CN202393824U - Arrester signal acquisition device for protecting series compensation capacitor - Google Patents
Arrester signal acquisition device for protecting series compensation capacitor Download PDFInfo
- Publication number
- CN202393824U CN202393824U CN2011205699033U CN201120569903U CN202393824U CN 202393824 U CN202393824 U CN 202393824U CN 2011205699033 U CN2011205699033 U CN 2011205699033U CN 201120569903 U CN201120569903 U CN 201120569903U CN 202393824 U CN202393824 U CN 202393824U
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- circuit
- optical fiber
- lightning arrester
- arrester
- module
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Abstract
The utility model provides an arrester signal acquisition device for protecting a series compensation capacitor, comprising a main processor CPU module, an A/D sampling circuit, an operational amplifier/filter processing circuit, an optical fiber transceiver circuit, a synchronous clock circuit and a power module, wherein the main processor CPU module is connected with the A/D sampling circuit through a CAN bus, and at the same time is connected with the power module, the synchronous clock circuit and the optical fiber transceiver circuit; the A/D sampling circuit is connected with the operational amplifier/filter processing circuit; the input end of the operational amplifier/filter processing circuit is connected with an LPCT coil; and the LPCT coil is used for acquiring the analog quantity signal of the arrester. The arrester signal acquisition device for protecting a series compensation capacitor has the advantages of good electromagnetic compatibility, strong anti-vibration capacity and wide operating temperature range, and is specifically suitable for measuring and acquiring the analog quantity of the arrester in the digital substation.
Description
Technical field
The utility model belongs to lightning arrester and detects and the protection field, relates to a kind of series capacitor compensation protection and uses the lightning arrester signal pickup assembly, realizes online seizure and the collection of series capacitor compensation protection with analog signalses such as leakage current of an arrester, conducting electric currents.
Background technology
Digital technology has almost covered the every field of electric power secondary system.Control, protection and measurement function have been that the digital display circuit of core design realizes by microprocessor.This technique variation of electrical secondary system requires the voltage and current transformation system of the low current output of development of new.
The series capacitor compensation protection is adopted many parallel connections with lightning arrester; Require the arrester valve piece made characteristic consistent during parallel connection; If certain the arrester valve piece made characteristic is inconsistent or generation is aging; This post maybe be accidents caused, for avoiding taking place similar accident, needs series capacitor compensation protection is monitored with the lightning arrester state.The protection of development series capacitor compensation realizes the collection of series compensation platform leakage current of an arrester, conducting electric current with the signal pickup assembly of lightning arrester, through digital signal processing and optical fiber communication, has accomplished the measurement and the collection of the large and small electric current of lightning arrester.
The utility model content
The utility model provides a kind of series capacitor compensation protection to use the lightning arrester signal pickup assembly; Gather the analog signalses such as conducting electric current, leakage current of lightning arrester through LPCT low-power consumption coil; Get into the analog to digital conversion loop through LPF; Convert the current signal of lightning arrester into effective light signal, transfer data to the rear end receiving element through optical fiber and use.
The technical scheme that the utility model adopted is:
The lightning arrester signal pickup assembly is used in a kind of series capacitor compensation protection; Comprise primary processor CPU module, A/D sample circuit, amplifier/Filtering Processing circuit, optical fiber transmission circuit, synchronous clock circuit; And power module; Said primary processor CPU module connects said A/D sample circuit through the CAN bus, connects said power module, synchronous clock circuit and optical fiber transmission circuit simultaneously, and said A/D sample circuit connects said amplifier/Filtering Processing circuit; The input end of said amplifier/Filtering Processing circuit connects the LPCT coil, and this LPCT coil is used to gather the analog signals of lightning arrester.
Said harvester further comprises the laser functional module, and this laser functional module is connected with the A/D sample circuit;
Said harvester further comprises house dog and reset circuit, and this house dog and reset circuit are connected with said primary processor CPU module;
Said optical fiber transmission circuit comprises optical receiving circuit that carries out light/electricity conversion and the optical fiber radiating circuit that carries out electricity/light conversion; Wherein, The model of the optical fiber head of said optical receiving circuit is HFBR2412T, and the model of the optical fiber head of said optical fiber radiating circuit is HFBR1414T.
