| 引用本文: | 张红丽,刘福锁,李威,牛拴保,柯贤波.多种稳定问题矩阵式量化指标及交直流协调控制策略[J].电力系统保护与控制,2017,45(23):65-73.[点击复制] |
| ZHANG Hongli,LIU Fusuo,LI Wei,NIU Shuanbao,KE Xianbo.Matrix quantitative index of multiple stability problems and AC/DC coordinated control strategy[J].Power System Protection and Control,2017,45(23):65-73[点击复制] |
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| 摘要: |
| 大电网严重故障下可能出现功角、电压和频率等多种稳定问题。研究并量化了故障严重程度等相关因素对多种稳定问题交互演化的影响。提出了基于暂态动能改善和控制灵敏度的多稳定问题矩阵式量化评价指标与方法，充分计及单一稳定和综合稳定控制效果、控制负效应和超调控制等。基于该指标提出了多种稳定问题并存条件下交直流紧急控制策略，提升了紧急控制算法对于处理复杂稳定情况的适应性。基于实际电网的算例验证了所提紧急控制策略的有效性。 |
| 关键词: 多种稳定问题 交互演化途径 矩阵式量化评价指标 负效应 交直流紧急控制策略 |
| DOI：10.7667/PSPC161895 |
| 投稿时间：2016-11-14修订日期：2017-07-22 |
| 基金项目:国家电网公司科技项目“大电网严重故障下多稳定形态交互影响分析及控制技术研究” ;国网公司西北分部科技项目“多电源类型特高压送端电网网源协调技术深化研究” |
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| Matrix quantitative index of multiple stability problems and AC/DC coordinated control strategy |
| ZHANG Hongli,LIU Fusuo,LI Wei,NIU Shuanbao,KE Xianbo |
| (NARI Group Corporation, Nanjing 211106, China;State Grid Northwest China Power System Dispatching & Control Branch Center, Xi’an 710000, China) |
| Abstract: |
| Multiple stability problems in angle, voltage and frequency may occur under severe faults in large power grids. In this paper, the impacts of the relevant factors such as the fault severity on the interactive evolvement of multiple stability problems are studied and quantified. In addition, a matrix quantitative evaluation index and a corresponding method of multiple stability problems based on the improvement of transient kinetic energy and control sensitivity are proposed, which fully take the effects of single stability and comprehensive stability control, negative effects of control and overshoot control and so on into account. Based on the index, an AC/DC emergency control strategy under the circumstance of the coexistence of multiple stability problems is proposed to enhance the applicability of emergency control algorithms to deal with complex stable situations. Simulation results based on the actual electric network demonstrate the effectiveness of the proposed AC/DC emergency control strategy. |
| Key words: multiple stability problems interactive evolvement approach matrix quantitative evaluation index negative effect AC/DC emergency control strategy |
