含“光储直柔”的新型低压配用电系统控制策略研究

Research on Control Strategy for New Low-voltage PowerDistribution and Utilization System with PEDF

摘要:

在双碳目标驱动下，为适应高比例可再生能源和高比例电力电子设备”的新型电力系统“双高”结构，研究基于光伏发电、储能、直流配电、柔性用电于一体的新型低压配用电系统具有重要意义，这是实现新能源发电消纳、促进用户灵活用电的重要途径。在此背景下，提出了一种“光储直柔”低压配用电系统控制策略。首先，建立了“光储直柔”系统的基本架构，分析了该系统的工作原理、基本结构和功率分配策略。然后，针对高比例可再生能源及电力电子装置接入的配用电系统场景，分别研究了“光储直柔”系统各部分的关键技术及控制策略。最后，通过仿真验证该系统在不同运行环境下具有良好的响应能力和稳定性。

Abstract:

Driven by the "carbon peaking and carbon neutrality" goal, and in order to adapt to the "double high" structure of new power system with a high proportion of renewable energy and a high proportion of power electronic equipment, it is of great significance to study the new low-voltage power distribution and utilization system based on photovoltaics, energy storage, direct current and flexibility (PEDF), which is an important way to realize the consumption of renewable energy power generation and promote the flexible use of electricity by users. Against this background, the low-voltage power distribution and utilization system with PEDF is proposed. First of all, the basic structure of PEDF system is established, and the working principle, basic structure and power allocation strategy are analyzed. And then, for the scenario of integration of a high proportion of renewable energy and power electronic device to power distribution and utilization system, the key technologies and control strategies of each part of PEDF system are studied separately. Finally, through the example verification, the proposed system has good response capability and stability under different operating environment.