The impact of high-proportion photovoltaic power generation on the power balance of Zhejiang power grid and its countermeasures

Abstract

To help to bring about “carbon peaking and carbon neutrality”， the traditional power system with fossil energy as its mainstay will be transformed into a new power system dominated by new energy. Zhejiang province， against such a background， has seen rapid growth in the installed capacity of photovoltaic power generation. Due to the randomness and fluctuation of photovoltaic power generation， high-proportion photovoltaic power has imposed new impact and challenges on the dispatch and operation of power system. Therefore， based on the existing research on the impact of photovoltaic power generation integration on power system， this paper summarizes and analyzes the impact of photovoltaic power generation on the balance of power generation and consumption in Zhejiang power grid， and the countermeasures as well. First， based on the characteristics of Zhejiang power grid， this paper analyzes the impact of high-proportion photovoltaic power integration on Zhejiang power grid from three aspects： typical load curve， power supply， and photovoltaic power generation support. Then， on the basis of the known impact， the relevant challenges are summarized on the short-term and medium and long-term time scales. Finally， a solution that can adapt to the effective consumption of photovoltaics and ensure the balance of the power system with the integration of high-proportion photovoltaic power in the future is proposed.

Keywords

• photovoltaics
• zhejiang power grid
• power balance
• highly-resilient power grid