With the rapid development of distributed photovoltaic, in some provinces in central China, roof photovoltaic has gradually become the main power source, the energy base pattern of these areas then presents the characteristics of "more than three and a half main body", distributed photovoltaic grid-connected scale far exceeds the nearby consumption carrying limit, some counties and counties photovoltaic consumption is limited. On June 4, the State Energy Administration issued the notice on doing a good job in the consumption of new energy to ensure the high-quality development of new energy, which put forward a series of requirements for further promoting the consumption of new energy. As one of the "main forces" of new energy, the consumption of distributed photovoltaics is a systematic project that requires the concerted efforts of all relevant parties.

In recent years, China's new energy installed capacity has developed rapidly. By the end of 2023, the country's cumulative installed capacity of solar power generation was about 0.61 billion kilowatts, an increase of 55.2 percent over the same period last year. Among them, the total installed capacity of distributed photovoltaic reached 254.438 million kilowatts. Under the background of continuous policy support, gradual improvement of technology and continuous improvement of economy, distributed photovoltaic in China shows a trend of large-scale development.

With the rapid development of distributed photovoltaics, the proportion of distributed photovoltaics installed in some parts of China is high, and some problems are accompanied by the development of roof distributed photovoltaics. In some provinces in central China, rooftop photovoltaic has gradually grown into the main power supply, profoundly changing the energy base pattern in these areas, showing the characteristics of "more than half of the three main body", namely: more than half of the new energy installed power supply, more than half of the new energy installed photovoltaic, photovoltaic installed distributed more than half, distributed photovoltaic to rooftop photovoltaic as the main body. Farmers in these provinces have an average roof photovoltaic installation of 20-30 kW per household, while the average household electricity load is less than 2 kW, and the grid-connected scale far exceeds the load limit of nearby photovoltaic consumption. Large-scale reverse transmission of roof photovoltaic is very common, resulting in reverse heavy overload of equipment or reverse power transmission to 220 kV and above power grids, resulting in the problem of limited photovoltaic consumption in some counties and counties.

According to statistics, the roof area of buildings in rural areas in my country is more than 27 billion square meters. Theoretically, about 1.9 billion kilowatts of roof photovoltaic power generation can be installed. At present, the total installed capacity of distributed photovoltaic in the country is 254.438 million kilowatts. This means that the development of new energy in China has just begun, and the potential for the development of distributed photovoltaic power generation is still great. In the next few years, the installed capacity of distributed photovoltaic may double. In addition, the development cost of rooftop photovoltaic continues to drop. For example, by the end of 2022, the bidding range for centralized procurement of photovoltaic modules has been reduced to 0.942-1.32 yuan/watt. In the future, the scale of rooftop photovoltaic grid-connected will have a larger growth rate. It is the general trend that larger-scale electricity will be sent back to the main network with 220 kV and above.

Therefore, the solution of the problem of new energy consumption will directly affect the healthy development of the new energy industry in the future.

On June 4, in order to improve the power system's ability to eliminate new energy, ensure the large-scale development of new energy while maintaining a reasonable utilization level, and promote the high-quality development of new energy, the National Energy Administration issued the ''About Doing a Good Job in New Energy Abatement Work "Notice on Guaranteeing the High-Quality Development of New Energy" (hereinafter referred to as "Notice"). The promulgation of the "Notice" shows that the national level has realized the urgency of solving the problem of new energy consumption. Solving this problem is more conducive to the development of new energy and the construction of new power systems.

The key to the consumption of new energy lies in whether the power grid has the carrying capacity. The ''Notice'' pointed out that it is necessary to accelerate the construction of new energy supporting power grid projects, combine the development plan and project layout of distributed new energy, organize power grid companies to coordinate the preparation of distribution network development plans, scientifically strengthen the construction of distribution networks, and improve the distribution of new energy. Carrying capacity. Establish a project list for the new energy supporting power grid projects that have been included in the plan, and accelerate the preliminary, approval and construction work under the premise of ensuring safety.

