In order to promote the intelligent and market-oriented development of the power system, virtual power plants have emerged due to their ability to optimize resource allocation, enhance grid stability, and reduce energy costs.

Response to the "Electricity Demand Side Management Measures"Accelerating the construction of a new type of power systemA series of policy documents, including the Action Plan and Guiding Opinions on Accelerating the Development of Virtual Power Plants, have been developed by Shenzhen Zhongdian Electric Power Technology Co., Ltd. (referred to as "CET Zhongdian Technology") to create a virtual power plant site control solution.

Taking into account the resource aggregation and regulation needs of virtual power plants, multi-objective regulation needs such as anti over demand/anti backflow at the station end, and the requirements for safe and stable operation of the power grid, we aim to solve the problems of difficult resource aggregation and real-time regulation of multiple stations in virtual power plants for our customers, fully empowering distributed new energy stationsParticipating in virtual power plant scheduling and control, as well as providing auxiliary services for the electricity market, has provided strong support for promoting energy transformation and sustainable development.

1. Improve management efficiency and solve the problem of dispersed resource aggregation

By deploying edge controllers at various stations/Station level monitoring and management systemTo achieve unified access, monitoring, and data collection of dispersed resources. Customers can have one-stop access to the operational status of all resources, greatly improving management efficiency and reducing management costs.

2. Enhance interactivity and solve the problem of real-time control of dispersed resources

The edge controllers/station level control systems of each station have powerful data processing capabilities and advanced intelligent control algorithms, which can analyze resource operation data in real time and accurately and quickly schedule distributed resources, providing more stable revenue for the virtual power plant operation group.

3. Ensure data security and solve the problem of communication reliability for dispersed resources

Ensure the security of data transmission through encrypted secure channels to prevent data leakage and illegal access. At the same time, optimized communication protocols and redundant designs improve communication reliability, reduce operational risks caused by communication failures, and safeguard customer interests.

We plan to build an integrated light storage system in ManFenTian Di MallAnd a set of station level EMS control system is requiredThe project will construct a total of 1345kWp distributed photovoltaics and 3375kW/6291kWh distributed energy storage. The distributed photovoltaics will be connected to the 10kV busbar in two ways, and the distributed energy storage will consist of 27 125kW/233kWh energy storage cabinets. They will first converge and connect to nine 0.4kV grid connection points, and then connect to three 10kV busbars through three 10kV lines.

CET provided a complete set of integrated optical storage EMS system solution for the project, which was deployed on-site in the remote communication cabinet of the distribution room on the second floor of the building.

Through the station level EMS system platform, the local peak valley arbitrage intelligent charging and discharging control of the energy storage system+remote planning curve command response can be achieved. When the system operates locally, it can execute the two charging and two discharging operation strategy based on the local peak valley electricity price situation, to prevent the energy storage from increasing voltage and not exceeding its limit load rate, the demand meter from exceeding the demand, and the energy storage power from flowing back; When responding to the control instructions of the virtual power plant plan curve, it can execute according to the 96 point operation plan curve issued by the virtual power plant and participate in auxiliary services in the electricity market.

The station level EMS system simultaneously uses MQTT protocolUpload the data from the four remote stations to the customer's cloud platform to help them achieve intelligent operation and maintenance management on the cloud.