CN204479672U - A kind of DC line direct current arrester electrification detection system - Google Patents
A kind of DC line direct current arrester electrification detection system Download PDFInfo
- Publication number
- CN204479672U CN204479672U CN201520116003.1U CN201520116003U CN204479672U CN 204479672 U CN204479672 U CN 204479672U CN 201520116003 U CN201520116003 U CN 201520116003U CN 204479672 U CN204479672 U CN 204479672U
- Authority
- CN
- China
- Prior art keywords
- voltage
- line
- direct current
- wireless transceiver
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model discloses a kind of DC line direct current arrester electrification detection system, it comprises: high voltage dc bus, shaft tower, direct current arrester, bus-bar potential transformer, current sample module, voltage sample module and harmonic analysis instrument and resistance meter, harmonic analysis instrument and the equal received current sampling module of resistance meter, voltage sample module is respectively by direct current arrester, the current data sequence that bus-bar potential transformer extracts and voltage data sequence, thus by harmonic analysis instrument, current data sequence and voltage data sequence are shown, shown by the resistance value of resistance meter to direct current arrester, reach the reliability judging direct current arrester.The utility model decreases the aging factor such as to make moist to the adverse effect of direct current arrester, improves the security that straight-flow system is run.
Description
Technical field
The utility model relates to straight-flow system service technique field, is specifically related to a kind of on-line detecting system of DC line direct current arrester.
Background technology
Along with the rapid development of Chinese society's economy and the continuous progress of science and technology, the demand of entire society to electric energy is increasing, and therefore electrical network scale constantly expands.But there is serious asymmetric problem in Chinese energy distribution and economic development, the economically developed energy in east and south is few, Western Energy Resources enriches but economy comparatively backwardness, therefore Western Energy Resources is effectively transported to east and south, contributes to the sustainable development of national economy.High-voltage direct-current technology of transmission of electricity is with the obvious advantage in remote Large Copacity conveying because of it, and in the large ground of China, the super extra-high voltage DC transmission system of existing many friendships puts into operation.
DC line lightning arrester is a power equipment main in high-voltage direct-current technology of transmission of electricity; DC line lightning arrester is mainly used in the lightning surge limiting circuit or the internal overvoltage having operation to cause; be one of important proterctive equipment ensureing safe operation of power system, its safe power supply of normal operation to the system of guarantee plays an important role.Generally use Zinc-Oxide Arrester MOA at present, in operation of power networks process, internal wetted is often there is and the defect such as valve block is aging due to MOA, the performance of MOA can change in long-time running, originally the impedance threshold of MOA can not meet the requirement of electric power netting safe running, thus has had a strong impact on the safe operation of electric power supply.Therefore a kind of DC line lightning arrester on-line detecting system is developed, can control in real time and determine the impedance threshold of direct current arrester, the safe and stable operation of direct current power system is had great significance, electric power supply is ensured there is important technical support, brings great economic benefit simultaneously.
Utility model content
The purpose of this utility model is that, for above-mentioned DC line lightning arrester characteristic of accident, the DC line lightning arrester on-line detecting system providing a kind of good stability, reliability high, for determining the running status of direct current arrester.
For realizing above object, the utility model takes following technical scheme:
A kind of DC line direct current arrester electrification detection system, it comprises:
High voltage dc bus, for generation of d. c. voltage signal;
Shaft tower, described shaft tower is connected by DC line with between high voltage dc bus;
Bus-bar potential transformer, the primary side of described bus-bar potential transformer and high voltage dc bus are electrically connected, for converting described d. c. voltage signal, the direct voltage output signal after the secondary side of bus-bar potential transformer produces a conversion;
Direct current arrester, be installed on described shaft tower side, the primary side of described direct current arrester and DC line are electrically connected, and form current signal measurement point, after described d. c. voltage signal flows through direct current arrester by DC line, produce a DC current signal in the ground side of direct current arrester;
Voltage sample module, the input end of described voltage sample module and the secondary side of bus-bar potential transformer are electrically connected, and for carrying out multiple repairing weld to described direct voltage output signal, obtain the voltage data sequence of sampling;
Current sample module, the input end of described current sample module and the ground loop of direct current arrester are electrically connected, and for carrying out multiple repairing weld to described DC current signal, obtain the current data sequence of sampling;
Display unit, described display unit comprises harmonic analysis instrument and resistance meter; Wherein, described harmonic analysis instrument is for receiving and showing the information of described current data sequence, voltage data sequence; Described resistance meter for receive described current data sequence, voltage data sequence information and show the DC resistance of direct current arrester.
