On the Gobi Desert on both sides of the 314 Provincial Highway in Dunhuang, Gansu, a row of blue solar panels are unusually conspicuous in the yellow eyes. From time to time, tourists have stopped taking pictures. They don’t know, because there are not enough delivery channels, nearly half of the panels are empty. Sunbathe.
This is just a microcosm of the grid neck of Gansu, a new energy province in the west. The reporter found that in the past ten years, the installed capacity of new energy in Gansu has increased by 805 times, but its own consumption is limited. The power grid is lagging behind due to factors such as long approval period, which leads to abandonment of wind and abandonment of light. 50.
It will always be fine. Enterprises and local governments will pin their hopes on the approval of the Jiuquan-Zhuzhou UHV line. The industry believes that the actual situation may be much more pessimistic. Under the enthusiasm of decentralization of approval and the construction of thousands of kilowatt-class energy bases in various cities, the situation of power cuts may further deteriorate.
On July 25th, this was the third month of a large-scale blackout of the grid-connected photovoltaic power station in Dunhuang. Even if it was the full amount of the power generation to acquire the verbal agreement, it would not be spared.
Since May of this year, the entire photovoltaic industry in Dunhuang has been limited by electricity, and only half of the power generated by each company can be accessed online. Our project has a power generation capacity of 90,000 kWh a day, but now it can only generate 50,000 kWh, which has caused a project loss. A person in charge of the CGN 10G megawatt photovoltaic grid-connected power generation concession demonstration project in Gansu, Gansu, told reporters.
Behind the abandoned light is a serious shortage of the power transmission channel. It is understood that Gansu has abundant solar energy resources. The annual sunshine hours in the whole province are between 1700 hours and 3320 hours, and gradually decrease from northwest to southeast. The annual sunshine hours of the Hexi area where Dunhuang is located is more than 3,200 hours, and the annual total solar radiation is 6.4 million kilojoules per square meter, which is the main base for the development of photovoltaic power generation industry in Gansu.
According to the data, as of June 2013, the photovoltaic grid-connected capacity of Dunhuang has reached 200,000 kilowatts, 10 times that of four years ago, while the delivery channel is only 110 kilovolts from Dunhuang to Guazhou with a transmission capacity of 148,000 kilowatts. Transmission lines, the delivery capacity is seriously insufficient.
The experience of Jiuquan, the capital of wind power, is exactly the same. From the first 10 million kilowatt wind power Jiuquan base started in August 2009, Gansu Jiuquan wind power began to enter a high-speed development period. At the end of 2013, the second phase of Jiuquan 10 million kilowatt wind power base will be put into operation on the grid. At that time, the installed capacity of wind power in Jiuquan will be It has reached more than 10 million kilowatts.
The momentum of this crazy development is hard to hide as the wind power connected to the throat and the contradiction: the Gansu power grid is difficult to completely absorb the wind power of the province, and there is a problem of insufficient capacity of the delivery channel. Most of the wind power in Jiuquan was sent out by the 750 kV Wusheng-Hexi-Jiuquan-Dunhuang project put into operation in 2010, and the sending capacity was only 3.3 million kilowatts. After the second channel project of Xinjiang and Northwest China Network was put into operation this year, the total transmission capacity of the channel reached There are still huge gaps of 7.5 million kilowatts.
Moreover, the second channel is mainly to solve the problem of sending electricity from Xinjiang. Jiuquan wind power is just a ride, and it can't be delivered much. There is still a problem in consumption. Zhao Dongsheng, deputy general manager of China Energy Conservation Gansu Wind Power Co., Ltd., said that in addition to the company's winning bid for the Yumen Changma concession wind power project, it can guarantee that all the power generation projects will be connected to the Internet, and other wind power projects will be limited by 30 to 40.
This statement was also confirmed by Wang Xiang, director of Jiayuguan and Jiuquan Electric Power Dispatching Control Center in Gansu. At present, Gansu's new energy grid-connected capacity ranks second in the country, and wind power is mainly concentrated in Jiuquan. Even if there are two channels now, the delivery capacity is still not enough. There are 50 wind powers in the Jiuquan area, and the limited rate of photovoltaics is about 40. Wang Xiang said.
