风电场主变接地方式对继电保护定值计算的影响及优化

Influence and optimization of main transformer's grounding mode of wind farm on the relay protection setting calculation

通过示例电网介绍在110 kV风电场密集接入电网运行的背景下,分析110 kV风电场主变接地方式不同对电网继电保护定值整定的影响。在满足整定计算规程、反措的情况下,根据电网的实际情况,通过不同接地方式的计算结果分析、优化110 kV风电场主变接地方式,适当降低电网继电保护定值配合的难度,切实提高继电保护装置运行的效果。

Based on the example grid, the influence of different main transformer g grounding modes of 110 kV wind farm on the setting of relay protection is analyzed under the background of 110 kV wind farm intensive access grid operation. In the case of satisfying the setting calculation procedure and countermeasure, according to the actual situation of the power grid, through the calculation results of different grounding methods, the main grounding mode of 110 kV wind farm is analyzed and optimized, which can reduce the difficulty of the grid relay protection setting and effectively improve the effect of the operation of the electrical protection device.