Described current sample module comprises current sensor, first a/d conversion device, first central processing unit and the first wireless transceiver terminal, the sampling probe of described current sensor is serially connected in the ground loop of direct current arrester, the output terminal of described current sensor is all connected by the input end of the first a/d conversion device with the first central processing unit, for current sensor is sent to the first central processing unit to the current data sequence that described DC current signal carries out multiple repairing weld acquisition after analog to digital conversion, the output terminal of described first central processing unit and the input end of the first wireless transceiver terminal are electrically connected, for the current data sequence after the analog to digital conversion of acquisition is sent to harmonic analysis instrument and resistance meter by the first wireless transceiver terminal.
Described voltage sample module comprises voltage sensor, second a/d conversion device, second central processing unit and the second wireless transceiver terminal, the sampling probe of described voltage sensor is serially connected in bus-bar potential transformer secondary side, the output terminal of described voltage sensor is connected with the input end of the second central processing unit by the second a/d conversion device, for voltage sensor is sent to the second central processing unit to the voltage data sequence that described direct voltage output signal carries out multiple repairing weld acquisition after analog to digital conversion, the output terminal of described second central processing unit and the input end of the second wireless transceiver terminal are electrically connected, for the voltage data sequence after the analog to digital conversion of acquisition is sent to harmonic analysis instrument and resistance meter by the second wireless transceiver terminal.
Described DC line comprises pole 1 circuit and pole 2 circuit, wherein, the disconnected chalaza that pole 1 circuit and pole 2 circuit are formed with high voltage dc bus is respectively designated as A point and B point respectively, and the current signal measurement point that the primary side of described direct current arrester and DC line are formed lays respectively at C point on pole 1 circuit and pole 2 circuit and D point.
Described DC line direct current arrester electrification detection system comprises a DC line resistance measuring module further, for measuring DC line current value by an external DC voltage power supply, described DC line current value is sent in resistance meter, to show DC line resistance value, described DC line resistance value is the resistance of the DC line between high voltage dc bus and current signal measurement point.
Described DC line resistance measuring module comprises DC voltage power supply, the first reometer, the second reometer, chopper switch, earthing device, the 3rd a/d conversion device, the 3rd wireless transceiver terminal; Wherein, two output terminals of DC voltage power supply are connected to A point and B point respectively, its input end, by switch S 3 ground connection, is connected in series the first reometer and switch S 1 between described A point and DC voltage power supply, is connected in series the second reometer and switch S 2 between described B point and DC voltage power supply; Described earthing device comprises switch S 4, switch S 5, switch S 6, and one end of described switch S 4 is connected to C point, and the other end is by switch S 6 ground connection, and the two ends of described switch S 5 are connected to D point and between switch S 4 and switch S 6 respectively; Disconnected conjunction place between described DC line and high voltage dc bus is connected by chopper switch; The DC line current value that the two is all recorded by the 3rd wireless transceiver terminal by the 3rd a/d conversion device by the output terminal of described first reometer and the second reometer is sent to resistance meter.
Described harmonic analysis instrument and resistance meter all carry out wireless telecommunications by a wireless transceiver master station and voltage sample module, current sample module and DC line resistance measuring module, the input end of described wireless transceiver master station respectively with the output terminal wireless connections of the first wireless transceiver terminal, the second wireless transceiver terminal and the 3rd wireless transceiver terminal, the output terminal of described wireless transceiver master station is connected with resistance meter respectively with harmonic analysis instrument.
Described wireless transceiver master station, the first wireless transceiver terminal, the second wireless transceiver terminal and the 3rd wireless transceiver terminal are wireless router.
