Source: China energy newspaper 2017/11/22 9:29:26

The national development and Reform Commission, the National Energy Bureau issued prior to "solve water abandoned abandoned abandoned light wind problem plan" (hereinafter referred to as the "program" ") proposed to 2020 nationwide to effectively solve the problem of water abandoned abandoned abandoned light wind. The requirement to strengthen the power grid construction in key areas of renewable energy development, accelerate the southwest and the "Three North" area of renewable energy power allocation of inter provincial transmission channel planning and construction, to give priority to the construction of renewable energy transmission and the transmission channel terminal area has the consumptive market space. At the same time, we should give full play to the role of the key platform of the power grid by giving priority to improving the role of the key platform of the power grid through improving cross regional renewable energy power dispatching technology support system, optimizing the dispatching operation of the power grid and improving the efficiency of the existing transmission channels, and giving priority to the transmission of hydropower, wind power and solar power.

The task of air pollution prevention and control "four exchanges and five straight" UHV construction tasks will be completed next year

"Plan", 2017, "Three North" production area in northern Shanxi - Nanjing, Jiuquan - Hunan, Ximeng - Taizhou, zarud - Qingzhou HVDC project, Southwest Sichuan and Chongqing third channel operation. As of now, the channel construction task this year basically completed, in addition to zarud - Qingzhou HVDC project, other power grid channels have been put into operation, zarud - Qingzhou HVDC project is charged debugging, will be officially put into operation, will be able to finish the "program" requirements of the production tasks.

At the same time, according to the "plan", 2018, "Three North" production area in southern Anhui, Shanghai Zhundong - Temple - Shandong HVDC project put into operation, the southwest northwest of Yunnan - Guangdong HVDC project. Among them, the Shanghai temple Shandong Northwest Yunnan Guangdong DC project is the national air pollution control action "four to five straight" UHV project, and other UHV projects have been put into operation on schedule. Previously, according to the relevant plans, the national air pollution control action plan "four to five straight" UHV will be completed in 2017. The plan shows that the plan is delayed.

In this regard, stakeholders south network, the company is to speed up the Northwest Yunnan Guangdong UHVDC project construction, is expected to end this year can send electricity form according to the plan, before the completion of all next year. At that time, the capacity of "west to east transmission" in Yunnan will increase to 31 million 150 thousand KW. Reporters from the day before the Shandong province electric power company also confirmed that, for various reasons, Shanghai temple - Shandong HVDC project can be put into operation next year.

Jiangxi is the only province without high pressure drop point in Central China

"Plan", "13th Five-Year" late accelerate Sichuan hydropower fourth back to the transmission channel and Wudongde Hydropower Station, Baihetan Hydropower Station and the upper reaches of the Jinsha River hydropower transmission channel construction. Not long ago, the national development and Reform Commission and the National Energy Board issued the "Circular on promoting the southwest hydropower consumptive" (hereinafter referred to as the "notice" requirements "). "Notice" clearly, China, South to Guangdong power transmission network transmission project in Guangxi Jiangxi UHVDC project, Wudongde hydroelectric station to send as soon as possible outside of Sichuan hydropower.

As of now, Sichuan power delivery channels are Xiangjiaba - Shanghai, Jinping - South of Jiangsu, Xiluodu - Western Zhejiang three + 800 thousand volt DC HVDC transmission project, the previously planned (Ya in the middle reaches of the Yalong River hydropower station, Sichuan hydropower project) fourth delivery channels for various reasons failed to start. There was news that ya DC placement is Jiangxi, but not the parties agree, such as the Jiangxi development and Reform Commission had said: "in 13th Five-Year, Jiangxi province has not received electricity into Jiangxi space museum."

