含规模化空气源热泵的电网稳定性分析与风险评估

Stability analysis and risk assessment of power grid with large scale air source heat pump

针对大量空气源热泵同时启动时,会对电网造成冲击并影响电网安全稳定运行的问题,提出了一种基于非序贯蒙特卡洛模拟的评估方法.基于对定频空气源热泵和变频直流空气源热泵启动特性的研究,使用非序贯蒙特卡洛方法和风险理论模拟并分析了规模化空气源热泵启动时电网的稳定特性和电网风险.对某村落低压配电网的算例研究结果表明,提出的评估方法能有效评估含规模化空气源热泵启动时电网的稳定性和风险指标,为规模化空气源热泵对电网稳定带来的影响提供了有效的分析手段.

In order to solve the problem that when the a large number of air source heat pumps are simultaneously started,the power grid will get impacted and the safe and stable operation of power grid will be affected,an evaluation method based on non-sequential Monte Carlo simulation was proposed.Based on the study on the startup characteristics of both air-source heat pump with fixed frequency and DC air-source heat pump with variable frequency,the non-sequential Monte Carlo method and risk theory were used to simulate and analyze the stability characteristics and power grid risk when the large scale air source heat pumps were started.The research results of low-voltage distribution power grid for a certain village show that the proposed method can effectively assess the stability and risk indexes of power grid when the large scale air source heat pumps get started,which can provide an effective analytical method for the influence of large scale air source heat pump on the stability of power grid.