“To achieve the goal of maximizing consumption of clean energy, clean energy consumption is the most important scheduling constraint second only to grid safety.” On May 28, China Southern Power Grid Corporation officially released the 2018 Clean Energy Dispatching Work Plan of China Southern Power Grid Corporation. "" Southern Power Grid Clean Energy Dispatching Operation Rules (Trial)" (hereinafter referred to as "Program" and "Rules" respectively), from the scheduling operation level, formulated 41 specific measures to eliminate clean energy, fully implement the national and company cleaning The demand for energy consumption drives the energy production and consumption revolution. This is the first time that China Southern Power Grid has institutionalized and standardized clean energy dispatching work.

The relevant leaders of the Economic Development Bureau of the National Development and Reform Commission and the New Energy Department of the National Energy Administration believe that the "plan" and "rules" prepared by China Southern Power Grid are "detailed and thoughtful", and the institutionalization and standardization of clean energy dispatching has been carried out nationwide. In the forefront, the relevant measures are highly operable and strong, reflecting the determination of the Southern Power Grid to resolutely implement the decision-making arrangements for the clean energy consumption of the Party Central Committee and the State Council.

Digging deep into clean energy consumption space based on the principle of maximizing social welfare

It is the spirit of China Southern Power Grid Corporation to implement the internship in the new era of socialism with Chinese characteristics and the spirit of the 19th National Congress of the Communist Party of China. Study and implement the spirit of the two sessions of the National Congress, help to fight the battle against pollution, consolidate the achievements of the blue sky defense, and practice New development concepts, promote high-quality development, and actively build concrete measures to clean low-carbon, safe and efficient energy systems.

For a long time, due to the different demands of various subjects, there is a certain contradiction in the elimination of clean energy. And how much clean energy can eventually be consumed depends on power dispatching.

Statistics show that by the end of 2017, China's renewable energy power generation capacity reached about 656 million kilowatts, the newly installed capacity in the past five years accounted for about 40% of the world, hydropower, wind power, solar power installed capacity are ranked first in the world; Clean energy is developing rapidly. The installed capacity and power generation in 2010-2017 accounted for an average annual increase of 22.6% and 18.9%.

The person in charge of the company's system department introduced that the core of the "plan" and "rules" formulated this time is to solve four types of relationships, namely how to deal with clean energy consumption and grid security, social benefits and corporate benefits, national policies and local governments. The four types of relationship between requirements, dispatch execution and market transactions clarify the general principle of ensuring the security and stability of the large power grid, actively fulfilling social responsibilities, adhering to local local interests and obeying the overall interests of the country, and ensuring strict compliance with dispatch discipline. Clean energy production, clear direction, and provide "core power."

The "Rules" clarify that it is necessary to play the role of the Southern Power Grid resource platform and flexibly adjust the transmission and reception according to the actual conditions of the system operation. Zeng Kaiwen is a dispatcher of the power regulation center of Guangdong Power Grid Corporation. He told reporters that in the Fengshui period, the hydropower generation in Meizhou, Guangdong Province is large, but the electricity load in Meizhou is low, and the local is not enough to absorb so much hydropower. In order to avoid abandoning water, the dispatcher will reduce the output of non-clean energy generator sets in Meizhou, so that non-clean energy generator sets will be less energized to ensure that clean energy can be fully consumed.

“When the channel is used up and the thermal power has been operated in the minimum mode of ensuring safety and ensuring heat supply, all kinds of clean energy power generation plan arrangements should be arranged according to the principle of maximizing social welfare.” The “Rules” clarify that clean energy should be used. The goal of maximizing consumption is to adjust the power transmission plan. In addition, detailed measures have been taken from the aspects of grid-connected management, maintenance arrangements, peaking and backup, and safety and security, and further deepening the clean energy consumption space.

Pre-cure Tengku initiative to explore clean energy dispatch marketization solutions

The relevant person in charge of the company's system department said that the company will continue to promote the role of the market in resource allocation, achieve full utilization of clean energy in a competitive market-oriented way, further improve transaction flexibility, and guide market transaction results to gradually approach clean energy maximization. Absorb the target. At the same time, accelerate the construction of the spot market and the construction of the peaking auxiliary service market to provide market-oriented solutions for clean energy dispatch.

Liu Chunxiao, one of the main compilers of the "Rules" and the head of the system department of the company, said, for example, that the market transactions have been cleared, but the sudden increase in incoming water or the grid load is significantly lower than expected, which may lead to a significant increase in abandoned water. Under the circumstance, the dispatching agency can make reasonable scheduling according to the goal of maximizing consumption of clean energy, and the deviation power generated afterwards is settled according to the corresponding deviation rules.

The series of measures in front of Tengku became an effective measure for the Southern Power Grid to eliminate the floods in flood season. This time it was revised into a system to be solidified. The "Rules" clarify that the main reservoirs of surplus hydropower provinces need to be reduced to the vicinity of the dead water level before the flood, and in the flood season, they should be arranged according to the principle of minimizing the total amount of abandoned water. Through this measure, China Southern Power Grid will ensure that the capacity of the largest capacity will be vacated before the annual flooding, laying the foundation for the hydropower development in flood season.

"As of June 3, the main main reservoirs of China Southern Power Grid, Longtan and Xiaowan, have disappeared to the dead water level. The stagnant water level is only 1.7 meters away from the dead water level. It is expected to fall to the dead water level before June 6." Wu Huijun, director of the department, said that the flood season in the southern region is generally from June to October. In order to maximize the consumption of hydropower in the west, the company will find ways to retreat before the flood season and complete the maintenance of important passages from west to east. To lay the foundation for the hydropower development in flood season. At present, China Southern Power Grid's hydropower storage capacity of the whole network is 5.6 billion kWh, a year-on-year decrease of 3.4 billion kWh. In accordance with the principle of “guarantee safety, guarantee supply, and protect consumption”, we are fully prepared for the upcoming flood season and promote clean energy consumption.

At present, China Southern Power Grid Corporation has formed 18 “500 exchanges and 10 direct currents” with a total of 18 500 kV and above west-to-east power transmission channels. The maximum power transmission capacity exceeds 47.5 million kilowatts, and the annual power transmission exceeds 200 billion kilowatts. At the time, it accounts for one-third of the electricity in Guangdong Province. As of the end of 2017, China Southern Power Grid's clean energy installed capacity reached 149 million kilowatts, accounting for 52.6% of the total installed capacity, clean energy power generation was 488.79 billion kWh, accounting for 51.1% of the total power generation, far higher than the national level (national clean energy installed capacity) The proportion of power generation is 38.7% and 30.4% respectively.

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