大规模风电机组集中接入对系统短路电流的影响

摘要

With centralized integration of large-scale wind farms, the influence of wind power on short circuit current has become an important concern in power planning and operation. Short circuit characteristics of various wind turbines are analyzed in detail. Bus short circuit currents are simulated with practical examples under different access form, wind turbine type and installed capacity. The influence of wind power on short circuit current of near area is revealed from different aspects. Considering limiting factors of short circuit current, certain wind farm access forms and wind turbine types are recommended. The results have important reference for planning and construction work of large scale wind power.%随着风电集中并网规模的增加,风电对系统短路电流的影响已成为当前电力规划和运行部门的重要关注点.详细分析了各类风电机组的短路特性,并通过实际算例仿真模拟了不同风电接入形式、风电机型及风电装机规模工况下近区母线短路电流的变化情况,从多角度揭示了风电并网对近区母线短路电流的影响规律,量化了风电装机规模对110 kV及以上电压等级并网母线短路电流的贡献幅值,并对考虑短路电流限制因素的风电并网形式和风机选型提出了建议.