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Modularized and distributed parallel battery direct current system

A DC system, distributed technology, applied in the direction of battery circuit devices, current collectors, electric vehicles, etc., can solve the problems of low reliability and long time consumption, so as to reduce secondary wiring, reduce usage, and reduce DC insulation The effect of the probability of failure

Pending Publication Date: 2018-03-27
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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Problems solved by technology

The reliability of this arrangement is not high, limited by the quality of a single battery, the battery needs to be maintained offline, and the battery pack is manually operated out of operation, and a full-capacity nuclear capacity test will take at least 2 people for 2 to 3 days time-consuming

Method used

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  • Modularized and distributed parallel battery direct current system
  • Modularized and distributed parallel battery direct current system
  • Modularized and distributed parallel battery direct current system

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Embodiment Construction

[0025] based on the following figure 2 and image 3 , specifically explain the preferred embodiment of the present invention.

[0026] Such as figure 2 As shown, the present invention provides a modular distributed parallel battery DC system, including: a secondary equipment room DC system module 1 and a 110kV and 10kV power distribution device DC system module 2, and the DC bus of these two modules is provided with Bus tie switch 3, under normal circumstances, the bus tie switch 3 is disconnected, the DC system module 1 of the secondary equipment room and the DC system module 2 of the 110kV and 10kV power distribution equipment operate separately, when a certain section of the bus is overhauled or the number of multiple modules is damaged , by closing the bus tie switch 3, the mutual support between the two bus sections can be realized.

[0027] The DC system module 1 of the secondary equipment room and the DC system module 2 of the 110kV and 10kV power distribution devi...

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Abstract

A modularized and distributed parallel battery direct current system is disclosed and comprises a secondary equipment room direct current system module and a 110 kV and 10 kV power distribution devicedirect current system module, and a bus coupler switch is arranged between direct current buses of the secondary equipment room direct current system module and a 110 kV and 10 kV power distributiondevice direct current system module. Each of the secondary equipment room direct current system module and the 110 kV and 10 kV power distribution device direct current system module comprises a plurality of parallel connected intelligent battery assemblies, a direct current monitoring system module and an intelligent feed line unit, wherein one end of each intelligent battery assembly is connected with the direct current buses while the other end is connected with an alternating current power distribution unit, the direct current monitoring system module is connected with the direct current buses, and the intelligent feed line unit is connected with the direct current buses. Modularized and distributed approximation-based distribution is adopted for the direct current system disclosed inthe invention, storage batteries are connected in parallel in an indirect manner, an application amount of direct current cables can be greatly reduced, rates of direct current insulation faults can be lowered, and power supply reliability of the direct current system can be improved.

Description

technical field [0001] The invention relates to a modular distributed parallel battery DC system. Background technique [0002] Such as figure 1 As shown, the DC system of a traditional substation consists of charging components, battery packs, battery inspection instruments, insulation monitors, DC monitoring systems and feeder units. The bus voltage is obtained by stacking batteries in series, and all loads are concentrated on the same DC bus. Since the DC feeder panel is centrally arranged in the control room, a large number of cables are required to reach the DC load. In addition, since the batteries are installed in a centralized manner, a battery pack exceeding 300AH needs to be equipped with an independent battery room and equipped with an explosion-proof air conditioner. The reliability of this arrangement is not high, limited by the quality of a single battery, the battery needs to be maintained offline, and the battery pack is manually operated out of operation, ...

Claims

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Application Information

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IPC IPC(8): H02J11/00H02J7/00
CPCH02J11/00H02J2207/20
Inventor 安益孙斌徐擎士王坚陈晨秦嘉南季蕾施浩
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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