Energy is an important material basis for human survival and development. Nowadays, energy and environmental issues are becoming more and more prominent, which seriously threatens the sustainable development of mankind. In the context of global climate change and energy shortages, people are looking for renewable energy resources that can be continuously used while cleaning and pollution-free, such as water, wind, solar, biomass and ocean energy. Relying on communication information, internet, and control technologies to effectively coordinate and utilize resources to solve problems. However, the solution to the energy problem is not achieved by simply increasing energy supply and improving energy efficiency, but requires comprehensive change.
This change requires a deep integration of energy flow and information flow to create a new energy system that forms an innovative form of energy application. Renewable energy provides energy supply for new energy systems, while the development and maturity of information and communication technologies provide support for the use of renewable energy. With the advancement of the industry and the constant development of new energy demands in the process of social development, the third industrial revolution occurred in this situation.
What is the energy internet?There are three types of understanding of the energy Internet: one is the global energy Internet, which uses the UHV as the backbone, and the model of establishing a strong smart grid through long-distance transportation of renewable energy, represented by the State Grid; the second is Internet + energy, BAT + national network, Huawei and Vision Energy; the third is the regional energy Internet that can complement each other. At present, the National Energy Administration has issued a pilot notification notice.
Drawing on the Uber style, Vision Energy is digitizing, productizing, and softwareizing energy, and using the advantages of the Internet to regulate uncertain, intermittent, volatility, and distributed renewable energy. Currently, Shanxi Guangling Wind Farm has been implemented. The western plains of Illinois, USA, will soon be connected to BazeField, Europe's largest renewable energy software company, and more than 28,000 public charging piles in North America.
Zhiguang Electric currently has more than 30,000 specialized users in Guangdong Province. The company plans to cover 37,000 customers in three years, obtain special capacity of more than 23 million kVA, provide comprehensive basic services and value-added services, and combine electricity. Data cloud platform and demand mining, to build a large-scale electricity service platform for offline services and online data connectivity, further develop follow-up value-added services, and promote diversification of service content and profit models. According to the 50,000/year basic operation and maintenance cost of a single customer, it can contribute a total of 1.85 billion yuan in revenue and over 200 million profit. At the same time, the follow-up value-added services have various modes of realization, including energy-saving and electricity sales. For example, 23 million kVA means that the electricity sold after the sale of electricity is over 30 billion Kwh per year. Assuming that the profit of single-degree electricity is around 1 cent, it can contribute. About 300 million profits.
1. Renewable energy as the primary primary energy source;
2. Support the access of ultra-large-scale distributed generation systems and distributed energy storage systems;
3. Realize wide-area energy sharing based on Internet technology;
4. Support the electrification of the transportation system.
The concept of energy Internet is new and wide-ranging. It is currently in the early stage of construction planning and there is no system solution. The text considers the important construction components of construction and implementation from new energy, communication technology and extended load management (construction needs to be integrated and expanded according to actual conditions). First of all, new energy development, that is, on the basis of the existing traditional energy supply system, using new energy technologies to achieve access and application of energy production devices, information collection devices, storage devices, etc., to promote local production and consumption of new energy sources. To improve the penetration rate of clean energy; as the basic support of the third industrial revolution, information and communication technology belongs to the infrastructure category, which is not only the necessary foundation for the extensive access of large-scale renewable energy and small distributed energy, but also the grid and users. The necessary support for the linkage between the two; the power load unit as the energy end of the Internet, is the energy consumption end, its intelligent, interactive management can achieve efficient use of clean energy and energy saving.
(1) Distributed photovoltaic and microgrid construction
Regional multi-microgrid construction, including nested microgrid, low-voltage optical microgrid and multi-point photovoltaic grid connection. The nested microgrid is co-supplied with other forms of energy (including hot and cold), and is equipped with energy storage to supply fixed loads. The low-voltage optical storage microgrid is equipped with photovoltaic installation capacity of the same specifications as load and energy storage. Quantitative recycling; multi-point photovoltaic grid connection is to choose to connect photovoltaic power generation to the user's incoming line, or to build centralized energy storage under the substation, and to connect to the low-voltage distribution bus.
(2) Energy storage
The small-scale distributed energy storage control system is installed, the energy storage frequency modulation and peak shaving technology is applied, and the island operation technology of the distribution network is used to buffer the new energy input, improve the overall operation safety and economy of the power grid, and cooperate with the realization of new energy multi-scenario applications. In addition, in the event of a disaster, the "power router" stores power through the circulating battery to prevent power outages in the area.
