地区电网的合环潮流分析与控制

在地区电网调度运行中,控制合环潮流是调度人员的一项重要任务.文章对地区电网的合环潮流进行了分析推导,建立了合环潮流与电压幅值、相角和等值阻抗之间的关系,并结合地区电网的特点提出了根据设备限额求解功角闭锁量的方法.现场试验证明,该方法正确有效,对调度运行人员降低合环潮流也具有很强的指导意义.

ANALYSIS AND CONTROL OF LOOP POWER FLOW IN REGIONAL POWER NETWORK

In the dispatching and operation of regional power network the control of loop power flow is an important task of the dispatchers. The authors conducted the analysis and derivation of loop power flow in regional power network, and determined the relation of the loop power flow with voltage amplitude, angle and equivalent impedance. Considering the features of regional power network and according to the allowable power transmission capacity, a method to determine whether the threshold of voltage phase angle difference at both sides of the circuit breaker was exceeded, by which the loop circuit could be formed, was obtained. The field tests prove that the presented method is effective.