The utility model compared with prior art, tool has the following advantages: the utility model take direct current arrester as subjects, with high voltage dc bus, bus-bar potential transformer, current sensor, voltage sensor, AD reforming unit, central processing unit, wireless transceiver terminal, wireless transceiver master station, harmonic analysis instrument and resistance meter are hardware condition, the current sequence signal of direct current arrester ground loop and voltage sampling apparatus is taked to take busbar voltage sequence signal by current sampling device, the harmonic voltage total amount of direct current arrester and harmonic current total amount and DC current values is obtained by harmonic analysis instrument, the DC resistance of direct current arrester is obtained by resistance meter, judge the running status of direct current arrester.Decision method is: when the DC resistance R of direct current arrester be less than 2.5G Ω or DC current values I be greater than 50 microamperes time, have a power failure change described direct current arrester; Rate of change when between DC resistance R twice live detection adjacent with DC current values I of direct current arrester be greater than 30% or the total amount of harmonic current be greater than 3015A or harmonic voltage total amount and be greater than 520kV (for the DC line of 500kV electric pressure) or harmonic voltage total amount when being greater than 816kV (for the DC line of 800kV electric pressure), the cycle of the adjacent secondary live detection of reduction direct current arrester is to strengthen monitoring.Thus ensure the available protecting effect of direct current arrester, have directly perceived, fast, the advanced feature such as safety, decrease the aging factor such as to make moist to the adverse effect of direct current arrester.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of a kind of DC line direct current arrester of the utility model electrification detection system;
Fig. 2 is the circuit theory diagrams of DC line resistance measuring module;
Fig. 3 is the schematic diagram of measuring state 1 in Fig. 2;
Fig. 4 is the schematic diagram of measuring state 2 in Fig. 2;
Fig. 5 is the schematic diagram of measuring state 3 in Fig. 2.
Wherein: 1, high voltage dc bus; 2, shaft tower; 3, bus-bar potential transformer; 4, direct current arrester; 5, voltage sample module; 51, voltage sensor; 52, temperature sensor; 53, a/d conversion device; 54, wireless transceiver terminal; 55, central processing unit; 6, current sample module; 61, current sensor; 62, temperature sensor; 63, a/d conversion device; 64, wireless transceiver terminal; 65, central processing unit; 7, DC line resistance measuring module; 71, DC line; 72, DC voltage power supply; 73, reometer; 74, reometer; 75, chopper switch; 76, earthing device; 77, a/d conversion device; 78, wireless transceiver terminal; 8, wireless transceiver master station; 9, harmonic analysis instrument; 10, resistance meter.
Embodiment
Below in conjunction with the drawings and specific embodiments, content of the present utility model is described in further details.
Embodiment:
Please refer to shown in Fig. 1, a kind of DC line direct current arrester electrification detection system, is applicable to the performance test of leakage conductor, in use breaks down to prevent it.This electrification detection system comprises: for providing d. c. voltage signal to do the high voltage dc bus 1 analyzed, the direct current arrester connected is for providing the shaft tower 2 of DC current signal, for converting DC voltage so that voltage sensor 51 takes the bus-bar potential transformer 3 of data, for providing the DC current signal flowing through lightning arrester to do the direct current arrester 4 analyzed, for taking the d. c. voltage signal of voltage transformer secondary side and carrying out the voltage sample module 5 of AD conversion, for taking the current signal of direct current arrester 4 ground side and carrying out the current sample module 6 of AD conversion, for measuring the DC line resistance measuring module 7 from the DC line resistance between voltage signal measurement point and current signal measurement point, one end is connected with voltage sample module 5, current sample module 6 respectively, the other end is all connected with resistance meter 10 with harmonic analysis instrument 9, for realizing between voltage sample module 5 and harmonic analysis instrument 9, resistance meter 10, current sample module 6 and harmonic analysis instrument 9, between resistance meter 10 and the wireless transceiver master station 8 of DC line resistance measuring module 7 and the communication of resistance meter 10, for receiving the electric current and voltage data-signal of coming from wireless transceiver master station 8 and carrying out the harmonic analysis instrument 9 that shows accordingly and resistance meter 10.
Current sample module 6 comprises current sensor 61, temperature sensor 62, a/d conversion device 63, central processing unit 65 and wireless transceiver terminal 64, the sampling probe of current sensor 61 is serially connected in the ground loop of direct current arrester 4, the output terminal of current sensor 61 and the output terminal of temperature sensor 62 are all connected by the input end of a/d conversion device 63 with central processing unit 65, the ambient temperature data of shaft tower 2 side measured for the current data sequence and temperature sensor 62 of current sensor 61 pairs of DC current signals being carried out multiple repairing weld acquisition is sent to central processing unit 65 after analog to digital conversion, the output terminal of central processing unit 65 and the input end of wireless transceiver terminal 64 are electrically connected, for the current data sequence after the analog to digital conversion of acquisition is sent to harmonic analysis instrument 9 and resistance meter 10 by wireless transceiver terminal 64, can the ambient temperature data of shaft tower 2 side obtained by temperature sensor 62 be sent to a temperature and humidity test instrument simultaneously.
