A continuous power supply system for a relay protection device

A technology of relay protection device and power supply system, which is applied to circuit devices, battery circuit devices, current collectors, etc., can solve the problems of abnormal parameters of relay protection device and inability to save real-time data in time.

Active Publication Date: 2011-12-14
BEIJING SIFANG JIBAO AUTOMATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Solve a series of problems such as the abnormality of the parameters of the relay protection device and the inability to save real-time data in time due to the abnormality of the power module. The invention provides a continuous power supply system for the relay protection device

Method used

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  • A continuous power supply system for a relay protection device
  • A continuous power supply system for a relay protection device
  • A continuous power supply system for a relay protection device

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Embodiment Construction

[0021] The technical solution of the present invention will be described in further detail below according to the accompanying drawings.

[0022] The invention discloses a continuous power supply system for a relay protection device, such as figure 1 As shown, the device includes a control unit, a supercapacitor bank, a charging and discharging module and a boosting and stabilizing module. The supercapacitor bank module is connected to the external power supply through the charging and discharging module, and is connected to the control unit and the load respectively through the boosting and stabilizing module. When the external power supply is abnormal, the control unit and the load power supply, wherein the load is a relay protection device. The external power supply is also connected to the control unit and the load respectively through the step-up voltage stabilization module, and supplies power to the control unit and the load when the external power supply is normal. T...

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Abstract

The invention discloses an uninterrupted power supply system for a relay protection device. The power supply system can continuously supply power to the protection device for a period of time when an outer power supply system of the relay protection device is instable or failed so as to prolong the working time of the relay protection device and the power supply drop resistance time and timely record electric quantities before and after power supply drops, and thus accident analysis can be facilitated. An energy storing element adopts a mature super capacitor; and compared with a lithium battery, the mature super capacitor is maintenance-free and has longer service life. Charging and discharging processes and a voltage monitoring part are controlled by a singlechip which can be made into a power supply plug-in installed in the device. The uninterrupted power supply system can also be applied to devices of other fields so as to guarantee uninterrupted power supply.

Description

technical field [0001] The invention belongs to the field of relay protection for power systems, and in particular relates to a device that can be used as a backup power supply for a relay protection device to continuously supply power to the protection device for a period of time, and can also be applied to devices in other fields for continuous power supply. Background technique [0002] In power system relay protection, the power module is the weakest link. The damage of the power module often leads to the abnormality of the parameters of the relay protection device, the real-time data cannot be saved in time, and sometimes the device malfunctions or refuses to operate due to the abnormality of the power module, which affects the production and life of users. In order to solve this problem, most manufacturers consider the dual power supply mutual backup scheme, which can solve the problem of power module damage and non-operation to a certain extent, but for some power sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/00H02J9/04H02J7/00
Inventor 徐刚黄少锋马伟东
Owner BEIJING SIFANG JIBAO AUTOMATION
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