Reporters after carding found, Jindongnan - Nanyang - Jingmen exchange project landing Hubei, Xiangjiaba Shanghai HVDC project and Huainan - Zhejiang - Shanghai, Huainan - Nanjing - Shanghai - Jinping exchange project landing Shanghai, South of Jiangsu, Shanxi, Ximeng - Jiangsu - Taizhou HVDC project landing Jiangsu, Xiluodu - Western Zhejiang, East Ningxia Zhejiang - Zhejiang HVDC project landing, Hami South - Zhengzhou HVDC project landing in Henan, Zhejiang - Fuzhou exchange project landing Fujian, Jiuquan - Hunan - Hunan HVDC project landing, put into operation next year in Zhundong HVDC project placement Anhui and Jiangxi is at present, not only the Middle East China UHV placement provinces.

The Southern Network insiders, the company will accelerate the Wudongde hydroelectric station power supply Guangdong, Guangxi UHV DC three terminal project, and strive to the end of this year to obtain the project approval and construction, the formation of the power transmission capacity by the end of 2019, 2020 completed and put into production. At that time, the capacity of "west to east transmission" in Yunnan will increase to 39 million 200 thousand KW.

Improving the capacity of UHV to deliver renewable energy is a system engineering

Practice has proved that UHV in China is playing an increasingly important role in promoting large-scale renewable energy delivery consumptive. Transport hydropower, summer Xiangjiaba - Shanghai, Jinping - South of Jiangsu, Xiluodu - Western Zhejiang three UHV DC transmission project in full power operation for fourth years, in the southwest hydropower power consumptive send large-scale at the same time, guarantee the load center in East China electricity demand.

But at the same time, due to the presence of inter provincial barriers related to power production lag, UHV "tonic weak diplomacy problems, power market mechanism in our country is not perfect, cross regional power trading and electricity demand growth slowed, partly by the end of the provinces to accept calls outside the region is not active and other factors, resulting in some UHV without full power operation renewable energy and transportation limited.

Jiuquan - Hunan HVDC project as an example, the National Energy Bureau "on the support of Gansu province to create a new energy comprehensive demonstration zone reply" clear requirements, to ensure that the Jiuquan - Hunan HVDC project in conveying new energy electricity accounted for more than 40%. And the relevant people of the State Grid said, "because the power supply of the sending terminal is not yet put into operation, and this year's Hunan hydropower and big business" and other factors, the power transmission level of the wine lake UHV has not reached the maximum transmission capacity of the design. In this regard, the "program" clear, "13th Five-Year" on improving the transmission capacity of Hami - Zhengzhou, Jiuquan - Hunan to transport renewable energy as the main function of the UHV transmission channel.

In addition, as a series of supporting measures, "plan" also requires the national network, South network power companies to jointly share relevant information, the formation of a national renewable energy power generation and transmission, with the deployment of monitoring platform, improve inter regional renewable energy power dispatching technical support system for joint operation; operation system to carry out cross fire and water scenery across the valley the implementation of various energy balance; fully tap the existing inter provincial transmission channel transport capacity to meet the safe operation of the system, by the end of the region with the premise of electricity demand, reduce network redundancy, improve the operation efficiency and management level of the line, the actual transmission of renewable energy power carrying out monitoring and evaluation...... Through these measures, the problem of abandoning the wind and abandoning the light is effectively solved throughout the country in 2020.

At the beginning of China's UHV development due to the economic and security problem is controversial, after years of construction in the operation of the "eight veteran, pay ten straight UHV, but because part of the project will not run at full capacity questioned.

As we all know, in addition to pumped storage, the power system is still difficult to store in a large scale, and the power system's hair, transmission, change, distribution and use need to be balanced in real time. In addition, the power grid and power supply to support, strong grid grid, perfect trading mechanism and other conditions, can ensure the efficient operation of the transmission channel. Therefore, some projects do not operate at full capacity, which is just a representation of the imbalance in economic and social development at present stage, which does not affect the actual demand and Prospect of UHV power grid construction. The power construction itself should be moderately ahead of itself, and the cost risk of the Middle East load area is obviously higher if it does not have a high pressure in the Middle East. Of course, the voice of opposition is not necessarily a bad thing, and the dispute can promote the UHV power grid to move forward better and healthier.