(3) Research and development of distributed power plug-and-play interface devices
Develop distributed power plug-and-play interface device, integrate inverter device, metering device, protection device, filtering device and communication module, and use carrier, WIFI and other communication methods to realize interaction with smart home network and (smart home) To realize the transmission of information such as power generation information, identity authentication, and power billing.
(4) Distributed Power Plug and Play Management System
The main functions of the system include management and verification of user information, distributed power generation monitoring and evaluation, and user billing management. Based on the smart home network, it realizes monitoring, management and power settlement of the distributed power access device of the user. Realize the user's power generation, electric card identification and other information to interact with the marketing business system to achieve the user's power settlement.
(1) Multi-service bearer based on fiber network
Based on the power grid infrastructure, on the basis of distributed power supply access, power consumption information collection, smart home and other power-using services in the existing fiber-optic network area, it carries power distribution services such as distribution automation and distribution network coordination control. .
(2) Multi-micro network coordination management system
Through the coordinated optimization operation technology of regional multi-microgrid in multiple networking modes such as nesting, parallel and distributed multi-point access, the dynamic optimal networking and multi-objective optimization of regional multi-microgrid are realized. Among them, based on power generation and load demand forecasting under normal operating conditions, combined with a variety of distributed power sources, energy storage and load control, achieve optimal energy management of regional multi-microgrid, improve distributed energy consumption ratio, and improve multiple energy sources. Comprehensive utilization efficiency. The dynamic optimal networking technology adopted in the case of faults realizes complementary coordination of multiple microgrids and quickly restores power supply to important users. Effectively support the dynamic collaborative optimization goal of multi-microgrid in the region. Meet different energy optimization needs that take into account regional comprehensive energy efficiency, distributed energy consumption, user distributed power consumption, and economic benefits.
(3) Energy storage control system
Select a distributed lithium-ion battery in a region with high energy consumption to form a small-scale energy storage system, realize a multi-point joint control mode for decentralized lithium batteries, and realize the function of frequency modulation and peaking; at the same time, upload data to the control center, and the control center The depth peaking FM command is sent to the stored energy in combination with the overall operation.
(4) Comprehensive energy display
According to the regional characteristics and the structure of the distribution network, combined with the requirements of response and energy efficiency analysis, numerical weather prediction and power prediction, the coordinated operation and comprehensive display of multiple energy sources in the region can be realized.
(1) Energy efficiency analysis of residential users
The system can establish the energy efficiency model of the main energy-using equipment, comprehensively analyze the user's energy load, power quality data and energy consumption data to achieve comprehensive evaluation, analysis and comparison of user energy use; provide cost-effective energy-using strategies to guide users Continuously improve energy use. At the same time, the user can formulate a control strategy suitable for his own power consumption through the system. The system will realize the control of the power equipment according to the control strategy, and realize the closed-loop optimization control of energy efficiency.
(2) User side demand response
On the basis of commercial buildings, industrial enterprises, and energy efficiency control facilities for residential users, the system optimizes and coordinates control interactions with multi-energy, and obtains the capacity that needs to be regulated. According to different types of users, the power generation mode is dynamically coordinated and optimized. The predetermined strategy is adjusted to effectively reduce the peak load. The system manages the user's demand response, and responds to the user's demand response time as the main reference for compensation.
(3) Family Energy Efficiency Center
In the home indoor distribution box to build a smart home energy center, equipment integration with electricity metering, intelligent home gateway module, WIFI communication module, etc., to achieve household electricity consumption total metering, split metering, plug-and-play photovoltaic power generation metering; indoor household WIFI coverage and power line communication network coverage, to achieve three-table copy; smart home and other smart home functions, while achieving home energy efficiency management, smart home services, scanning payment, four network integration and other services.
(4) Electric vehicles
Construction of electric vehicle charging and replacing facilities in public transportation stations, residential quarters, commercial centers, etc., construction of AC charging piles and electric vehicle fast charging facilities and integrated charging piles, construction of electric vehicle charging service network, and public service platform in electric vehicles Information hubs in related fields and driving support functions to maximize the value of information.
1, integrated mode
The stock assets are purchased or leased by the project company. The incremental assets are all held by the project company with exclusive investment. They have the overall operation right of energy placement and assume responsibility for safe operation and energy guarantee.
2, platform mode
As the main operation entity of the project, the project company can, according to the actual situation, deliver the power supply, cold and heat source facilities, energy substitution, storage and even partial electricity sales business within the planned scope to other parties with advantageous conditions through legal procedures. All parties are investing and constructing. In terms of operations and transactions, they shall bear corresponding rights and responsibilities according to market planning. According to the agreement, the cooperation of the system in various states is guaranteed under the support of the Internet technology.
3, PPP mode
The public sector and social capital cooperation model has three characteristics: partnership, benefit sharing and risk sharing.
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