Power planning in the context of mixed energy

Under the background of the hybrid energy era, in order to do a good job of overall planning for the “13th Five-Year Plan” of electricity, the corresponding solutions should achieve the coordination of the development and utilization of clean energy resources and the development and utilization of traditional fossil energy, and coordinate the coordination of power supply construction and grid planning. The complementary advantages between clean energy and fossil energy, and the integration of power sources, power grids, and users into a single entity, and the implementation of integrated resource planning are reflected in the concept of “regional multi-energy bodies”.

For a long period of time in the future, China will be in a crucial period of advancing the revolution in energy production and consumption. The power industry as a large household of energy consumption and pollutant discharge will further increase its energy-saving and emission-reduction pressures, and macro-control will use electricity slowly. Therefore, energy and environmental protection to meet the needs of the national economy and the development of society as a whole is the overall keynote of the 13th Five-Year Plan for the entire power industry. In the context of the energy revolution and the reform of the power system, the power planning should fully consider the transformation of the energy supply system, that is, the transformation of the traditional fossil energy supply system into a clean energy supply system. This transformation of the energy supply system will require a long “hybrid energy era”.

The 13th Five-Year Plan for Electricity Needs to Be Changed

Since the "Tenth Five-Year Plan" power plan was released, no power plans have been issued during the "Eleventh Five-Year" and "Twelfth Five-Year Plan" periods. Affected by many factors, the situation of out-of-control and failure of power planning in China has become increasingly serious. As part of the energy plan, the power plan must change the fragmentation of many special power plans and regional grid plans during the “12th Five-Year Plan” period and strengthen the overall solution mechanism. Specifically, in the “Thirteenth Five-Year Plan” period, there are three issues that need to be addressed in the entire power industry: first, to strengthen planning and simplify approval; secondly, to further optimize power distribution; and third, to adjust power supply structure.

We believe that in the context of the hybrid energy era, in order to do a good job of coordinating the "13th Five-Year Plan" for electricity, the corresponding solutions must achieve the coordination of the development and utilization of clean energy resources and traditional fossil energy development, power supply construction and power grid planning. The coordination and cooperation, the complementary advantages between clean energy and fossil energy, and the integration of the power supply, power grid, and users into a single entity and the implementation of integrated resource planning are reflected in the concept of “regional multi-energy bodies”. On the other hand, this overall solution needs to be supported by smart grid technologies, advanced transmission technologies, demand-side response technologies, and related energy storage technologies to optimize the allocation of resources between the power supply and the grid, the grid and users, and between the power supply and users. Realize the "source-net-load-storage" coordination optimization model.

"Regional multi-energy body"

It is an inevitable choice to accelerate the transformation of energy reform

“Regional multi-energy body” refers to an integrated energy supply entity that is composed of energy supply main bodies, energy transmission main bodies, and energy consumption main bodies in a certain area, in which various types of energy resources are multi-dimensionally coordinated and interact with each other, and are “power, grid, and load”. The overall coordination and mutual cooperation of specific ways to achieve.

The development and utilization of energy is closely related to the country’s economic and social development, the level of science and technology, and the endowment of energy resources. Under the circumstance that traditional methods cannot solve the problems faced by clean energy development and utilization, the “regional multi-energy body” will become an inevitable choice for accelerating China’s energy transition and coordinating the factors affecting reforms in various energy fields. Mainly reflected in the following three aspects: First, "regional multi-energy body" is an important means to achieve the effective use of clean energy, a variety of energy coordination. Second, the "regional multi-energy body" is a breakthrough in optimizing the overall layout of China's energy and promoting the integration of energy development and utilization. Third, the “regional multi-energy body” is a key entry point for achieving national balance in energy supply and demand and organic coordination of the energy transportation system.

In order to make better use of the “regional multi-energy body” concept and the “source network storage” coordination model and technology, we propose the following suggestions:

First, the grid company will be gradually positioned as a utility-type enterprise, and the overall planning function of the power system will be exercised, and grid companies will implement an integrated resource planning model. The key to solving the problem lies in understanding the essential characteristics of clean energy, and then finding corresponding complementary ways. At present, China's current power system planning and decision-making are too fragmented, and the degree of specialization is seriously insufficient, which causes problems such as uncoordinated power supply and power supply construction, and inconsistent power supply and power grid construction. Therefore, we propose to gradually position the power grid enterprise as a public utility company, implement integrated resource planning, and make overall plans for the overall power system including power supply and power grid planning, so as to achieve the coordination and cooperation of clean energy development and utilization and traditional fossil energy development and utilization, and power supply construction. Coordinating with power grid planning to achieve complementary advantages between clean energy and fossil energy. At the same time, it changed its traditional assessment and supervision mechanism to prevent grid companies from gaining monopoly interests. In this way, the grid companies can get rid of the current unclear positioning flaws, and at the same time make the operation of the grid companies more open and efficient, so as to achieve the coordinated coordination of various energy sources required in the “regional multi-energy bodies” and the coordination of power supply and power grids. .

Second, establish a multi-level and diversified electricity market, and promote the development and consumption of clean energy through market-based measures. At present, large-scale direct purchase of electricity pilots has been carried out in many regions. This kind of bilateral contract transaction mode in which the supply and demand parties directly meet is a power market reform mode that is more in line with China's actual conditions and has certain operability. However, judging from the current pilot conditions, clean energy is not competitive in the market, and some provinces even specify that only large users of thermal power purchase electricity directly, which is obviously not conducive to the development of clean energy in the future. Therefore, we propose that in the process of power market reform, all peak shaving resources, including the power supply side, grid side, and load side, should support the efficient development and use of clean energy through the establishment and operation of an electric auxiliary service market. Coordination between the various power supplies.

Third, accelerating the development of demand-side response resources and establishing a coordinated operating mechanism for fossil energy and clean energy, making a system with two-sided random fluctuations a more stable and controllable system.

Introduce integrated resource planning concepts and methods

Judging from the current situation in China, in order to implement the “13th Five-Year Plan” energy development plan of “economies, cleanliness, and safety” and implement the “four strategies of energy conservation priority, based on domestic, green and low-carbon, and innovation-driven”, we cannot ignore the era of hybrid energy. This important transition period. At this stage, the integrated resource planning concepts and methods were introduced into the specific work of power planning. At the same time, power demand side management and demand side response work were vigorously carried out to make full use of the “regional multi-energy body” concept and the “source network storage” coordination model. Technology is the work that needs to be carried out at present, and it is also the focus of energy system emission reduction work in the future.

It should be pointed out that at present, China’s system is not conducive to the implementation of an integrated resource planning model. The concept of integrated resource planning in power planning requires top-level design and related policy support. The existing institutional mechanisms also need to make major changes. Such as the reform of energy-saving emission reduction monitoring model, modify the regulatory system, reorganization of regulatory agencies. At the same time, all departments can't do their own thing and should be optimized as a whole, so as to better promote the transformation of China's power planning and ensure the continuity and permanence of power planning.