高、低压感性无功补偿配置方案研究

Study on High and Low Voltage Inductive Reactive Compensation Configuration

分析了典型地区电网存在的一种无功电压特性,针对存在的无功电压问题,提出了感性无功补偿的方案。基于无功补偿调压评估模型,推导出了高压、低压感性补偿调压效果比较分析公式。从多个角度(调压效果、适应未来电网发展趋势、经济性、变电站新装补偿装置可行性)对上述2种感性无功补偿规划结果进行比较。通过算例,对2种补偿方案从以上几个角度进行综合比较,表明本文推导的高、低抗补偿调压估箅公式具有较高精度,能用于高、低抗补偿调压效果的预估算,同时也得出了在220 k V电网层面,低抗无功补偿方案总体上要优于高抗无功补偿方案的结论。

In this paper, a kind of reactive power voltage characteristics existed in power grid of a typical regional is analyzed.For the existed issue of reactive power voltage, the inductive reactive compensation scheme is proposed.On the basis of the evaluation model of reactive power voltage regulation, the comparison analysis formula for high and low voltage inductive compensation and voltage regulation result is deduced.The above two kinds of reactive power compensation plan result is analyzed from multiple aspects （voltage regulation efficiency, suitability of development trend of grid in the future, economy and feasibility on installing compensation device for substation ）.It is shown through comprehensive comparison of above two compensation schemes from above aspects by way of calculation that the voltage regulation estimation formula for high and low inductive compensation which is deduced from this paper has high accuracy, can be used in the prior estimation of high and low inductive compensation and, at the same time, that in the 220 kV power grid the low inductive reactive power compensation is in general superior to high inductive reactive power compensation.