CN108845195A - A kind of DC converter station earthing pole parameter tester - Google Patents
A kind of DC converter station earthing pole parameter tester Download PDFInfo
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- CN108845195A CN108845195A CN201810335053.7A CN201810335053A CN108845195A CN 108845195 A CN108845195 A CN 108845195A CN 201810335053 A CN201810335053 A CN 201810335053A CN 108845195 A CN108845195 A CN 108845195A
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- output interface
- converter station
- phase alternating
- earthing pole
- alternating current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- General Physics & Mathematics (AREA)
- Rectifiers (AREA)
Abstract
The present invention relates to a kind of DC converter station earthing pole parameter testers, including rectification control cabinet, induction voltage regulator, isolating transformer cabinet, portable reference electrode and position indicator.Induction voltage regulator uses three-phase induction regulator, and the continuously adjustable operating voltage of 6-500V can be provided for test device, meets the requirement of different measuring distances.In order to improve measuring accuracy and accuracy, to the current requirements of injection earthing pole power grid can current stabilization run, and output current wave is smooth as far as possible, rectifies in control cabinet and is equipped with the LC filter being made of reactor and electrolytic capacitor, reduces pulsation amplitude.The input power of tester generally takes to the station local coordinate frame of converter station, is limited by capacity, the output current value of direct current test apparatus, and generally in 200A, capacity is no more than 200KW, is equipped with output over-voltage protection, exports overcurrent protection.
Description
Technical field
The present invention relates to a kind of direct current grounding pole parameter test devices.
Background technique
Direct current electric transmission and transformation mode is more and more used in China's power transmission at present, the ground connection dress in DC converter station
The situation of setting is directly related to the safe operation of electric system, the various characteristics parameter of scientific and reasonable test earthing or grounding means, accurately
It is particularly significant to assess its situation.
Summary of the invention
The present invention for the technical problems in the prior art, provides a kind of DC converter station earthing pole parameter testing
Instrument.
The technical solution that the present invention solves above-mentioned technical problem is as follows：
A kind of DC converter station earthing pole parameter tester, including rectification control cabinet, induction voltage regulator, isolating transformer
Cabinet, portable reference electrode and position indicator；
The first three-phase alternating current input interface, three-phase alternating current output interface, pressure regulator are equipped in the rectification control cabinet
Control loop, control output interface, the second three-phase alternating current input interface, rectifier and DC output interface, the described 1st
The external three-phase alternating-current supply of phase alternating current input interface, the three-phase alternating current output interface and first three-phase alternating current are defeated
Incoming interface connection, the voltage-adjustable control loop include the first control breaker and the second control breaker, and first control is disconnected
Road device is connected between the first three-phase alternating current input interface and the three-phase alternating current output interface, second open circuit
Device is connected between the first three-phase alternating current input interface and the control output interface；The rectifier is three-phase bridge
Rectification circuit, the input terminal of the three-phase bridge rectifier circuit are connect with the second three-phase alternating current input interface, and described three
The output end of phase bridge rectifier is connect with DC output interface；
The induction voltage regulator is three-phase induction regulator, the input terminal of the induction voltage regulator and the rectification control cabinet
Three-phase alternating current output interface connection, the transformer primary side of the output end of the induction voltage regulator and the isolating transformer cabinet
Coil connection, the asynchronous motor control end of the induction voltage regulator are connect with the control output interface of the rectification control cabinet；
Second three-phase alternating current of the secondary transformer of the isolating transformer cabinet and the rectification control cabinet inputs
Interface connection.
Portable reference electrode selects portable copper sulfate reference electrode, meets easy to carry.Electrode potential is stablized, electrode
It is not easy to polarize, the feature of service life length is suitable for scene and uses, for measuring the natural potential and cathodic protection electricity of underground metal pipes
Position measures the stray electrical current in soil, measures the current potential of cable metal sheath and reinforcement in concrete.
Further, in the three-phase bridge rectifier circuit, the both ends of each diode are parallel with RC resistance capaciting absorpting circuit.
Further, the rectifier further includes the LC filter circuit being made of reactor and electrolytic capacitor, the reactance
Device is series between an output end of the three-phase bridge rectifier circuit and DC output interface, the both ends of the electrolytic capacitor
It connects between the positive and negative anodes of the DC output interface.
Further, the LC filter circuit includes two groups, six capacitors, and every group is connected by three capacitors, and two groups of capacitors are simultaneously
Connection is followed by between the positive and negative anodes of the DC output interface.
Further, DC voltage sample circuit is also connected between the positive and negative anodes of the DC output interface.
Further, the DC voltage sample circuit includes DC voltage divider circuit and the voltmeter that can limit, the direct current point
Volt circuit is made of three resistance, and the three resistance series connection is followed by between the positive and negative anodes of the DC output interface, wherein
Interlaminated resistance is slide rheostat, and the voltmeter of limiting is in parallel with the interlaminated resistance.
Further, the voltmeter of limiting is also connected with normally opened relay, when sampling voltage is more than limit value, can set
Voltage limit table controls normally opened relay closure, alarms.
