基于二进制遍历法的负序电流治理装置研究

电网三相电流不平衡是一种普遍存在的现象.通过对称分量法,可以将任意三相不平衡电流分解为正序电流、负序电流和零序电流.负序电流过大将会导致电网的电能损失,甚至引起继电保护装置误动作,给电网的安全运行带来隐患.提出了一种负序电流治理装置,通过二进制遍历法控制电容器的投切,以达到治理负序电流的效果.

Study on the Negative Sequence Current Control Device Based on the Bionary Traversal Method

Grid phase current imbalance is a common phenomenon.Through symmetrical components,it can be break down into a positive sequence current,negative sequence current and zero sequence current.Negative sequence current,if too large,will result in loss of power grid,and even cause malfunction protection devices causing risks to the safe operation of the grid security.For this reason,a negative sequence current control device which switches via binary traversal method is presented to control the capacitor and the effect of negative sequence current.