The protection of the utility model series capacitor compensation has the following advantages with the lightning arrester signal pickup assembly at least: the utility model harvester is gathered current signal to be measured through LPCT low-power consumption coil.Cause the lightning arrester action when thunderbolt takes place in transformer station, can produce conducting electric current on the lightning arrester, and make moist reason etc. when breaking down when lightning arrester up to hundreds of to several kiloamperes, can generation on the lightning arrester leakage current of several milliamperes even several microamperes.The series capacitor compensation protection is different with the situation that traditional lightning arrester one end is in electronegative potential with lightning arrester, and the lightning arrester of series compensation platform is under the noble potential, the high-intensity magnetic field situation.The harvester of designing so not only can catch and gather the large and small current signal on the phase cable; Accomplish task of needing 2 tunnel single formula harvesters to accomplish in the monitoring device digital interface of rear end, have higher monitoring sensitivity and better anti-jamming capability simultaneously again.On the powerup issue of the utility model harvester; One side is with the mode of Optical Fiber Transmission; Laser Power Devices through cold end are supplied power to harvester; Optical fiber is as the carrier of digital signal, Laser Power Supply, effective isolation the equipment of high and low pressure both sides, and resisted the interference of extraneous AC noise; Also can adopt outside 220V ac-powered to insert terminal on the other hand supplies power.The utility model monitoring sensitivity is high, Electro Magnetic Compatibility is good, the anti-vibration ability is strong, and operating temperature range is wide, is specially adapted in the intelligent transformer station lightning arrester current signal on-line monitoring and seizure.
Description of drawings
Fig. 1 is the structured flowchart of the utility model series capacitor compensation protection with the lightning arrester signal pickup assembly.
Embodiment
Below in conjunction with accompanying drawing the protection of the utility model series capacitor compensation is done detailed description with the lightning arrester signal pickup assembly:
The utility model belongs to the active type harvester, is to utilize electromagnetic induction principle, uses LPCT low-power consumption coil to realize the seizure to big or small electric current, mainly is applicable to the progress of disease of big current class of 150A～1500A and the little current class of 100uA-10mA.Requirements such as the architectural feature that proposes for harvester in the electronic mutual inductor according to IEC international organization, digital interface, concrete mode and the characteristics of measuring parameters of electric power in conjunction with active formula photo-electricity mutual-inductor design.
As shown in Figure 1, the utility model harvester comprises primary processor CPU module, A/D sample circuit, laser energy supply module, amplifier/Filtering Processing circuit, optical fiber transmission circuit, synchronous clock circuit, house dog and reset circuit and power module.Said primary processor CPU module connects said A/D sample circuit through the CAN bus, connects said house dog and reset circuit, power module, synchronous clock circuit and optical fiber transmission circuit simultaneously.Said A/D sample circuit connects said laser energy supply module and amplifier/Filtering Processing circuit.The input end of said amplifier/Filtering Processing circuit connects the LPCT coil, and this LPCT coil is used to gather analog signalses such as the conducting electric current, leakage current of lightning arrester.
Said harvester also comprises LPCT low-power consumption coil and sampling resistor; Said LPCT low-power consumption coil connects said sampling resistor; Said sampling resistor is connected between LPCT low-power consumption coil and the amplifier/Filtering Processing circuit.
Said optical fiber transmission circuit comprises optic fiber transceiver module and optic fiber emission modules; Said main control chip connects said optic fiber transceiver module and optic fiber emission modules.
As shown in Figure 1, harvester collects the input end that current analog amount signal is input to harvester through LPCT low-power consumption coil, handle through amplifier/filtering circuit, and then input A/D sample circuit.The A/D sample circuit carries out high-precision signal to the current analog amount and is converted into digital quantity and is input to primary processor CPU module, and primary processor CPU module through handling, transfers out through the optical fiber transmission circuit again.
As shown in Figure 1, electric power source pair of module the utility model harvester is supplied power, and power supply mode has laser powered sensor and 220V ac-powered dual mode, can have very big dirigibility according to the actual state choose reasonable power supply mode at scene.