Voltage sample module 5 comprises voltage sensor 51, temperature sensor 52, a/d conversion device 53, central processing unit 55 and wireless transceiver terminal 54, the sampling probe of voltage sensor 51 is serially connected in bus-bar potential transformer secondary side, the output terminal of voltage sensor 51 is connected by the input end of a/d conversion device 53 with central processing unit 55 with temperature sensor 52, the ambient temperature data of high voltage dc bus 1 side measured for the voltage data sequence and temperature sensor 52 of voltage sensor 51 pairs of direct voltage output signals being carried out multiple repairing weld acquisition is sent to central processing unit 55 after analog to digital conversion, the output terminal of central processing unit 55 and the input end of wireless transceiver terminal 54 are electrically connected, for the voltage data sequence after the analog to digital conversion of acquisition is sent to harmonic analysis instrument 9 and resistance meter 10 by wireless transceiver terminal 54, can the ambient temperature data of high voltage dc bus 1 side obtained by temperature sensor 52 be sent to another temperature and humidity test instrument simultaneously.
Please refer to shown in Fig. 2, DC line resistance measuring module 7 comprises DC voltage power supply 72, reometer 73, reometer 74, chopper switch 75, earthing device 76, a/d conversion device 77, wireless transceiver terminal 78, the resistance of DC line 71 is the target measured, DC line 71 comprises pole 1 circuit and pole 2 circuit, wherein, the disconnected chalaza that pole 1 circuit and pole 2 circuit are formed with high voltage dc bus 1 is respectively designated as A point and B point respectively, and direct current arrester 4 and DC line 71 form current signal measurement point and lay respectively at C point on pole 1 circuit and pole 2 circuit and D point.Wherein, DC voltage power supply 72 is positioned at high voltage dc bus side, for providing the power supply measuring test, reometer 73 is connected with DC line 71 and DC voltage power supply 72 respectively with reometer 74, for reading the magnitude of current that test is measured, wherein, the two ends of reometer 73 connect A point and DC voltage power supply 72 respectively, and the two ends of reometer 74 connect B point and DC voltage power supply 72 respectively.The chopper switch 75 being positioned at high voltage dc bus side is tested to carry out measurement for high voltage dc bus 1 of cutting off the electricity supply, the route survey that the different switchings of the switch that DC voltage power supply 72 and DC line 71 are broken on chopper switch 75 between conjunction place and earthing device 76 and between DC line 71 realize different conditions is tested, earthing device 76 is connected with DC line 71 by switch, particularly, earthing device 76 comprises switch S 4, switch S 5, switch S 6, one end of switch S 4 is connected to C point, the other end is by switch S 6 ground connection, the two ends of switch S 5 are connected to D point and between switch S 4 and switch S 6 respectively, connected by chopper switch 75 between voltage signal measurement point and high voltage dc bus 1, the magnitude of voltage that the DC line current value that the two is all recorded by wireless transceiver terminal 78 by a/d conversion device 77 by reometer 73 and the output terminal of reometer 74 is communicated with DC voltage power supply 72 is again sent to resistance meter 10, it should be noted that, this DC line resistance measuring module 7 only (voltage sample module 5 and current sample module 6 detect before) need carry out one-shot measurement, later without the need to again measuring before direct current arrester live detection.
Measuring process is: first, Closing Switch S1, S2, S4 and S5, and cut-off switch S3 and S6, please refer to shown in Fig. 3.Now, pole 1 circuit and the series connection of pole 2 line resistance, the first reometer is identical with the reading of the second reometer, is I
1;
Step 12, Closing Switch S1, S3, S4 and S6, cut-off switch S2 and S5, please refer to shown in Fig. 4.Now, pole 1 circuit and ground resistance series connection, namely the reading of the first reometer flows through the current value of pole 1 circuit, is designated as I
2, the second reometer non-metering;
Step 13, Closing Switch S2, S3, S5 and S6, cut-off switch S1 and S4, please refer to shown in Fig. 5.Now, pole 2 circuit and ground resistance series connection, the first reometer non-metering, namely the reading of the second reometer flows through the current value of pole 2 circuit, is designated as I
3.Based on above-mentioned three current values, be sent to the actual voltage value in conjunction with DC voltage power supply 72 after resistance meter 10, the resistance value of DC line 71 can be obtained, shown by resistance meter 10 simultaneously.
