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Power amplifier used for intelligent substation testing system

A technology for power amplifiers and smart substations, applied in control/regulation systems, output power conversion devices, conversion of DC power input to DC power output, etc., can solve problems such as serious heat generation, difficulty in improving power density, and low efficiency of linear power amplifiers , to achieve the effect of improving efficiency, increasing power density, ensuring stability and safety

Inactive Publication Date: 2013-03-13
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low efficiency of linear power amplifiers and severe heat generation, it is difficult to increase the power density

Method used

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  • Power amplifier used for intelligent substation testing system
  • Power amplifier used for intelligent substation testing system
  • Power amplifier used for intelligent substation testing system

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the following description is only for explaining the present invention and not limiting its content.

[0030] figure 1 It is a structural block diagram of the present invention. Such as figure 1 As shown, the present invention includes a power input module 101 , a rectifier bridge 103 , a DC / DC converter 105 and a DC / AC converter 107 . The power input module 101 outputs 220V AC voltage, and the rectifier bridge 103 is connected to the power input module 101 to convert the 220V AC voltage into about 300V DC voltage, and the DC / DC converter 105 converts the 300V DC voltage into 1V~ DC voltage of 150V to provide power for the DC / AC converter 107 . The DC / AC converter 107 amplifies the power of the reference signal provided by the control system and outputs it.

[0031] The DC / DC converter adopts a half-bridge converter, and its ma...

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Abstract

The invention discloses a power amplifier used for an intelligent substation testing system. The power amplifier comprises a power supply input module for outputting the 220V alternating-current voltage, a rectifier bridge for rectifying the 220V alternating-current voltage into the 300V direct-current voltage, a DC / DC (direct-current to direct-current) converter for converting the 300V direct-current voltage into the 1-150V direct-current voltage and a DC / AC (direct-current to alternating-current) converter for carrying out power amplification and output on a reference signal, and the four components are connected in sequence. With the adoption of the power amplifier used for the intelligent substation testing system, the efficiency of the power amplifier is improved, and the power intensity of the power amplifier is increased; and in addition, the power amplifier can be further provided with multiple protection design of over-current protection and over-voltage protection, so that the stability and the security of the system in operation are ensured.

Description

technical field [0001] The invention relates to a power amplifier, in particular to a power amplifier used in an intelligent substation test system. The invention belongs to the technical field of intelligent substation testing. Background technique [0002] With the rapid development of communication network technology, photoelectric transformer technology, and digital protection technology, many manufacturers and research institutes have done a lot of innovative research work on smart grid substation technology, and have gained experience and experience in smart grid digital substation research. results. In short, the digital substation is an important part of building a unified and strong smart grid. The digital substation will change the primary and secondary equipment of the traditional substation, with the primary and secondary equipment of the substation as the digital object, based on the high-speed network communication platform, The protection and measurement and...

Claims

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Application Information

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IPC IPC(8): H02M5/40H02M3/335H02M7/5387H02H7/10
Inventor 张国辉井雨刚唐新建孙运涛刘延华王永波
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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