Said watchdog module and reset circuit reset to CPU when the program run of host CPU processor makes mistakes automatically, guarantee its normal operation.
Employed optical fiber head has two kinds in the circuit, is respectively two kinds of models of HFBR2412T and HFBR1414T, and the former carries out light/electricity conversion, is used to receive the light signal that optical fiber transmits, and is converted into the electric signal that exists on the circuit board; The latter carries out the electric light conversion, becomes light signal to send electrical signal conversion.
The above is merely a kind of embodiment of the utility model; It or not whole or unique embodiment; The conversion of any equivalence that those of ordinary skills take the utility model technical scheme through reading the utility model instructions, the claim that is the utility model contains.
Claims (4)
1. the lightning arrester signal pickup assembly is used in a series capacitor compensation protection; It is characterized in that: comprise primary processor CPU module, A/D sample circuit, amplifier/Filtering Processing circuit, optical fiber transmission circuit, synchronous clock circuit; And power module; Said primary processor CPU module connects said A/D sample circuit through the CAN bus, connects said power module, synchronous clock circuit and optical fiber transmission circuit simultaneously, and said A/D sample circuit connects said amplifier/Filtering Processing circuit; The input end of said amplifier/Filtering Processing circuit connects the LPCT coil, and this LPCT coil is used to gather the analog signals of lightning arrester.
2. the lightning arrester signal pickup assembly is used in a kind of series capacitor compensation protection as claimed in claim 1, and it is characterized in that: said harvester further comprises the laser functional module, and this laser functional module is connected with the A/D sample circuit.
3. the lightning arrester signal pickup assembly is used in a kind of series capacitor compensation protection as claimed in claim 1, and it is characterized in that: said harvester further comprises house dog and reset circuit, and this house dog and reset circuit are connected with said primary processor CPU module.
4. the lightning arrester signal pickup assembly is used in a kind of series capacitor compensation protection as claimed in claim 1; It is characterized in that: said optical fiber transmission circuit comprises optical receiving circuit that carries out light/electricity conversion and the optical fiber radiating circuit that carries out electricity/light conversion; Wherein, The model of the optical fiber head of said optical receiving circuit is HFBR2412T, and the model of the optical fiber head of said optical fiber radiating circuit is HFBR1414T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205699033U CN202393824U (en) | 2011-12-21 | 2011-12-21 | Arrester signal acquisition device for protecting series compensation capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205699033U CN202393824U (en) | 2011-12-21 | 2011-12-21 | Arrester signal acquisition device for protecting series compensation capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202393824U true CN202393824U (en) | 2012-08-22 |
Family
ID=46668738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205699033U Expired - Fee Related CN202393824U (en) | 2011-12-21 | 2011-12-21 | Arrester signal acquisition device for protecting series compensation capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202393824U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980084A (en) * | 2017-05-25 | 2017-07-25 | 贵州电网有限责任公司电力科学研究院 | A kind of test device and method of testing of digital analog integrated protective relaying device |
| CN107800204A (en) * | 2017-10-26 | 2018-03-13 | 电子科技大学 | A kind of power system arrester on-line monitoring system |
| CN113498283A (en) * | 2020-04-07 | 2021-10-12 | 南京南瑞继保电气有限公司 | Signal acquisition box for series compensation device |
-
2011
- 2011-12-21 CN CN2011205699033U patent/CN202393824U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106980084A (en) * | 2017-05-25 | 2017-07-25 | 贵州电网有限责任公司电力科学研究院 | A kind of test device and method of testing of digital analog integrated protective relaying device |
| CN106980084B (en) * | 2017-05-25 | 2023-06-20 | 贵州电网有限责任公司电力科学研究院 | Testing device and testing method for digital-analog integrated relay protection device |
| CN107800204A (en) * | 2017-10-26 | 2018-03-13 | 电子科技大学 | A kind of power system arrester on-line monitoring system |
| CN113498283A (en) * | 2020-04-07 | 2021-10-12 | 南京南瑞继保电气有限公司 | Signal acquisition box for series compensation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20181221 |