Wireless transceiver master station 8 one end is connected with resistance meter 10 with harmonic analysis instrument 9, and the other end to be then connected with wireless transceiver terminal 78 by wireless network and the wireless transceiver terminal 54 in voltage sample module 5, current sample module 6 and DC line resistance measuring module 7, wireless transceiver terminal 64 and to realize communication.Wireless transceiver terminal 54, wireless transceiver terminal 64, wireless transceiver terminal 78 and wireless transceiver master station 8 are wireless router.When harmonic analysis instrument 9 and voltage sample module 5 and 6 communication of current sample module, the voltage data sequence after analog to digital conversion that voltage sample module 5 and current sample module 6 can be exported and circuit data sequence carry out showing (can split screen display or single screen show multiple data).When resistance meter 10 and voltage sample module 5 and 6 communication of current sample module, the resistance value of direct current arrester 4 can be obtained voluntarily in conjunction with the data of the two.
In embodiment, high voltage dc bus 1 can adopt the one pole H type aluminium trolley HXPnR-H of Tian Bao, Yangzhou group company, bus-bar potential transformer 3 can adopt the TAK type of Yao Hua Dechang Electronics Co., Ltd., direct current arrester 4 can adopt the AM type direct supply lightning protection device of Guangdong An Xun lightning protection Science and Technology Co., Ltd., the voltage sensor 51 HV series voltage sensor of Beijing New Chuang Si Fang Electronic Co., Ltd., current sensor 61 can adopt the B1 DC leakage flow sensor LF-MI11-35B1-1.0/0 ~ ± 10mA model of Shenzhen Xin Ruida company, temperature sensor 52, temperature sensor 62 can adopt the T80 electronic temp switch (sensor) of Shanghai Jia Tu automation control system company limited, a/d conversion device 53, a/d conversion device 63 and a/d conversion device 77 can adopt the AD876 model of Wei Xue Electronics Co., Ltd. of Shenzhen, central processing unit 55, central processing unit 65 can adopt the single-chip microcomputer of Weisheng, Shenzhen hundred million generation Science and Technology Ltd., DC voltage power supply 72 can adopt the PDP series high-power direct supply of Fu Anjie Industrial Co., Ltd. of Shenzhen, reometer 73 and reometer 74 can adopt the digital DC table CAKJ series of Xuchang Chang An Science and Technology Ltd., chopper switch 75 can adopt the fixed 3P isolating switch of length nine breaker of plastic casing MB30-400 series 200 ~ 400A of Shenzhen Taiyong Electric Technology Co., Ltd., earthing device 76 can adopt the TB series of ground module of Beijing Guo electricity Tianbang Science and Technology Co., Ltd., wireless transceiver terminal 54, wireless transceiver terminal 64, wireless transceiver terminal 78 and wireless transceiver master station 8 all can adopt the SOHO wireless router of B-Link, harmonic analysis instrument 9 can adopt the MI2092 type Electric Power Harmonic Analysis instrument of U.S. emerald green (METREL) company of Germany, resistance meter 10 can adopt the MIT1020/2 type Insulation Resistance Tester of megger company of the U.S..
Above-listed detailed description is illustrating for the utility model possible embodiments, and this embodiment is also not used to limit the scope of the claims of the present utility model, does not allly depart from the equivalence that the utility model does and implements or change, and all should be contained in the scope of the claims of this case.
