考虑热泵负荷和分布式光伏的配微网协调调度

随着农村清洁供热改造以及城镇分布式光伏建设的不断推进，配电网中出现了大量农村微电网。分布式光伏的强随机性和波动性给电网的运行调控带来了诸多挑战，电网面临剧烈的潮流波动和严重的电压越限等问题。首先，构建了计及热泵、光伏和储能的配微网分解协调模型，其中热泵用等效状态空间模型描述；然后，提出一种配微网有功无功协调优化方法，并采用改进的Benders分解算法进行求解；最后，在D141-M4算例系统上进行了算例测试。测试结果表明，所提方法可以在保证用户舒适度的前提下，有效降低电网峰值负荷，并提升电压安全水平。

Study on Circuit Service Without Total Outage of the 500 kV Transmission Line of Four Circuits on One Tower

In order to provide a technical basis for circuit service without total outage of the 500 kV transmission line of four circuits on one tower, the induced voltage of outage circuits were calculated by simulation under the condition of two circuits operating while the other two outage, or three circuits operating while the other one outage. The calculation result indicates that when the two ends of outage circuits is ungrounded, the max peak value of the induced voltage of outage circuits can reach as high as 105 kV; when the two ends of outage circuits is grounded, the max peak value of the induced voltage of outage circuits can also reach as high as 95 V. It is proposed that, when the 500 kV four circuits on one tower is incomplete outage, the service operation can be live working, or power-off working with safety protective measures.