Further, the cathode of the DC output interface is connected with DC current sample circuit.
Further, the DC current sample circuit include the current divider that is connect with the cathode of the DC output interface with
And the DC ammeter of limiting being connect with the current divider.
Further, the DC ammeter of limiting is also connected with normally opened relay, when sampling current is more than limit value,
The DC ammeter that can limit controls normally opened relay closure, alarms.
The beneficial effects of the invention are as follows：Electrical integrity mainly tests each part DC resistance of earthing or grounding means, usually
It is differed for tens kilometers of distance between converter station and grounded screen circuit, it is desirable that earthing pole parameter tester output voltage can be arrived tens
It is continuously adjusted between several hectovolts, meets the requirement of different measuring distances, using three-phase induction regulator, 6- can be provided for test device
500V continuously adjustable operating voltage.In order to improve measuring accuracy and accuracy, to the current requirements energy of injection earthing pole power grid
Enough current stabilization operations, and output current wave is smooth as far as possible, tester is equipped with the LC filter being made of reactor and electrolytic capacitor
Wave device reduces pulsation amplitude.The input power of tester generally takes to the station local coordinate frame of converter station, is limited by capacity,
The output current value of direct current test apparatus, generally in 200A, capacity is no more than 200KW, is equipped with output over-voltage protection, exported
Current protection.
Detailed description of the invention
Fig. 1 is a kind of DC converter station earthing pole parameter tester control principle drawing provided by the invention；
Fig. 2 is a kind of DC converter station earthing pole parameter tester electrical structure diagram provided by the invention.
Specific embodiment
Principles and features of the present invention are described below in conjunction with example, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As shown in Fig. 1 Fig. 2, a kind of DC converter station earthing pole parameter tester, including rectification control cabinet, Induction Regulation
Device, isolating transformer cabinet, portable reference electrode and position indicator；
The first three-phase alternating current input interface, three-phase alternating current output interface, pressure regulator are equipped in the rectification control cabinet
Control loop, control output interface, the second three-phase alternating current input interface, rectifier and DC output interface, the described 1st
The external three-phase alternating-current supply of phase alternating current input interface, the three-phase alternating current output interface and first three-phase alternating current are defeated
Incoming interface connection, the voltage-adjustable control loop include the first control breaker and the second control breaker, and first control is disconnected
Road device is connected between the first three-phase alternating current input interface and the three-phase alternating current output interface, second open circuit
Device is connected between the first three-phase alternating current input interface and the control output interface；The rectifier is three-phase bridge
Rectification circuit, the input terminal of the three-phase bridge rectifier circuit are connect with the second three-phase alternating current input interface, and described three
The output end of phase bridge rectifier is connect with DC output interface；
The induction voltage regulator is three-phase induction regulator, the input terminal of the induction voltage regulator and the rectification control cabinet
Three-phase alternating current output interface connection, the transformer primary side of the output end of the induction voltage regulator and the isolating transformer cabinet
Coil connection, the asynchronous motor control end of the induction voltage regulator are connect with the control output interface of the rectification control cabinet；
Second three-phase alternating current of the secondary transformer of the isolating transformer cabinet and the rectification control cabinet inputs
Interface connection.
Portable reference electrode selects portable copper sulfate reference electrode, meets easy to carry.Electrode potential is stablized, electrode
It is not easy to polarize, the feature of service life length is suitable for scene and uses, for measuring the natural potential and cathodic protection electricity of underground metal pipes
Position measures the stray electrical current in soil, measures the current potential of cable metal sheath and reinforcement in concrete.
Further, in the three-phase bridge rectifier circuit, the both ends of each diode are parallel with RC resistance capaciting absorpting circuit.
Further, the rectifier further includes the LC filter circuit being made of reactor and electrolytic capacitor, the reactance
Device is series between an output end of the three-phase bridge rectifier circuit and DC output interface, the both ends of the electrolytic capacitor
It connects between the positive and negative anodes of the DC output interface.
Further, the LC filter circuit includes two groups, six capacitors, and every group is connected by three capacitors, and two groups of capacitors are simultaneously
Connection is followed by between the positive and negative anodes of the DC output interface.
Further, DC voltage sample circuit is also connected between the positive and negative anodes of the DC output interface.
Further, the DC voltage sample circuit includes DC voltage divider circuit and the voltmeter that can limit, the direct current point
Volt circuit is made of three resistance, and the three resistance series connection is followed by between the positive and negative anodes of the DC output interface, wherein
Interlaminated resistance is slide rheostat, and the voltmeter of limiting is in parallel with the interlaminated resistance.
Further, the voltmeter of limiting is also connected with normally opened relay, when sampling voltage is more than limit value, can set
Voltage limit table controls normally opened relay closure, alarms.
Further, the cathode of the DC output interface is connected with DC current sample circuit.
Further, the DC current sample circuit include the current divider that is connect with the cathode of the DC output interface with
And the DC ammeter of limiting being connect with the current divider.