Lag power grid construction is difficult to catch up with the development of power stations. Due to the lag of the power grid, it is impossible to guarantee full-scale acquisitions. The national grid that bears the nickname is also full of grievances. From the construction cycle point of view, the wind farm takes about one year, the photovoltaic power station is about half a year, and a 330 kV grid line construction takes one and a half years, and it cannot catch up with the speed of new energy project construction. Wang Xiang said.
A more fundamental problem is the mismatch between approval and planning. According to Ma Guangming, secretary of the Jiuquan Municipal Party Committee of Gansu Province, under the premise of encouraging new energy development in the country, the preliminary approval and process of new energy work is simple, and the approval progress is fast. All the approvals for power grid construction projects above 330 kV need to be submitted to the National Development and Reform Commission for approval. More, it takes a long time. At the same time, national planning and local planning for new energy development are not uniform. New energy development in some areas does not match power grid construction. The construction of supporting power grids is seriously lagging behind, and the inter-provincial and inter-regional consumption mechanism has not been formed.
Shu Yinzhen, deputy general manager of State Grid Corporation, believes that no matter whether it is power grid construction, technical support and wind power operation, it is not a fundamental problem of wind power grid connection. The national policy requires the State Grid to assume the responsibility of fully acquiring wind power, but the power grid itself. Does not have the appropriate control.
This contradiction is more prominent as the state decentralizes the approval authority for new energy projects. Previously, the provincial development and reform commission had limited the approval of photovoltaic power generation projects to less than 10 megawatts, and this restriction has now been lifted. In the past, although the project has been approved a lot, it is basically 9 megawatts of capacity, and the total amount is still small. Now tens of megawatts and hundreds of megawatts of projects are easy to approve, and the installed capacity has increased dramatically. A person in charge of a photovoltaic power generation company that did not want to be named said.
Although the Gansu Provincial Power Grid said that it is actively carrying out research on new energy grid-connected technologies such as wind power generation and photovoltaic power generation, and increasing investment in the construction of power transmission channels, it is still far behind the construction speed of power stations. According to the data, as of the end of January 2013, there were 64 grid-connected wind farms in Gansu, with an installed capacity of 6,439,100 kilowatts, accounting for 21.67 of the province's total installed capacity; 40 grid-connected photovoltaic power plants with a total installed capacity of 596,500 kilowatts, accounting for The total installed capacity of the province was 2.01. In 2012, Gansu's wind power installed capacity was the third in the country, but the power generation was only ranked sixth in the country.
Worried about the situation of power cuts or deterioration of current power generation, 60 to 70 can be sent out, the situation will be better in the second half of the year, Jiuquan-Zhuzhou UHV line DC transmission project construction project is expected to get the road this year, the delivery capacity will be greatly Raise, and the government is also increasing local consumption through the introduction of high-energy companies. Shi Yubao, deputy director of the Energy Bureau of Yumen City, Gansu, said.
It will be better, this is the most frequently mentioned words of enterprises and local governments in the survey, but the actual situation is not optimistic. As mentioned above, the head of the 10MW photovoltaic project in Dunhuang, Gansu, China, although the local 330kV grid project will be put into use next year, the installed capacity of Dunhuang can be connected to the grid. But it is not good, because photovoltaic power plants are built too fast.
Although the National Energy Administration has reiterated several times in the past few years, areas with significantly lower hours of wind power utilization may not further expand the scale of construction. However, a large number of wind farms and photovoltaic power plants are still spreading rapidly everywhere. Power station developers hold the dream of the Nuggets, and local governments try to reshape the local economy with new energy. According to the “Twelfth Five-Year New Energy and Renewable Energy Development Plan of Gansu Provinceâ€, it is estimated that by 2015, the installed capacity of wind power in Gansu Province will reach 17 million kilowatts, and the installed capacity of solar power will reach more than 5 million kilowatts.
Under the premise of not effectively improving the capacity of new energy consumption, we should control the scale and pace of the development of Hexi New Energy. Huang Qiang, general manager and deputy secretary of the Party Group of Gansu Electric Power Company, suggested that the scale of new energy construction should be compatible with market consumption capacity and load level. New energy construction should also be connected with the construction of external transmission channels, and finally realize power, power grid and power. The market is coordinated.
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