Electrical wiring system of new friendly power station of retired coal power and wind-solar-thermal-storage integration

Through innovative designs such as reusing retired coal-fired power plant assets, grouping and connecting new energy sources, coordinating electric heating and thermal energy storage, and multi-energy flow coupling boosting modules, the technical compatibility and stability issues of idle retired coal-fired power plant electrical infrastructure and on-site consumption of new energy power have been solved, achieving efficient integration and stable operation of retired coal-fired power plants with wind, solar, thermal, and energy storage.

CN122118921APending Publication Date: 2026-05-29HUAIHE ENERGY POWER GRP CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAIHE ENERGY POWER GRP CO LTD
Filing Date
2026-03-05
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing technologies, there are challenges such as the idle and wasteful use of electrical infrastructure in decommissioned coal-fired power plants and the difficulty of efficient reuse; significant energy efficiency losses during the local consumption and transmission of new energy power; and challenges in the technical compatibility and stability of electrical wiring systems in integrated wind, solar, thermal, and energy storage power plants.

Method used

The system utilizes a module for reusing existing assets of decommissioned coal-fired power plants, efficiently reusing the original core electrical assets of decommissioned coal-fired power plants and seamlessly integrating them with the new system. The new energy grouping and connecting module is directly connected to the 35kV bus according to the installed capacity and electric heating power. The electric heating-thermal storage co-consumption module is connected to the 35kV bus according to the power matching. The multi-energy flow coupling boosting module realizes the integrated convergence and boosting of the three energy sources for external transmission. The grid-friendly support and collaborative protection module provides reactive power support and fault protection. The plant power adaptive power supply module realizes multi-source collaborative power supply.

Benefits of technology

It has achieved efficient integration of decommissioned coal-fired power plants with wind, solar and thermal energy storage, reduced new construction costs, simplified system structure, improved the stability and reliability of power plants, reduced energy efficiency losses, and met the construction requirements of new power systems.

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Abstract

The application relates to a new friendly power station electrical wiring system integrating retired coal power and wind-solar-thermal storage, which comprises the following steps: detecting and remanufacturing the core equipment of retired coal power, grouping new energy according to the matching principle of electric heating power, realizing voltage regulation and cooperation through grouping control and reactive power compensation, one-to-one correspondence between electric heating and the new energy grouping, forming a body of generation and use through a power distribution system, connecting to the same first bus, taking the second bus as the hub, connecting multi-source output, and coupling after current convergence to realize step-up and external transmission, configuring hierarchical reactive power compensation and partition protection, cooperating with voltage regulation and multi-source linkage logic, and guaranteeing grid connection safety. The application efficiently activates the stock assets of retired coal power plants, utilizes the original step-up station, transmission line and other special power facilities, realizes stable and reliable electrical integration with the newly built new energy system without subversive transformation, avoids the waste of idle original facilities, and significantly reduces the initial investment of the power station.
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