Photovoltaic power generation in China is warming up in developed regions

In accordance with the requirements of the State Council Executive Meeting to “Strive to support the photovoltaic industry out of its predicament and healthy development” and “Efforts to stimulate the effective demand of the domestic market”, the National Energy Administration recently held a symposium to promote the healthy development of the photovoltaic industry. The new National Energy Bureau Director Wu Xinxiong said that We will promptly implement the requirements of the State Council, vigorously develop the distributed photovoltaic power generation market, and promote the healthy development of the photovoltaic industry.

This is undoubtedly a big positive for China's photovoltaic manufacturing industry, which is in trouble because of the "double opposition" between Europe and the United States. Affected by this, in China's economically developed regions and also the global photovoltaic industry gathering area - the Yangtze River Delta region, photovoltaic power generation market began to warm up.

High-level news spread that the Yangtze River Delta photovoltaic warmed up. On June 14th, Premier Li Keqiang presided over the State Council executive meeting and proposed that the photovoltaic industry is an important development direction of the new energy industry. China's photovoltaic industry already has considerable international competitiveness, but is affected by the global photovoltaic market downturn. Due to the insufficiency of application in the domestic market, there are currently difficulties in production and operation, and it is necessary to support the photovoltaic industry to emerge from the predicament and develop healthily. While striving to consolidate the international market, we must use the methods of reforms to give play to the role of the market mechanism, focus on stimulating effective demand in the domestic market, and promote industrial innovation and upgrading.

In order to implement the requirements of the State Council, the National Energy Administration recently held a symposium to promote the healthy development of the photovoltaic industry. Wu Xinxiong, deputy director of the National Development and Reform Commission and director of the National Energy Administration, said that the emphasis will be on high prices in the economically developed regions and high power load peaks and valleys. The industrial parks with relatively small subsidies, large electricity consumption, and stable load will carry out demonstrations of distributed photovoltaic applications in accordance with the principle of “spontaneous use and local consumption”.

In China's economically developed Yangtze River Delta region, photovoltaic power generation market has begun to warm up.

On June 29th, as the largest single-construction photovoltaic power generation project in Asia, the project of the roof station of Hangzhou East Railway Station was connected to the grid for power generation. The project is located at No.1 Xinfeng Road, Jianggan District. The total installed capacity is 10 megawatts. It is connected to the grid with a voltage of 10 kilovolts and is installed on the roof of the building of Hangzhou East Railway Station. It is an application demonstration project for photovoltaic buildings. The total installed capacity of the engineering design is 10 megawatts, the annual peak sunshine hours of the project is 1762 hours/year, the comprehensive efficiency coefficient of the engineering photovoltaic power generation system is 0.77, and the annual power generation is about 9.8 million kWh.

The Yangtze River Delta region is also a gathering place for the global photovoltaic manufacturing industry. In order to support the enterprises to get out of the predicament, the photovoltaic projects here have already started quietly. For example, in Taizhou, Jiangsu, the demonstration project of solar photovoltaic building application of China Medical City has been officially put into operation. The PV power plant is the first photovoltaic power generation project in Taizhou City that has passed 20 kV grid-tied grids and is distributed on the roofs of 10 plants. With an area of ​​approximately 13.36 million square meters, a total of 5,560 WPV photovoltaic modules have been installed, with a total capacity of approximately 1.28 MW. The average annual on-grid electricity consumption is approximately 1,245.2 thousand degrees, and all generated power is available on the Internet.

In Jinhua, Hengdian Group Dongmo Co., Ltd. photovoltaic power station was formally connected to power generation on April 8. The total generating capacity of this photovoltaic power plant is 20.7 megawatts, occupying an area of ​​200,000 square meters and a total investment of 230 million yuan. The design life of the PV power station is 25 years, and the annual power generation is about 20 million kilowatt-hours, which solves 10% of the electricity consumption in the park.

Grid companies actively respond to promote the healthy development of solar energy Lin Haishi, a villager in Taizhou, has recently become a local celebrity. He took the lead in installing solar panels on the roof of his home and equipped with batteries, inverters and other equipment to build a photovoltaic power station for home use. The technical staff of the Linhai Power Supply Bureau came to the site for free. Why Xianjun installed a two-way meter. Up to now, the 5 kW photovoltaic small power station he built on his home roof has accumulated 850 kWh of electricity, of which 760 kWh is sold to the big power grid.

