PhotovoltaicVirtual Synchronous Generator Engineering Application Effects Analysis and Optimization

2018 China International Conference on Electricity Distribution (CICED) Pub Date : 2018-09-01 DOI:10.1109/CICED.2018.8592582

Li Zhi, Gong Yu, Song Peng, Li Na, Yang Weixin, Wei Zheng

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引用次数: 1

Abstract

Firstly, this paper analyzed in theory two kinds of frequency regulation control strategies, swing equation control strategy and additional frequency regulation characteristics control strategy, which were adopted by the demonstration project. The differences between two strategies in frequency modulation start-up time, oscillation risk, mode of supporting power, inertia response dead zone and so on were compared and studied. Then, relying on the recorded field data, paper showed the actual frequency modulation effect and characteristics of differences between the two strategies. Lastly, we optimized the VSG control strategies and proposed two new ones to make full ues of the available power of PV-VSG and coordination of photovoltaic and energy storage effectively to stable the grid frequency. The effectiveness of new control strategies was verified on a RT-LAB semi-physical simulation platform. This work is supported by science and technology project of the headquarter of State Grid Corporation of China.

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光伏虚拟同步发电机工程应用效果分析与优化

首先，从理论上分析了示范工程中采用的两种调频控制策略:摆幅方程控制策略和附加调频特性控制策略。比较研究了两种策略在调频启动时间、振荡风险、支撑功率方式、惯性响应死区等方面的差异。然后，根据现场记录的数据，展示了两种策略的实际调频效果和特点差异。最后，对VSG控制策略进行了优化，提出了两种新的VSG控制策略，以充分利用PV-VSG的可用功率，并有效地协调光伏与储能以稳定电网频率。在RT-LAB半物理仿真平台上验证了新控制策略的有效性。本研究得到了国家电网公司总部科技项目的支持。

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2018 China International Conference on Electricity Distribution (CICED)

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