兼顾区域自律和消纳品质的配电网新能源消纳能力分析方法

Analyzing Method of the Absorption Capability of New Energy in Distribution Network with Consideration of Regional Self-discipline and Absorption Quality

为降低新能源发电随机不确定性导致配电网对主电网的强烈功率扰动,提高电力系统新能源多层次有序消纳能力,提出新能源配电网利用可控资源实施区内自律管控的输配协调消纳策略,研究在配电网资源给定条件下满足区域自律特性和消纳品质的新能源合理消纳能力分析方法。首先,阐述配电网自律运行实施策略,提出描述自律运行能力的性能指标;构建配电网新能源消纳容量优化配置模型,建立基于储能、柔性负荷和网络重构手段的配电网满足自律约束的运行行为模型,并采用遗传算法进行求解;提出考虑法纳品质的新能源消纳能力评估指标,并采用年时序仿真手段分析配置方案综合性能。最后,以某城市经济技术开发区为算例进行分析,验证了该方法的有效性及合理性。

This paper proposed a transmission-distribution coordinated absorption strategy in which the new energy distribution network applied controllable resources to regional self-discipline control,and studied a method for analyzing the reasonable absorption capability of new energy satisfying regional self-discipline characteristics and absorption quality with the given distribution resources.The goal is to handle the situation that the random uncertainty of new energy power generation leads to serious power disturbance of the distribution network to the main network and improve the multi-level orderly absorption capability of new energy in the power system.Firstly,the strategy for implementing the self-discipline operation of the distribution network was unveiled,and the performance indices of self-discipline operation capability were created.Then,the optimal allocation model for the new energy absorption capability of the distribution network was constructed,and the operation behavior model of the distribution network satisfying self-discipline constraints was built based on energy storage,flexible load,and network reconstruction,and solved by the genetic algorithm.The evaluation indices of new energy absorption capability considering absorption quality were proposed and the comprehensive performance of the allocation scheme was assessed by the annual time series simulation.Finally,an economic and technological development zone in Hebei Province was taken as an example for analysis to verify the effectiveness and rationality of the proposed method.