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(Source: Zhejiang Electrician Author: Huang Lin)
As a field where both power supply and demand directly interact widely, it is the main platform for realizing the “supply and demand coordination” of new power systems. How should power distribution network reform and break the deadlock?
Distribution network welcomes “new foot color”
Distribution network refers to a power network that receives power from a transport network or regional power generation factory, and is distributed on site through distribution facilities or at a level according to voltage. In our country, it refers to local networks such as 110 kV and below voltage level and 220 (330) kV and below voltage level industrial parks (economic development zones).
With the construction of a new power system, the distribution network is becoming increasingly close to the “dual carbon” goal and the development of high-quality renewable power. Since 2024, the heavy policies of the distribution network have been intensively deployed, and the distribution network has slowly come to the focus light. In February 2024, the National Development and Reform Commission pointed out in the “Guiding Opinions on the Development of High Quality of Distribution Networks under New Circumstances” that the Sugar baby baby should promote the transformation of distribution networks from traditional “sourceless” single to radial networks to “active” dual-directional interaction systems, and in terms of performance, the transformation of distribution networks from a single distribution service body to the efficient setting of the load resource of the source network. This is the country’s proposal to build a new constructionSugar daddy type power system, the national ministries and commissions first guided the construction of distribution networks based on official documents.
In July 2024, the “Action Plan for Accelerating the Construction of New Power Systems (2024-2025)” issued by the National Development and Reform Commission, the National Power Bureau, and the National Data Bureau proposed that nine special operations including high-quality development actions of power distribution networks should be carried out.
In August of the same year, the National Bureau of Dynamics issued the “Planning for High Quality Development of Distribution Networks (2024-2027)”, marking the opening of a new stage of high quality development of my country’s distribution networks. The “Plan” requests to tightly cover the construction of new power systems, accelerate the promotion of a number of network construction reform tasks, and realize the intelligence of distribution networks, and meet the large-scale development requests such as distributed new power and electric vehicle charging facilities.
<p The frequency support of the policy has provided strong vitality for the development of distribution networks and has also brought distribution networks a serious development opportunity. Of course, we should also see new requests, new tasks and new challenges that distribution networks have in new shapes.
Power transformation is one of them. With the rapid advancement of new power systems with high quality and accelerated promotion, distributed photovoltaics has become an indispensable force in power supply. The popularity of distributed power generation facilities at home, enterprise and community levels has increased rapidly, not only realizing the self-sufficiency of users’ side energy demand, but also promoting the Internet of surplus power.
Data shows that as of December 2024, the national photovoltaic power generation capacity reached 886 million kilowatts, a year-on-year increase of 45%, of which 375 million kilowatts were distributed. In 2024, the national photovoltaic power generation application rate was 96.8%.
Let’s look at another set of data. In 2024, the wholesale sales of my country’s new power passenger cars will be 1.302 million. escort, a year-on-year increase of 37.5%, and a wholesale transmittance rate of 49.Sugar baby4%, which is 9.1 percentage points compared with the same period in previous years. It is expected that the highest electricity required for charging new power vehicles in 2030Sugar daddyThe burden is unsatisfactory and cannot reach 100 million kilowatts.
The rapid development of “new feet” such as distributed renewable power and new power cars has led to continuous improvement in the proportion of distributed power consumption, the proportion of new power consumption in new power. By this, the distribution network that “the first to wrap the cat up: “Give it to me.” kilometers” that connects new power to the new power.
“New foot color” brings new problems
From the village road to the city streets and alleys, from the mortals to the building factory, the distribution network “uploading and downloading” is the “last mile” of power transmission, with multiple points and many reasons for uncontrollable reasons.
The most direct feature is that the distribution network has transformed from a traditional “sourceless” network to an “active” network. Traditional distribution networks are importantly responsible for a power-transmitted color, delivering the upper-level power supply to users at a certain point, while the distribution network under the new power system is completely different.
“When the distributed photovoltaic power that is enriched after self-sufficient is transferred to the major power network, the distribution network at this time has changed from the color of the energy transmitter’s head to a power supplier, that is, the distribution network also has a power supply. From the original single channel of the power transmitter has changed into a Sugar daddy a double-way channel with both return and return. “Lin Ling, a network planning room at the Internet Planning Office of Zhejiang Research Institute, said.
The new power electric vehicles are the same, and they can also be charged with electricity to provide the color of the people’s hair. Especially during the period of tightening during peak summer and peak winter, the electric vehicles can release electricity to the network and use the electric vehicles to relieve the negative time of the Hecen-Law period.
For this reason, on the one hand, we should see the environmental friendliness of these new subjects and new industries under the “dual carbon” target landscape, and ensure the supply of electricity during the use of electricity..net/”>Sugar baby‘s influence. On the other hand, we should also see that the connections of these new subjects and new industries are concentrated in the distribution network, and the inappropriateness of the distribution network has already appeared.
In June 2023, the National Bureau of Dynamics launched a survey on the remaining distributed photovoltaic connection network capacity of six provinces. The results show that except Zhejiang, other provinces have experienced difficulties in network concurrently.
But Zhejiang is not a shame for no future. Under the strong promotion of the country’s “Thousand Country Village Wind Campaign” and the “Photovoltaic+” campaign in Zhejiang Province, the development enthusiasm of photovoltaics in Zhejiang, especially distributed photovoltaics, has not decreased. As of the end of January this year, the distributed photovoltaics in Zhejiang exceeded 80% of the 47.27 million kilowatt photovoltaics in Zhejiang Province. According to the National Bureau of Dynamics’ evaluation standards for the bearing capacity of distributed photovoltaic power networks, 18 out of 90 counties (regions and cities) in Zhejiang Province, href=”https://philippines-sugar.net/”>Escort County has no new distributed photovoltaic connection space.
The growth and heat of new power vehicles has not decreased. At present, Zhejiang’s new power vehicles have exceeded 3 million, ranking second in the country; the cumulative number of public charging buses has been built 190,000, which is the country’s leading position.
The large-scale growth of new elements such as distributed photovoltaics and new power vehicles can cause the distribution network to fail to keep up. In addition, when these new bodies are connected to th TC:
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