摘要
当电网中出现电压越限现象时,系统进入紧急状态,需要立即采取安全校正措施,通过对某些电压调整手段的控制,把越限电压校正到预定的运行范围内。文中选取负荷节点无功补偿和变压器变比调节作为调压手段,首先提出2种电压灵敏度矩阵的概念,经过严密推导得到相关电压灵敏度矩阵的表达式,最后通过POWERWORLD软件的灵敏度计算功能和潮流验算功能验证了文中所提算法的有效性。
When voltage limit violation occurs in grids,the system operates in the emergency condition which requires instantaneous interventions.By some voltage regulation strategies,the abnormal voltage can be adjusted within designated operation range.The paper takes the reactive power compensation of load nodes and the voltage ratio adjustment of transformers as regulation measures and proposes 2 kinds of voltage sensitivity matrix concept.By rigorous deduction,relative voltage sensitivity matrix formula is obtained.Finally,the efficiency of the proposed algorithm is validated by sensitivity calculation and power flow checking functions of POWERWORLD.
出处
《陕西电力》
2010年第11期77-80,共4页
Shanxi Electric Power
关键词
电压越限
灵敏度指标
灵敏度矩阵
电压调整
voltage limit violation
sensitivity index
sensitivity matrix
voltage regulation
