发电技术 ›› 2023, Vol. 44 ›› Issue (2): 270-279.DOI: 10.12096/j.2096-4528.pgt.22157

• 智能电网 • 上一篇    下一篇

西北电网集中式调相机AVC综合协调控制策略

肖洋1, 李志强1, 程林2, 汤磊3, 夏潮1, 梁英4, 宋锐4, 王东阳1, 李贺文1   

  1. 1.中国电力科学研究院有限公司, 北京市 海淀区 100192
    2.国电电网公司西北分部, 陕西省 西安市 710048
    3.北京清大高科系统控制有限公司, 北京市 海淀区 102208
    4.国网青海省电力公司, 青海省 西宁市 810003
  • 收稿日期:2022-09-19 出版日期:2023-04-30 发布日期:2023-04-28
  • 作者简介:肖洋(1977),男,硕士,教授级高级工程师,研究方向为电力系统网源协调和仿真建模,xy_eagle@163.com
  • 基金资助:
    国网青海省电力公司揭榜挂帅项目(52280720003R)

AVC Comprehensive Coordinated Control Strategy of Centralized Condenser in Northwest Power Grid

Yang XIAO1, Zhiqiang LI1, Lin CHENG2, Lei TANG3, Chao XIA1, Ying LIANG4, Rui SONG4, Dongyang WANG1, Hewen LI1   

  1. 1.China Electric Power Research Institute, Haidian District, Beijing 100192, China
    2.Northwest Division of State Grid Corporation of China, Xi’an 710048, Shaanxi Province, China
    3.Beijing KingStar High-tech System Control Co. , Ltd. , Haidian District, Beijing 102208, China
    4.State Grid Qinghai Electric Power Company, Xining 810003, Qinghai Province, China
  • Received:2022-09-19 Published:2023-04-30 Online:2023-04-28
  • Supported by:
    Unveiling Top Projects of State Grid Qinghai Electric Power Company(52280720003R)

摘要:

为实现西北电网高比例新能源地区的无功优化控制,提出了一种高压直流换流站集中式调相机参与电网自动电压控制(automatic voltage control,AVC)的综合协调控制策略。首先分析了AVC的总体控制思路,按“软分区”思想构造了三级电压控制模式。针对西北电网和青海电网实际,在网省系统之间建立协调控制变量,结合最优潮流模型,形成了柴达木调相机参与AVC的综合协调控制策略。通过柴达木调相机AVC联调试验时偶遇的电网大扰动实例,验证了控制策略的良好适用性。所提出的AVC控制策略,可使调相机在电网稳态时发挥无功源作用,电网故障时提供瞬时强无功支撑,充分利用新一代调相机性能,提高电网无功电压调节水平。

关键词: 电力系统, 调相机, 自动电压控制, 无功置换, 高比例新能源

Abstract:

This paper presented a comprehensive coordinated control strategy of centralized condenser in high-voltage DC converter station which participated in automatic voltage control (AVC) to perform the reactive power optimization in high proportion new energy areas of Northwest Power Grid. Firstly, the general control idea of AVC was analyzed, and the three-level voltage control mode based on “soft partition” was given. According to the actual situation of Northwest power grid and Qinghai power grid, the coordinated control variables between them were established. Combined with the optimal power flow model, the comprehensive coordinated control strategy of Qaidam condenser participating in AVC was formed. The good applicability of the control strategy was demonstrated by the example of power grid large disturbance encountered during the AVC joint commissioning test of Qaidam condenser. The presented strategy enhances the condenser’s reactive power source effect in the case of steady-state operation. Meanwhile, it ensures instantaneous strong reactive power support capability in the case of power grid fault. As a result, the strategy gives full play to the performance of the condenser, and improves the level of reactive power and voltage regulation of power grid.

Key words: electric system, condenser, automatic voltage control (AVC), reactive power replacement, high proportion new energy

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