西北电网集中式调相机AVC综合协调控制策略
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。
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.
标题：西北电网集中式调相机AVC综合协调控制策略
title:AVC Comprehensive Coordinated Control Strategy of Centralized Condenser in Northwest Power Grid
作者：肖洋, 李志强, 程林, 汤磊, 夏潮, 梁英, 宋锐, 王东阳, 李贺文
authors:Yang XIAO, Zhiqiang LI, Lin CHENG, Lei TANG, Chao XIA, Ying LIANG, Rui SONG, Dongyang WANG, Hewen LI
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,
keywords:electric system,condenser,automatic voltage control (AVC),reactive power replacement,high proportion new energy,
发表日期：2023-04-30
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