区域储能站参与扰动平抑的配电网多时间尺度自律策略

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,提出了新能源配电网利用储能站及可控资源实施区内自律管控的输配协调消纳策略。阐述了配电网自律运行实施策略,分别从短、中及长时间尺度建立描述配电网区域自律运行指标及相关计算方法。提出短时间尺度储能站功率扰动的平抑策略及基于储能、需求侧响应和网络重构手段的中、长时间尺度配电网自律运行策略。为合理调节储能站荷电状态,提出改善荷电状态的区域储能电站修正策略。以河北省某区域配电网为算例进行仿真分析,结果证明了所提方法的有效性及合理性。

Regional energy storage stations participate in disturbance stabilization of a distribution network multi-time-scale self-discipline operation strategy

In order to reduce the power disturbance caused by the random uncertainty of new energy generation and improve the multi-level orderly absorption capacity of new energy in a power system, this paper puts forward the strategy of a new energy distribution network to use energy storage stations and controllable resources to implement regional autonomous control of transmission and distribution coordination and absorption. First, we describe the implementation strategy of autonomous operation of the distribution network, and establish regional autonomous operation indices and relevant calculation methods for short, medium and long time-scales. The power disturbance suppression strategy for a short-time-scale energy storage station and the self-regulated operation strategy of medium and long-term time-scale distribution network based on energy storage, demand response and network reconstruction are proposed. In order to adjust the charge state of the energy storage station reasonably, a correction strategy of improving the charge state of the regional energy storage station is put forward. Finally, a regional distribution network in Hebei province is taken as an example to carry out simulation analysis and verify the effectiveness and rationality of the method. This work is supported by the National Natural Science Foundation of China (No. 51807172) and the Science and Technology Project of Xingtai Power Supply Branch of State Grid Hebei Electric Power Co., Ltd.