Recently, after the Ministry of Finance and the National Development and Reform Commission have issued new distributed power generation policies, China Southern Power Grid Co., Ltd. has formally issued the “Guiding Opinions on Further Supporting the Development of New Energy Sources such as Photovoltaic Power†from grid-connected, purchased, sold, grid-connected dispatch management, etc. The party supports the orderly and coordinated development of new energy sources. At the same time, in order to support the distributed power grid connection, the State Grid Corporation is no longer confined to the entire process of providing distributed power supply access to the grid for technical consulting, project acceptance and commissioning, etc. It also began to focus on strengthening distribution network construction to support large-scale distribution. Power supply access. The two major power grid companies are the specific implementers of the national policy to promote the development of distributed power supplies. Therefore, a series of measures of the two major power grids will undoubtedly inject the most direct driving force into the grid-connected distributed power supply.
July grid-connected distributed power project doubled
On August 19th, the photovoltaic power generation project of Zhang Hairun, a resident of Baotou Village, Shangjie District, Zhengzhou City, Henan Province, was successfully incorporated into the State Grid after Zhengzhou Power Supply Company's testing, and realized the first personal photovoltaic power generation system integration in Zhengzhou; August 15, Zhejiang Province The staff of Beilun Customer Sub-center Inspection Station of Ningbo Power Supply Co., Ltd. completed the re-inspection of the first and second equipment, communication, measurement, and marketing management of the 20 MW user-side concentrated photovoltaic power generation project in Beilun District of Shanghai Baosteel. , marking the formal grid-connected power generation of the largest photovoltaic power generation project in Ningbo; recently, with the assistance of Changzhi Power Supply Company of Shanxi Province, Zhao Ruixing, a Wuxiang County resident, merged 18 kilowatts of photovoltaic power generation into the State Grid, and this resident user became the first distributed in Shanxi Province. Residents of PV grid-connected users... Recently, distributed power grid-connected projects across the country have significantly accelerated their speed and gradually entered private households.
State Net relevant sources told reporters: "Since November 1, last year, the State Grid "on the completion of distributed photovoltaic power generation and grid service work," the implementation of the distributed power installation business received across the country has been rising month by month , and successively have individual distributed photovoltaic power generation projects successfully connected to the grid."
The latest statistics show that as of August 5, 2012, since November 1, 2012, the State Grid system distributed power related consulting business 12,803, report installation business 943, 1.81 million kilowatts, of which photovoltaic 910, 1,726,400 kilowatts; Biomass, wind power, natural gas and other types of 33 households, 83,600 kilowatts; 225 completed grid-connected operation, generating capacity of 271,100 kilowatts, cumulative power generation of 66,023,300 kwh.
In contrast, as of the end of June, the State Grid accepted a total of 604 reporting businesses relating to the distribution of grids with distributed power generation, with a power generation capacity of 1,200,400 kilowatts, of which 585 were photovoltaics, with a power generation capacity of 1,152,100 kilowatts; biomass, wind power, Natural gas and other types of 19 households, generating capacity of 48,300 kilowatts; grid-connected distributed power supply 102, capacity of 130,000 kilowatts. This means that only one month in July, the State Grid system distributed power grid connection project has doubled.
Strengthen distribution network to ensure distributed power supply to the grid
It is understood that due to the decentralized distributed power supply and the small scale, the grid acceptance has not kept pace, and the phenomenon of power limiting will inevitably occur. For example, it takes only a few months to build a distributed photovoltaic or wind power project, and the supporting power grid has a relatively long construction period from project approval, approval to construction, acceptance, transmission and distribution. Moreover, at present, China's general distribution network is relatively weak and it is difficult to support the large-scale growth of distributed power. Therefore, only by building a strong intelligent distribution network and strengthening the automatic search of cable fault points and automatic isolation of faults can support the access of a large number of distributed power sources, reduce the phenomenon of abandoning wind and abandon the wind, and improve the safety and economy of distributed power projects. .
To this end, the State Council executive meeting held recently confirmed that the “Strengthen the construction of urban distribution networks and promote the intelligentization of the power grid†is listed as one of the six key tasks for urban infrastructure construction. Recently, Chen Feng, general manager assistant of the State Grid, also stated: “The current grid companies are accelerating the improvement of the grid construction of distributed energy grids, especially the construction of distribution grids of 10 kilovolts or less. The State Grid is carrying out the distribution of electricity from 2013 to 2020. Network rolling planning, distribution planning will be extended to the county level grid."
The State Grid has made it clear that it will adhere to unified planning and unified standards to ensure that the development of distribution networks is coordinated with the development of new urbanization, the development of distributed power supplies and electric vehicles, the convergence of the overall planning and long-term goals of the power grid, and the enhancement of user access plan management. Enhance the coordination with the distribution network planning; South Network also stressed that the distribution automation should take into account the city's positioning, power supply reliability requirements, the structure of the network structure, technical strength and basic management conditions and other factors.
Series supporting policies are constantly improving
“The power grid must be overhauled on a regular basis every year. It is necessary for large power plants to implement our dispatching instructions. However, for this type of home-type power station, if a line is to be shut down for power overhaul, it is required not to transmit power to the grid. Will they listen?†Related people expressed concern to reporters. It is understood that in the face of the challenges posed by the distributed power grid connection, China's power grid companies will review the technical specifications of the dispatching operation of the distribution network, improve the coverage of application acceptance, grid-connected program development, grid acceptance, power trading and deployment. The service coordination mechanism for the whole process of contract negotiation, grid-tied scheduling, etc., refines the relevant technical requirements for photovoltaic power generation access systems.
In addition, with the monthly increase of distributed power supply installation services, the coverage of distributed power supply network customers has become wider and wider, and many new situations have emerged. Most of the owners of photovoltaic power generation are not professional power units, and some are homes or natural persons. In response, Zhang Zhengling, deputy director and spokesperson for the State Grid Development Planning Department, said: “When the photovoltaic industry turned to the domestic market, it found that the domestic market environment was not adapted to the development of the photovoltaic industry, and these conflicts were all reflected through the grid link. Although the illness is in the power grid, the root cause is not in the power grid. Therefore, it is by no means a matter for grid companies to promote distributed power grid connection.
Fortunately, in order to accelerate the development of distributed power projects, the relevant state departments are also speeding up the improvement of relevant policies. Recently, the Ministry of Finance issued a document clarified that the state gives subsidies for distributed photovoltaic power generation projects according to the amount of electricity; the National Development and Reform Commission issued the Interim Measures for the Administration of Distributed Generation; the National Energy Administration and China Development Bank are planning to jointly issue documents to support distributed photovoltaic power generation financial services... It can be said that the supporting policies for distributed power grid-connected projects are being continuously improved and refined.
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