Energy storage system with mutual conversion between charging and discharging circuits
A charge-discharge circuit and mutual conversion technology, which is applied in the field of energy storage systems, can solve problems such as peak-shaving and valley-filling operations that cannot be performed normally, and achieve the effects of reducing enterprise operating costs, increasing safety and reliability, and improving power consumption patterns
Active Publication Date: 2021-07-09
ZHEJIANG NARADA POWER SOURCE CO LTD +1
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Problems solved by technology
Originally, when building an enterprise-level peak-shaving and valley-filling energy storage system, one way is directly connected to the enterprise distribution network, and there is only one charging and discharging circuit. However, some enterprise power distribution networks have two incoming lines, and one incoming line can meet the requirements of the energy storage system. The other line can meet the peak discharge requirements of the energy storage system. If the energy storage system is connected to the incoming line of one line, it will not be able to cut peaks and fill valleys normally.
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Embodiment 1
[0031] An energy storage system in which charging and discharging circuits are mutually converted, such as figure 1 , 2 As shown in . figure 1 In the generator set connected to the load unit, the load unit is equivalent to the power consumption part of the user, and the energy storage system for the mutual conversion of the charging and discharging circuit includes a lead-carbon energy storage module 200, a communication module 400 and an energy management module 300; the lead The carbon energy storage module 200 includes an energy storage unit 210, a charge-discharge conversion unit 220, and a load detection unit 230. The charge-discharge conversion unit 220 is connected to the energy storage unit 210, and the energy storage unit 210 is used for charging and discharging. The discharge conversion unit 220 is used to realize the charging and discharging conversion of the energy storage unit 210, and the load detection unit 230 is used to detect the current and voltage of the u...
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The invention discloses an energy storage system with mutual conversion of charge and discharge circuits. The energy storage system with mutual conversion of charge and discharge circuits includes a lead-carbon energy storage module, a communication module and an energy management module; the energy management modules are respectively connected to the energy storage unit, a charge-discharge conversion unit, and a load detection unit, the energy management module is used to set the charge-discharge period of the charge-discharge conversion unit according to the peak-valley time of the user, and then automatically control the charge-discharge conversion unit to perform charge-discharge conversion; at the same time According to the charging and discharging power of the energy storage unit detected by the load detection unit and the power status of the user's power distribution network, the real-time power during charging or discharging is controlled; the present invention can realize the whole energy storage by monitoring the load in the user's power distribution network The peak-shaving and valley-filling of the system means that the lead-carbon battery unit stores electric energy through the charging structure during the valley period, and releases the stored electric energy through the discharge structure during the peak period.
Description
technical field [0001] The invention relates to the technical field of electric energy storage and conversion, in particular to an energy storage system in which charging and discharging circuits are mutually converted. Background technique [0002] In recent years, on the basis of growing market demand and increasing national policy support, the application of energy storage technology will run through all links of power generation, transmission, distribution, and power consumption in the power system, which can alleviate peak loads Power supply demand, improve the utilization rate of existing power grid equipment and the operation efficiency of the power grid, can effectively deal with the occurrence of power grid faults, improve power quality and power consumption efficiency, and meet the requirements of economic and social development for high-quality, safe, reliable power supply and efficient power consumption . [0003] With the rapid development of society, various e...
Claims
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IPC IPC(8): H02J7/00H02J9/06H02J3/32
CPCH02J7/0022H02J3/32H02J9/061
Inventor 谭建国夏国良王昌俊严广龙
Owner ZHEJIANG NARADA POWER SOURCE CO LTD