基于全寿命周期成本的电压暂降治理设备综合配置规划

Allocation plan of voltage sags mitigation devices based on life cycle cost

针对传统电压暂降就地治理方案中容量浪费的问题,提出了一种基于全生命周期成本的治理设备综合配置规划方法。通过建立串、并联型治理设备(以DVR和STATCOM为例)的数学模型,基于电压暂降事件的风险评估,分析比较了串、并联治理设备的治理特点。该方法综合考虑治理方案的投资成本和经济效益,以经济性最优为目标,确定电压暂降治理设备的综合配置。采用IEEE33节点配电网络进行了仿真验证。仿真结果证明,当配网内含有多个敏感负荷时,所提出的综合优化配置方案相对传统的就地治理方案更具经济性。

As the traditional voltage sag mitigation schemes cannot solve the waste problem of mitigation capacity,a new method of allocation plan of voltage sags mitigation devices based on life cycle cost is presented in this paper.According to the mathematical model of series and parallel mitigation devices(such as DVR and STATCOM),the differences of mitigation characteristics between those devices are analyzed.Considering the investment cost and economic benefit of the mitigation schemes,allocation plan schemes of voltage sags mitigation devices are obtained.The proposed method has been applied to IEEE 33-bus test system and compared with the traditional mitigation schemes.The results validate its economy and practicality when there are several sensitive loads in the distribution network.