Claims (8)
1. a DC line direct current arrester electrification detection system, is characterized in that, it comprises:
High voltage dc bus (1), for generation of d. c. voltage signal;
Shaft tower (2), is connected by DC line (71) between described shaft tower (2) with high voltage dc bus (1);
Bus-bar potential transformer (3), primary side and the high voltage dc bus (1) of described bus-bar potential transformer (3) are electrically connected, for converting described d. c. voltage signal, the direct voltage output signal after the secondary side of bus-bar potential transformer (3) produces a conversion;
Direct current arrester (4), be installed on described shaft tower (2) side, primary side and the DC line (71) of described direct current arrester (4) are electrically connected, form current signal measurement point, described d. c. voltage signal produces a DC current signal in the ground side of direct current arrester (4) after flowing through direct current arrester (4) by DC line (71);
Voltage sample module (5), the input end of described voltage sample module (5) and the secondary side of bus-bar potential transformer (3) are electrically connected, for carrying out multiple repairing weld to described direct voltage output signal, obtain the voltage data sequence of sampling;
Current sample module (6), the input end of described current sample module (6) and the ground loop of direct current arrester (4) are electrically connected, for carrying out multiple repairing weld to described DC current signal, obtain the current data sequence of sampling;
Display unit, described display unit comprises harmonic analysis instrument (9) and resistance meter (10); Wherein, described harmonic analysis instrument (9) is for receiving and showing the information of described current data sequence, voltage data sequence; Described resistance meter (10) for receive described current data sequence, voltage data sequence information and show the DC resistance of direct current arrester (4).
2. DC line direct current arrester electrification detection system according to claim 1, it is characterized in that, described current sample module (6) comprises current sensor (61), first a/d conversion device (63), first central processing unit (65) and the first wireless transceiver terminal (64), the sampling probe of described current sensor (61) is serially connected in the ground loop of direct current arrester (4), the output terminal of described current sensor (61) is all connected by the input end of the first a/d conversion device (63) with the first central processing unit (65), for current sensor (61) is sent to the first central processing unit (65) to the current data sequence that described DC current signal carries out multiple repairing weld acquisition after analog to digital conversion, the output terminal of described first central processing unit (65) and the input end of the first wireless transceiver terminal (64) are electrically connected, for the current data sequence after the analog to digital conversion obtained is sent to harmonic analysis instrument (9) and resistance meter (10) by the first wireless transceiver terminal (64).
3. DC line direct current arrester electrification detection system according to claim 2, it is characterized in that, described voltage sample module (5) comprises voltage sensor (51), second a/d conversion device (53), second central processing unit (55) and the second wireless transceiver terminal (54), the sampling probe of described voltage sensor (51) is serially connected in bus-bar potential transformer secondary side, the output terminal of described voltage sensor (51) is connected with the input end of the second central processing unit (55) by the second a/d conversion device (53), for voltage sensor (51) is sent to the second central processing unit (55) to the voltage data sequence that described direct voltage output signal carries out multiple repairing weld acquisition after analog to digital conversion, the output terminal of described second central processing unit (55) and the input end of the second wireless transceiver terminal (54) are electrically connected, for the voltage data sequence after the analog to digital conversion obtained is sent to harmonic analysis instrument (9) and resistance meter (10) by the second wireless transceiver terminal (54).
4. DC line direct current arrester electrification detection system according to claim 3, it is characterized in that, described DC line (71) comprises pole 1 circuit and pole 2 circuit, wherein, the disconnected chalaza that pole 1 circuit and pole 2 circuit are formed with high voltage dc bus (1) is respectively designated as A point and B point respectively, and the current signal measurement point that the primary side of described direct current arrester (4) and DC line (71) are formed lays respectively at C point on pole 1 circuit and pole 2 circuit and D point.
5. DC line direct current arrester electrification detection system according to claim 4, it is characterized in that, described DC line direct current arrester electrification detection system comprises a DC line resistance measuring module (7) further, for measuring DC line current value by an external DC voltage power supply, described DC line current value is sent in resistance meter (10), to show DC line resistance value, described DC line resistance value is the resistance of the DC line (71) between high voltage dc bus (1) and current signal measurement point.
6. DC line direct current arrester electrification detection system according to claim 5, it is characterized in that, described DC line resistance measuring module (7) comprises DC voltage power supply (72), the first reometer (73), the second reometer (74), chopper switch (75), earthing device (76), the 3rd a/d conversion device (77), the 3rd wireless transceiver terminal (78); Wherein, two output terminals of DC voltage power supply (72) are connected to A point and B point respectively, its input end is by switch S 3 ground connection, be connected in series the first reometer (73) and switch S 1 between described A point and DC voltage power supply (72), between described B point and DC voltage power supply (72), be connected in series the second reometer (74) and switch S 2; Described earthing device (76) comprises switch S 4, switch S 5, switch S 6, and one end of described switch S 4 is connected to C point, and the other end is by switch S 6 ground connection, and the two ends of described switch S 5 are connected to D point and between switch S 4 and switch S 6 respectively; Disconnected conjunction place between described DC line (71) and high voltage dc bus (1) is connected by chopper switch (75); The DC line current value that the two is all recorded by the 3rd wireless transceiver terminal (78) by the 3rd a/d conversion device (77) by the output terminal of described first reometer (73) and the second reometer (74) is sent to resistance meter (10).