It is understood that with the continuous increase in the "double reverse" pressure of PV products in China and Europe, the State Grid Corporation [Weibo] released to the public "Opinions on the Implementation of Distributed Power Grid Services" on February 27 this year. It promised to open up green channels for all types of distributed power projects such as photovoltaic power generation, wind power, and access system engineering, and to freely access the grid and purchase electricity in full. This move will inspire more and more home photovoltaic projects to join the army of photovoltaic power generation.

Ningbo Jingyuan Solar Energy Co., Ltd., located in Ningbo Bonded Eastern District, is a company focusing on the research and production of polysilicon films for solar cells. After learning that this solar energy manufacturing company had to invest in the construction of a 1,200-kilowatt photovoltaic power generation demonstration project, Beilun Customer Sub-center of Ningbo Electric Power Bureau took the initiative to contact and optimize the flow of services to open a green channel. At present, the total installed capacity of 1200 kW Ningbo's largest photovoltaic project has been formally connected to the grid.

Jiaxing City planned a 15 square kilometer “China Photovoltaic Science and Technology City” and proposed the concept of building a national photovoltaic high-tech industrialization base and a national distributed photovoltaic power generation scale application demonstration area. In order to support the construction of the local photovoltaic industry base, Jiaxing Power Bureau has launched six service initiatives, formulated detailed rules for the implementation of grid-connected services such as distributed power supply, and technical specifications for grid access, in an effort to promote the sustained health of the distributed photovoltaic industry in Jiaxing City. development of.

In Jinhua Wuyi and Wuyi County Power Supply Bureau Safety Inspection Department, Ministry of Development and Construction and other professional professionals visited the county's key PV companies to investigate and understand in detail the customer's grid connection needs, on-site preaching of power grid-connected work processes and precautions, and national Preferential policies. Various power supply business office windows issued the “Opinions on Doing a Good Job in Distributed Photovoltaic Generation Grid-connected Services” brochure and application form for grid connection of distributed photovoltaic power generation projects, and opened a “Green” for distributed photovoltaic power generation grid-connected services. Channels, in accordance with the principle of internal transfer and external transfer, establish a “one-to-one external” service mechanism, and provide policy-based publicity, technical consulting, business acceptance, and on-grid services.

Efforts have been made to break through the technical bottleneck and ensure the reliable operation of photovoltaic power plants. With the strong support of the country's top leaders and the full cooperation of the State Grid Corporation of China, the policy bottleneck of the distributed photovoltaic power generation market is breaking through, but technical problems seem to exist. According to experts from the State Grid Energy Research Institute, photovoltaics require more flexible peaking power supplies and stronger grid-connected technology facilities, resulting in greater probability and impact of off-grid accidents. Photovoltaic power generation and grid-connected issues are more problematic than wind power.

In this regard, the national grid system has adopted a number of technical measures to support the development of the photovoltaic industry.

In order to avoid the potential safety hazards caused by the islanding effect of distributed photovoltaic generation, the State Grid Corporation of China organized the “Technical Specification for Distributed Photovoltaic Special Low-Voltage Anti-Islanding Devices” and selected Sanqiao Village, Fuyang City, Hangzhou as the grid-connected photovoltaic of the State Grid Corporation of China. Pilot. The Fuyang Municipal Power Supply Bureau is responsible for piloting low-voltage photovoltaic access distribution network adaptability reforms, and doing a good job in the application of low-voltage anti-islanding devices in distributed photovoltaic access distribution network systems and equipment testing and data acquisition and analysis. In April this year, Sanqiao Village in Fuyang City launched the first low-voltage photovoltaic anti-islanding device in the newly-built farmhouse site.

According to the news from Jiashan International Woodcarving City, the photovoltaic power generation grid-connected interface integrated device jointly developed by Jiashan County Power Supply Bureau and Nanrui Jibao Electric Co., Ltd. was put into trial operation at the beginning of June. For the first time in the country, the device has realized four functions: integration of relay protection, measurement and control, power quality, and dispatch communication, which has changed the functions that at least required three devices to achieve. In the case of a significant increase in functionality, the device size is more compact, convenient for on-site installation, supports serial port, network port, optical port, wireless and other communication methods, can access hundreds of communication protocols, and supports almost all types of power equipment.

“This device provides a complete solution for the information access of photovoltaic power plants.” The person in charge of the Jiashan County Power Supply Bureau explained that “Each access point can save users at least 70,000 yuan, which is of great value for promotion and application. ."