Industrial and Commercial Carport Photovoltaic Grid-Connected Power Station Voltage Fluctuation and Flicker, Photovoltaic Direct-Flexible System

Voltage Fluctuation and Flicker

After the photovoltaic power station is connected to the grid, the voltage fluctuation and flicker generated at the point of common coupling shall meet the requirements of GB/T 12326-2008 "Power Quality Voltage Fluctuation and Flicker" and the "Technical Regulations for Grid Connection of Photovoltaic Power Stations of State Grid Corporation of China". Due to the influence of weather, clouds, environment, and other factors, photovoltaic power stations can be regarded as a fluctuating load with a certain degree of randomness. The voltage fluctuation limit is 2%; for less frequent voltage fluctuations, the voltage fluctuation limit can be referred to as 3% for frequencies less than once per hour.

According to the steady-state operation of the inverter, the voltage fluctuation is 0.317%, which is less than the voltage fluctuation limit of 2%; the maximum voltage fluctuation of a single inverter is 0.750%, which is less than the voltage fluctuation limit of 3%, meeting the requirements of GB/T 12326-2008 "Power Quality Voltage Fluctuation and Flicker" and the "Technical Regulations for Grid Connection of Photovoltaic Power Stations of State Grid Corporation of China".

According to the requirements of the "Technical Regulations for Grid Connection of Photovoltaic Power Stations of State Grid Corporation of China", after the photovoltaic power station is connected to the grid, the short-term flicker Pst limit at the point of common coupling is 1.0, and the long-term flicker Plt limit is 0.8. The voltage flicker value caused solely by the photovoltaic power station at the point of common coupling shall be handled differently according to three levels based on the proportion of the installed capacity of the photovoltaic power station to the power supply capacity and the system voltage, as stipulated in GB/T 12326-2008 "Power Quality Voltage Fluctuation and Flicker".

Jiangsu Mangzhong Construction Co., Ltd. is a comprehensive energy service provider specializing in the photovoltaic field, dedicated to being a smart energy enterprise engaged in photovoltaic power station investment, development, design, construction, intelligent operation and maintenance, professional consulting services, and photovoltaic power station equipment recycling.

Company Name: Jiangsu Mangzhong Construction Co., Ltd.

Business Scope: EPC of photovoltaic power stations and investment in photovoltaic solar power stations

Company Landline: 025-5888 3737   

Mobile Number: 159 5163 4545

Company Website: http://www.mangz.cn