A monitoring system and method for a megawatt-level battery energy storage power station
A technology of battery energy storage and monitoring system, which is applied in the monitoring and management of grid-connected system of large-scale battery energy storage power station, and the monitoring system field of megawatt battery energy storage power station, to ensure the healthy operation of battery, wide application range, reduce The effect of small battery deterioration
Active Publication Date: 2015-09-09
CHINA ELECTRIC POWER RES INST +1
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[0005] On the premise of ensuring reliability and stability, the energy storage power station monitoring system needs to meet the performance requirements of real-time dispatching and control of distribution network end users, and respond quickly to the needs of energy storage systems in various application scenarios of the power grid. Here comes the big challenge
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[0034] The monitoring system and monitoring method of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0035] figure 1 Shown is the system topology diagram of the 14MW lithium battery energy storage power station currently deployed in the Zhangbei National Wind Power Storage and Transmission Demonstration Power Station. Such as figure 1 As shown, the wind-solar-storage combined power generation system connected to the battery energy storage power station includes wind farms, photovoltaic power plants, battery energy storage power stations and power grids. Wind farms, photovoltaic farms and battery energy storage power stations are connected to the grid through transformers. The schematic diagrams of the internal connections of wind farms and photovoltaic farms are omitted here. In this example, the 14MW lithium battery energy storage power station includes 9 parallel lithium battery ene...
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The invention provides a monitoring system and a monitoring method of a megawatt battery energy storage power station. The system comprises a central monitoring module and a local monitoring module. The two modules are in communication and connection by adopting a communication network structure in which a real-time communication network and a non-real-time monitoring communication network are in parallel. The method comprises the following steps: reading related data of the battery energy storage power station through the communication networks, and performing storage and management; determining the total power demand of the battery energy storage power station; determining the power command value of each energy storage substation and issuing the power command value to each local monitoring module; calculating the power command value of each energy storage unit in the energy storage substation, and issuing the power command value to each energy storage unit; and uploading the power command value, the real-time data and the non-real-time data of each energy storage unit in the local monitoring module to the central monitoring module for unified storage and management. The system and the method can be used to satisfy the monitoring requirements on energy storage unit cluster-type real-time and fast control and mass of transmitted data, so that the health operation of batteries can be ensured so as to make the energy storage power station more safe and stable.
Description
technical field [0001] The invention belongs to the technical field of smart grid and energy storage and conversion, and specifically relates to a monitoring system and method for a megawatt-level battery energy storage power station, and is especially suitable for monitoring and management of a grid-connected system of a large-scale battery energy storage power station. Background technique [0002] The National Wind-Storage Storage and Transmission Demonstration Project is the first batch of pilot projects of the State Grid Corporation of China to build a strong and smart grid. It is the world's largest comprehensive renewable energy demonstration project integrating wind power, photovoltaic power generation, energy storage and power transmission projects. Among them, the national wind power storage and transmission demonstration project (phase I) plans to build 100MW of wind power, 40MW of photovoltaic power generation and 20MW of energy storage devices (including 14MW li...
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IPC IPC(8): H02J3/32
Inventor 李相俊惠东来小康贾学翠王立业郭光朝王平梁廷婷张亮
Owner CHINA ELECTRIC POWER RES INST