Search Decoupling Dynamic Programming Method

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