7. DC line direct current arrester electrification detection system according to claim 6, it is characterized in that, described harmonic analysis instrument (9) and resistance meter (10) are all by a wireless transceiver master station (8) and voltage sample module (5), current sample module (6) and DC line resistance measuring module (7) carry out wireless telecommunications, the input end of described wireless transceiver master station (8) respectively with the first wireless transceiver terminal (64), the output terminal wireless connections of the second wireless transceiver terminal (54) and the 3rd wireless transceiver terminal (78), the output terminal of described wireless transceiver master station (8) is connected with resistance meter (10) respectively with harmonic analysis instrument (9).
8. DC line direct current arrester electrification detection system according to claim 6, it is characterized in that, described wireless transceiver master station (8), the first wireless transceiver terminal (64), the second wireless transceiver terminal (54) and the 3rd wireless transceiver terminal (78) are wireless router.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116003.1U CN204479672U (en) | 2015-02-25 | 2015-02-25 | A kind of DC line direct current arrester electrification detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520116003.1U CN204479672U (en) | 2015-02-25 | 2015-02-25 | A kind of DC line direct current arrester electrification detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479672U true CN204479672U (en) | 2015-07-15 |
Family
ID=53635459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520116003.1U Active CN204479672U (en) | 2015-02-25 | 2015-02-25 | A kind of DC line direct current arrester electrification detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204479672U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816801A (en) * | 2020-08-28 | 2021-05-18 | 苏州灵成电气有限公司 | Transformer arrester detecting system |
-
2015
- 2015-02-25 CN CN201520116003.1U patent/CN204479672U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112816801A (en) * | 2020-08-28 | 2021-05-18 | 苏州灵成电气有限公司 | Transformer arrester detecting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104698311B (en) | A kind of DC line direct current arrester live detection method | |
| CN105388374A (en) | Converter station DC field neutral bus lightning arrester charged analysis device and method | |
| CN103323751B (en) | A kind of high pressure stub cable insulation terminal local discharge test device and using method | |
| CN204188757U (en) | Portable power equipment leakage point insulating pick-up unit | |
| CN203276027U (en) | Digital dynamic closed-loop test system of electricity smooth and steady supply device | |
| CN101403779B (en) | Parameter measuring apparatus and system for high tension power line | |
| CN103728481A (en) | Method and device for detecting metal oxide arrester resistive current | |
| CN201327509Y (en) | High-voltage transmission line parameter measuring device and system thereof | |
| CN101614798B (en) | Polarity detection system of electronic transformer | |
| CN204479671U (en) | A kind of DC converter station direct current arrester electrification detection system | |
| CN104007354B (en) | The total group test circuit and method of 10kV Zinc-Oxide Arresters and cable | |
| CN104698312B (en) | A kind of DC converter station direct current arrester electrification detection system and method | |
| CN204479654U (en) | A kind of alternating current circuit alternating-current lightning arrestor electrification detection system | |
| CN204479672U (en) | A kind of DC line direct current arrester electrification detection system | |
| CN109142873B (en) | Full-loop direct current resistance testing method for rail transit direct current power supply system | |
| CN105807193B (en) | A kind of same frequency with safe sampled signal is the same as phase Withstand test device | |
| CN105203886A (en) | Capacitive type current transformer online detection device and method | |
| CN203216999U (en) | Capacitive equipment dielectric loss live line measurement sampling device | |
| KR100547967B1 (en) | Fault Locating System of Lightning for Overhead Transmission Line | |
| CN206362860U (en) | A kind of test device of GIS or GIL equipment loop resistance | |
| CN205176158U (en) | Electric capacity type current transformer on -line measuring device | |
| CN104698278B (en) | A kind of alternating current circuit alternating-current lightning arrestor electrification detection system and method | |
| CN203587699U (en) | Insulation resistance testing device | |
| CN103308799B (en) | The Apparatus and method for that a kind of cable-line parameter be connected with GIS is measured | |
| CN201464596U (en) | Electronic transducer polarity detecting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |