基于智能电网调度控制系统的超高压输电线路参数修正方法

The Correction Method for Ultra High Voltage Transmission Line Parameters based on Smart Grid Dispatching and Control System

随着我国电网规模不断扩大,电网结构日益复杂。线路参数的准确性对保证电网安全稳定地运行具有重要意义。由于种种原因,某些情况下线路参数的准确度难以满足当前各类电力系统分析计算的需要。因此,本文提出了一种基于智能电网调度控制系统的超高压输电线路电抗参数与对地电容参数修正方法。该方法通过对线路两端潮流方程的合理简化,利用线路之间相角的关系和多个不同时间断面,对电抗参数与对地电容参数进行计算与修正。应用实践表明,该方法简单有效,可满足电力系统各种高级应用对超高压线路电抗参数与对地电容参数准确度的需求。

With the continuous expansion of the scale, the power grid structure is increasingly complex. So, the accuracy of the Transmission line parameters have great significance to ensure the safe and stable operation of power grid. But for a variety of reasons, the accuracy of the transmission line parameters is difficult to meet the needs of all kinds of power system analysis and calculation in some cases. This paper propose a correction method for ultra high voltage transmission line parameters based on smart grid dispatching and control system. The method simplifies the power flow equation of the two ends of the transmission line, by using the relationship between the transmission line phase and multiple different time sections, calculating and correcting the reactance parameter and ground capacitance parameter of transmission line. Application practice shows that this method is simple and effective, meeting the requirement of power system analysis and calculation on the accuracy of transmission line parameters.