暂态稳定断面功率极限区间和关联度指标计算  

Calculation of Power Limit Interval and Correlation Degree for Transient Stability Section

作　　者：徐泰山[1,2] 鲍颜红[1,2] 苏寅生[3] 张金龙[1] 任先成[1] 姚海成[3] XU Taishan BAO Yanhong SU Yinsheng ZHANG Jinlong REN Xiancheng YAO Haickeng(NARI Group Corporation （State Grid Electric Power Research Institute）, Nanjing 211106, China State Key Laboratory of Smart Grid Protection and Control, Naniing 211106, China Electric Power Dispatching and Control Center of China Southern Power Grid, Guangzhou 510623, China)

机构地区：[1]南瑞集团公司(国网电力科学研究院),江苏省南京市211106 [2]智能电网保护和运行控制国家重点实验室,江苏省南京市211106 [3]中国南方电网电力调度控制中心,广东省广州市510623

出　　处：《电力系统自动化》2016年第20期154-160,共7页Automation of Electric Power Systems

基　　金：国家电网公司科技项目"基于稳定性量化分析的大电网多断面暂态稳定交互影响及协调控制技术研究";中国南方电网有限责任公司科技项目"南方电网安全稳定综合防御系统建设与实施(二期)"~~

摘　　要：针对日益复杂的运行情况和系统对安全经济运行的要求,提出了暂态稳定断面功率极限区间和关联度指标计算方法。基于暂态安全稳定量化分析方法获得的预想故障下安全稳定裕度、模式和元件的参与因子,结合功率对输电断面功率的灵敏度计算发电机和负荷对断面功率极限的影响因子,通过发电机、负荷功率调整计算出功率极限的最大值和最小值。基于安全稳定裕度筛选得到输电断面关键故障,采用裕度为权重的加权平均计算发电机和监视母线的综合参与因子,通过发电机和母线参与因子的相关性分析计算两个输电断面的关联度指标。所提出的方法能够为调度运行人员快速掌握当前运行方式下各个输电断面的暂态安全稳定水平,以及彼此之间的交互影响程度提供技术手段,四川电网的算例分析验证了方法的实用性和有效性。To meet the requirements of power system safe and economical operation under increasingly complicated conditions, a transient stability limit interval and correlation indices calculation method of the transmission sections is proposed. By comprehensively considering security and stability margin, pattern, component participation factors under the contingencies have been obtained based on the transient security and stability quantitative analysis method. And the transmission sections power sensitivity of different generator and load buses, the transmission limit influence factors of the generator and load buses are given. On this basis, the maximum and minimum transmission section power limit values are calculated by adjusting different generator and load power. Based on security and stability margin screening the key faults with transmission section have been obtained; the correlation indices of the transmission sections can be calculated using the comprehensive participation factors of the generators and the monitoring buses, which are calculated by the weighted average method with the margin as weights. The proposed method can provide technical means for operators to quickly grasp the transient security and stability level of different transmission sections and the degree of interaction between two transmission sections. The practicality and effectiveness of the proposed method are verified by a case in point of the power grid. This work is supported by State Grid Corporation of China and China Southern Power Grid Company Limited.

关 键 词：暂态稳定 量化分析 关键断面 稳定区间 关联度 

分 类 号：TM712[电气工程—电力系统及自动化]