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Feeder automation protection terminal based on embedded platform

A technology for feeder automation and protection terminals, which is applied in the direction of emergency protection circuit devices, electrical components, circuit devices, etc., can solve the problems that the feeder automation protection terminals cannot be realized, and achieve the effect of simplified configuration and accurate detection

Pending Publication Date: 2019-06-28
安徽中鑫继远信息技术股份有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

For this reason, the distribution automation protection terminal must strictly control the overall power consumption, and the planned design power consumption is within 5W (including the charging power of the energy storage capacitor and the battery), which cannot be achieved by the existing feeder automation protection terminal.

Method used

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  • Feeder automation protection terminal based on embedded platform
  • Feeder automation protection terminal based on embedded platform
  • Feeder automation protection terminal based on embedded platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, the feeder automation protection terminal based on the embedded platform uses the DSP chip TMS320F28335 as the core processor, uses the two serial ports on the chip to realize S232 / RS485 communication, and expands the W5100 for Ethernet communication, using the chip I / O pins Remote control is realized through optical isolation control, the bus is extended with 16-bit high-precision AD chip ADS8556 to realize telemetry, and the bus interface is photoelectrically isolated to realize remote signaling.

[0047] Including the AC acquisition module, the AC acquisition module is composed of an AC converter, a pre-conversion circuit, an AD chip, an interface circuit between the AD chip and the CPU chip, and collects 4 voltages and 4 currents, which can complete the AC sampling of 1 circuit .

[0048] The AC converter is composed of a voltage converter and a current converter. The input voltage of the voltage converter is 300VAC, and the output voltag...

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PUM

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Abstract

The invention provides a feeder automation protection terminal based on an embedded platform, and relates to the technical field of power supply network security and electrical equipment. A DSP chip TMS320F28335 is used as a core processor, and the S232 / RS485 communication is realized by two serial ports on a chip. Ethernet communication is carried out by expanding W5100, and remote control is realized by an I / O pin of the chip through optical isolation control; the remote measurement is realized by a 16-bit high-precision AD chip ADS8556 through bus expansion, and remote signaling is realizedby photoelectric isolation of a bus interface. The invention has the beneficial effects that 1, high-precision data acquisition and calculation of micro signals can be realized; 2, zero sequence power protection of the distribution network; 3, distribution network grounding composite current protection; and 4, an embedded hardware platform with ultra-low power consumption.

Description

technical field [0001] The invention relates to the technical fields of power supply network security and electrical equipment, in particular to a feeder automation protection terminal based on an embedded platform. Background technique [0002] With the development of economy and society, all walks of life have higher and higher requirements for power supply reliability. The reliability of power supply is an important assessment index of the power system. At present, the indicators of the State Grid Corporation of China to assess the reliability of power supply include: trip rate, customer complaint rate, power distribution outage rate, etc. [0003] In the power grid structure, due to the large amount and wide area of ​​the distribution network, there are many branches on the line, the network structure is complex, and there are many fault points, especially the single-phase ground fault with a small short-circuit current occurs more frequently, accounting for various faul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J13/00H02H7/26
CPCY04S40/124Y02B90/20
Inventor 徐强杨阳智建立韩海舰
Owner 安徽中鑫继远信息技术股份有限公司
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