Mobile combined type direct-current power supply terminal

A DC power supply, combined technology, applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve the problems of unsafe operation of substations, failure to guarantee power consumption of users, and damage to switch cabinets of substations, etc., to achieve easy portability and light weight , Stable and reliable performance

Inactive Publication Date: 2016-11-09
SICHUAN XINGZHI ZHIHUI INTPROP OPERATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the storage battery pack of the DC system is extremely important. Once it does not work normally, the entire substation cannot operate safely.
If the substation cannot operate safely, the failure of the substation cannot be detected in time. The short-circuit failure of the external high-voltage line will cause damage to the high-voltage switchgear of the substation, resulting in large-scale power outages, so that the needs of users cannot be guaranteed.

Method used

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  • Mobile combined type direct-current power supply terminal

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Effect test

Embodiment 1

[0016] Such as figure 1 As shown, the present invention includes a portable DC charger E, a rectifier diode D, a battery pack C, a silicon step-down device, a control bus, a closing power bus and a plurality of output switches S connected in series in sequence. A silicon step-down device, a control busbar and a plurality of output switches are sequentially connected in series between the positive pole and the negative pole; the positive pole of the rectifier diode D is connected to the positive pole of the portable DC motor E, and the negative pole of the rectifier diode D is connected to the positive pole of the battery pack C, The negative pole of the portable DC charger E is connected to the negative pole of the battery pack C; the closing power bus is connected to the negative pole of the rectifier diode D, and the voltage regulator diodes D5, D5, Zener diode D6, Zener diode D7 and Zener diode D8; a plurality of Zener diodes are connected in parallel between the control bu...

Embodiment 2

[0019] The preferred specific structure of this embodiment on the basis of embodiment 1 is as follows: the storage battery pack C includes 18 12V / 50Ah batteries connected in series in sequence.

[0020] Zener diode D1, Zener diode D2, Zener diode D3, Zener diode D4, Zener diode D5, Zener diode D6, Zener diode D7 and Zener diode D8 are all 2CW22N.

[0021] The rectifier diode D is a planar silicon rectifier diode. The voltage regulation range of this type of Zener diode is between 32-40V, and the maximum stable current is about 75mA. The voltage of 128-160V can be kept stable through the superposition of multiple Zener diodes.

[0022] The DC charger is a 220V DC screen charger. The model is NHCD110 / 220, the motor adopts constant current-constant voltage current limiting-constant voltage floating charge, stable and reliable performance, small size, light weight, easy to carry.

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Abstract

The invention discloses a mobile combined type direct-current power supply terminal which comprises a handheld direct-current charger E, a rectifier diode D, a storage battery pack C, a silicon voltage reduction device, a control bus, a switching-on dynamic bus and a plurality of output switches S connected in series. The silicon voltage reduction device, the control bus and the output switches are sequentially connected in series between a positive electrode and a negative electrode of the storage battery pack C. The positive electrode of the rectifier diode D is connected with the positive electrode of the handheld direct-current charger E. The negative electrode of the rectifier diode D is connected with the positive electrode of the storage battery pack C. The negative electrode of the handheld direct-current charger E is connected with the negative electrode of the storage battery pack C. According to the structure, the storage battery pack can be rapidly charged in a short time during a fault, so that the direct-current system is recovered to run, it is ensured that a measurement and protection system in a transformer substation can normally run, the phenomenon that a large-area outage is caused when a high-voltage switch cabinet in the transformer substation is damaged by a short-circuit fault of a high-voltage outgoing line is avoided, meanwhile, the mobile combined type direct-current power supply terminal is simple in composition, and the fault treatment time of the direct-current system is greatly shortened.

Description

technical field [0001] The invention relates to the field of electric power supply, in particular to a mobile combined direct current power supply terminal. Background technique [0002] At this stage, because the measurement and protection system in the substation is powered by the DC system in the substation, when the DC system of the substation fails or is overhauled, the substation will shut down the entire station, which is not conducive to improving the reliability of power supply. The DC system is one of the most important links in the substation. The 35kV substation does not provide a backup system for it. Therefore, when the DC system in the substation fails or the DC system is overhauled, the substation must be shut down. At present, the substation is an important part of power transmission in the power grid during power operation, and the 220V DC power supply and battery in the substation are important equipment to provide energy for the protection devices in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J11/00H02J7/00
CPCH02J7/00H02J7/34H02J11/00
Inventor 贺昶明
Owner SICHUAN XINGZHI ZHIHUI INTPROP OPERATION CO LTD
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