Because the new energy has the characteristics of gap and volatility, it is very important to maintain the balance of the power system and make it have a strong system adjustment ability. The "Notice" pointed out that it is necessary to actively promote the improvement of system adjustment capabilities and the coordinated development of network sources. According to the growth scale and utilization rate target of new energy, the demand analysis of power system regulation capacity should be carried out, the improvement plan of power system regulation capacity in the region should be formulated according to local conditions, and the adjustment measures such as flexibility transformation of new coal power, regulation power supply, pumped storage, new energy storage and load side regulation capacity scale, as well as mutual aid between provinces should be clearly defined and implemented. At the same time, it is necessary to arrange the construction of new energy projects in an orderly manner. It is necessary to scientifically arrange the development layout, production timing and consumption direction of centralized new energy in combination with the consumption capacity, guide and urge the municipal (county) level energy authorities to reasonably arrange the development layout of distributed new energy, and strengthen the coordination between new energy and supporting power grid construction.

In the new power system in which new energy has gradually become the main energy, power grid enterprises play a vital role. "Notice" pointed out that to give full play to the role of power grid resource allocation platform. Power grid enterprises should combine the construction of new energy bases to further improve the proportion of new energy transmission channels across provinces and regions. According to the needs of new energy consumption, adjust the operation mode in time, strengthen inter-provincial mutual assistance and expand the consumption scope; Comprehensively improve the measurable and controllable ability of distribution network; Improve the dispatching operation procedures and promote the fair calling and adjustment of various kinds of adjusting resources to give full play; Build an intelligent dispatching system to improve the grid's ability to regulate and control of high proportion of new energy.

These requirements will reposition the role of the grid company. The grid company is not just a simple power "transmission pipeline", but will play and act as a "hub and platform" in the new power system. It is necessary to enhance the ability of inter-provincial mutual aid and resource scheduling, promote the participation of new energy in the power market, and give full play to the role of resource allocation.

The elimination of distributed photovoltaics is a systematic project that requires the concerted efforts of all relevant parties. The competent energy departments of governments at all levels, new energy power generation enterprises and power grid enterprises should perform their respective duties and speed up the implementation in accordance with the spirit of the notice.

In view of the current new situation and new problems in the development of renewable energy, with the goal of high-quality development of new energy, and in accordance with the principle of "overall balance and coordination of quantity and rate", it is recommended to further straighten out the renewable energy consumption mechanism, according to the resource endowment and development reality of each province, Differentiated setting of provincial utilization targets, coordinating the coordinated development of power grids and power sources, promoting shared responsibility for consumption of source, network and load, reducing system comprehensive energy, and promoting sustainable and energy.

First, all kinds of power supply and regulation resources should be arranged as a whole. Coordinate regular power supply and new energy, centralized new energy and distributed new energy, new energy guaranteed grid connection and market-oriented arrangements, take into account inter-provincial power transmission and reception plans, reasonably determine the construction scale, layout and timing of various power supplies and regulating resources, ensure synchronous planning, construction and operation, relieve the pressure of system regulation, improve the carrying capacity of the power grid, and promote distributed photovoltaic and other new energy sources to be connected as soon as possible and quickly as possible.

Second, we should improve the distributed photovoltaic development and construction mechanism. We will improve the management standards for distributed photovoltaic development, give full play to the market-oriented role, guide distributed photovoltaic to reasonably choose development modes, mobilize the enthusiasm of investors to build energy storage, encourage the construction of user-side energy storage systems in areas with high pressure on new energy consumption and obvious load peaks and valleys, improve the local consumption capacity of distributed photovoltaic, and reduce the pressure on power grid access.

Third, we should comprehensively promote the flexibility transformation of active units, make all changes, realize flexible manufacturing of new units, accelerate the transformation of coal-fired power units to basic support and system regulation power supply, focus on improving the deep peak shaving capacity of units, and effectively play the role of thermal power "ballast stone.

Fourth, it is necessary to clearly refine the definition criteria for distributed photovoltaic capacity, improve the access conditions and trading rules for distributed photovoltaic participation in the power market, adhere to a unified platform and unified rules, integrate distributed photovoltaic into the provincial trading platform, standardize participation in market-oriented transactions, and promote the realization of local consumption and balance.

Fifth, to improve the performance of distributed photovoltaic grid-connected technology. Accelerate the formulation and revision of core grid-related standards such as access, acceptance, testing and operation of distributed photovoltaic, implement technical and safety requirements such as distributed photovoltaic power regulation, abnormal response of power grid, power quality monitoring, inverter low voltage ride-through and anti-islanding, lightning protection and grounding, and parallel/off-grid operation, as well as scheduling criteria with large power grid, and improve technical indexes such as voltage/frequency tolerance and safety protection of distributed photovoltaic, strengthen the adaptability and support of the distributed photovoltaic network to ensure safe operation and rapid recovery in the event of system abnormalities or failures.