Power system is one of the most important achievements in the history of human engineering science. It is a power production and consumption system consisting of power generation, transmission, substation, power distribution and electricity. It converts natural primary energy into mechanical power through mechanical energy devices. The power is supplied to each user through transmission, substation and distribution.
The scope of the pilot program for power-assisted services is expanding. A fair, transparent and competitive market-based auxiliary service sharing and sharing mechanism is taking shape. Energy storage equipment, demand side resources, and third parties are encouraged to participate in the provision of power-assisted services for new energy consumption. Electricity market transactions and the development of emerging industries have brought positive effects. Some experts also believe that China's power-assisted service market is still gradually exploring, pricing and trading mechanisms are still not perfect, many companies have a wait-and-see mood, must adhere to market-oriented reforms, summarize and improve relevant norms, and further promote the optimal allocation of power resources.
After more than five months of preparatory construction, the trial operation of the Ningxia electric power auxiliary service market was officially launched recently, marking a new stage in Ningxia's power system reform and power market construction, for new energy consumption, electricity market transactions, and emerging industry development. Produce a positive boost.
It is understood that as the country's first comprehensive energy demonstration zone, Ningxia's new energy has developed rapidly in recent years. Up to now, the installed capacity has reached 15.96 million kilowatts, including 9.76 million kilowatts of wind power and 6.2 million kilowatts of photovoltaics, accounting for 40% of the installed capacity of the system. The peak voltage of the power grid has increased year by year.
According to data from the Prospective Industry Research Institute's "China Power Industry Market Prospects and Investment Strategic Planning Analysis Report", in 2016, the total investment of major power companies nationwide increased by 3.3% year-on-year. Under the guidance of the national distribution network construction and transformation action plan and the new round of rural power grid transformation and upgrading, power grid investment increased by 16.9%.
Source: Prospective Industry Research Institute
Since the beginning of this year, all provinces and autonomous regions in China have been actively promoting the construction of ancillary services market. According to the National Energy Administration's “Work Plan for Improving the Compensation for Electric Power Auxiliary Services (Market) Mechanism†in November 2017, China's power auxiliary service compensation (market) work is implemented in three phases, the first phase (2017-2018): perfect Existing relevant rules and regulations, implement the relevant requirements of relevant relevant documents, strengthen supervision and inspection, and ensure fairness and fairness. The second stage (2018 ~ 2019): Exploring the establishment of a power-assisted service sharing and sharing mechanism involving the participation of power users in medium- and long-term transactions. The third stage (2019 ~ 2020): cooperate with the spot trading pilot to develop the power auxiliary service market.
Up to now, the state has approved the pilot projects of auxiliary service market construction in Northeast China, Fujian, Shandong, Shanxi, Xinjiang, Ningxia, Guangdong, Gansu and other places. The northeast auxiliary service market has been officially operated for more than two years, and markets such as Shandong and Fujian have also been established. Entering the trial operation, Gansu officially opened on April 1 this year.
Recently, the East China Energy Regulatory Bureau held a special meeting and proposed that the next step will be to combine the actual conditions of East China and Shanghai to continue to promote the construction of power auxiliary service market in East China and Shanghai, further improve the market-oriented trading mechanism, and ensure the smooth start of the power auxiliary service market in East China and Shanghai.
Auxiliary service market construction is an important part of power market reform. It refers to grid-connected generator sets, adjustable load or electric energy storage devices. According to the peak demand of power grid, smooth and stable adjustment of unit output or change unit operation status or adjust load The services provided.
China's power auxiliary service market began in 2006, and the former State Electricity Regulatory Commission issued the Interim Measures for the Administration of Auxiliary Services of Grid-connected Power Plants in November of that year. In 2014, the National Energy Administration issued the “Notice on Actively Promoting the Construction of Inter-provincial Inter-regional Power Auxiliary Service Compensation Mechanism†to include cross-provincial cross-regional trading power in the scope of power-assisted service compensation mechanism.
In recent years, China's power supply capacity has been generally surplus, and the utilization hours of coal-fired power units have gradually declined. Some areas have abandoned wind, abandoned light, abandoned water, nuclear-limited and system peak-shaving, and heating season heat-contradictory issues. Part of the compensation method for power-assisted services has been difficult to adapt to actual needs.
To this end, the National Energy Administration issued the "Working Plan for Improving the Compensation for Electric Power Auxiliary Services (Market) Mechanism", proposing to achieve full coverage of the power auxiliary service compensation project, encouraging the use of competitive methods to determine the power auxiliary service to undertake the unit, and encouraging energy storage equipment and demand side. Resources participate in the provision of power-assist services, allowing third parties to participate in the provision of power-assist services.
Recently announced the "National Energy Bureau Comprehensive Department's Circular on the Relevant Situations of Power Auxiliary Services in the Fourth Quarter of 2017" shows that in the fourth quarter of 2017, 30 provinces (autonomous regions, municipalities, and regions) outside the Tibet and Mengxi regions participated in power assistance. There are 3,123 power generation enterprises with service compensation, with a total installed capacity of 1.163 billion kilowatts, and compensation expenses totaling 3.518 billion yuan, accounting for 0.81% of the total on-grid electricity charges.
According to the relevant relevant circulars, the number of power generation enterprises involved in power auxiliary service compensation in the second and third quarters of 2017 was 2,725 and 2,972 respectively, and the compensation expenses were 2.819 billion yuan and 3.09 billion yuan respectively, accounting for 0.76 of the total on-grid electricity charges. % and 0.72%.
The "Economic Information Daily" reporter noted that while the total compensation costs have increased, the performance of different regions has also changed. In the last three quarters of 2017, the highest compensation costs have been in the northwest region, with latecomers in the northeast and south regions ranking second and third in the fourth quarter.
In addition, from the structural point of view, peaking compensation, automatic power generation control and backup compensation costs account for more than 90% of the total compensation costs. However, the compensation cost structure of each region also has its own distinct characteristics. Taking the situation in the fourth quarter of 2017 as an example, the peaking compensation is the highest in the northwest and northeast, and the automatic power generation control compensation is the highest in the northwest and north China, and the standby compensation is the highest in the northwest and south. Overall, the auxiliary services in the northwest region are the most compensated.
The accelerated development of China's power auxiliary service market will provide good development opportunities for the development of new energy and energy storage industries.
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