Further, the DC ammeter of limiting is also connected with normally opened relay, when sampling current is more than limit value,
The DC ammeter that can limit controls normally opened relay closure, alarms.
The beneficial effects of the invention are as follows：Electrical integrity mainly tests each part DC resistance of earthing or grounding means, usually
It is differed for tens kilometers of distance between converter station and grounded screen circuit, it is desirable that earthing pole parameter tester output voltage can be arrived tens
It is continuously adjusted between several hectovolts, meets the requirement of different measuring distances, using three-phase induction regulator, 6- can be provided for test device
500V continuously adjustable operating voltage.In order to improve measuring accuracy and accuracy, to the current requirements energy of injection earthing pole power grid
Enough current stabilization operations, and output current wave is smooth as far as possible, tester is equipped with the LC filter being made of reactor and electrolytic capacitor
Wave device reduces pulsation amplitude.The input power of tester generally takes to the station local coordinate frame of converter station, is limited by capacity,
The output current value of direct current test apparatus, generally in 200A, capacity is no more than 200KW, is equipped with output over-voltage protection, exported
Current protection.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of DC converter station earthing pole parameter tester, which is characterized in that including rectification control cabinet, induction voltage regulator, every
From transformer case, portable reference electrode and position indicator；
The first three-phase alternating current input interface, three-phase alternating current output interface, pressure regulator control are equipped in the rectification control cabinet
Circuit, control output interface, the second three-phase alternating current input interface, rectifier and DC output interface, the one or three intersection
The external three-phase alternating-current supply of galvanic electricity input interface, the three-phase alternating current output interface connect with first three-phase alternating current input
Mouth connection, the voltage-adjustable control loop include the first control breaker and the second control breaker, and described first controls breaker
It is connected between the first three-phase alternating current input interface and the three-phase alternating current output interface, second breaker connects
It is connected between the first three-phase alternating current input interface and the control output interface；The rectifier is three-phase bridge rectification
Circuit, the input terminal of the three-phase bridge rectifier circuit are connect with the second three-phase alternating current input interface, the three-phase bridge
The output end of formula rectification circuit is connect with DC output interface；
The induction voltage regulator is three-phase induction regulator, the input terminal of the induction voltage regulator and the three of the rectification control cabinet
The connection of phase alternating current output interface, the primary transformer coil of the output end of the induction voltage regulator and the isolating transformer cabinet
Connection, the asynchronous motor control end of the induction voltage regulator are connect with the control output interface of the rectification control cabinet；
Second three-phase alternating current input interface of the secondary transformer of the isolating transformer cabinet and the rectification control cabinet
Connection.
2. a kind of DC converter station earthing pole parameter tester according to claim 1, which is characterized in that the three-phase bridge
In rectification circuit, the both ends of each diode are parallel with RC resistance capaciting absorpting circuit.
3. a kind of DC converter station earthing pole parameter tester according to claim 1, which is characterized in that the rectifier is also
Including the LC filter circuit being made of reactor and electrolytic capacitor, the reactor is series at the three-phase bridge rectifier circuit
An output end and DC output interface between, the positive and negative anodes of DC output interface described in two end Jie of the electrolytic capacitor
Between.
4. a kind of DC converter station earthing pole parameter tester according to claim 3, which is characterized in that the LC filtered electrical
Road includes two groups, six capacitors, and every group is connected by three capacitors, two groups of capacitor parallel connections be followed by the DC output interface just
Between cathode.
5. a kind of DC converter station earthing pole parameter tester according to claim 1, which is characterized in that the direct current output
DC voltage sample circuit is also connected between the positive and negative anodes of interface.
6. a kind of DC converter station earthing pole parameter tester according to claim 5, which is characterized in that the DC voltage
Sample circuit includes DC voltage divider circuit and the voltmeter that can limit, and the DC voltage divider circuit is made of three resistance, and described three
The series connection of a resistance is followed by between the positive and negative anodes of the DC output interface, and wherein interlaminated resistance is slide rheostat, it is described can
Voltmeter of limiting is in parallel with the interlaminated resistance.
7. a kind of DC converter station earthing pole parameter tester according to claim 6, which is characterized in that the electricity of limiting
Pressure table is also connected with normally opened relay, and when sampling voltage is more than limit value, the voltmeter that can limit controls normally opened relay closure,
It alarms.
8. a kind of DC converter station earthing pole parameter tester according to claim 1, which is characterized in that the direct current output
The cathode of interface is connected with DC current sample circuit.
9. a kind of DC converter station earthing pole parameter tester according to claim 8, which is characterized in that the DC current
Sample circuit includes the current divider connecting with the cathode of the DC output interface and limits with what the current divider was connect
DC ammeter.
10. a kind of DC converter station earthing pole parameter tester according to claim 9, which is characterized in that described to limit
DC ammeter is also connected with normally opened relay, and when sampling current is more than limit value, the DC ammeter that can limit control is normally opened
Relay closure, alarms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810335053.7A CN108845195A (en) | 2018-04-15 | 2018-04-15 | A kind of DC converter station earthing pole parameter tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810335053.7A CN108845195A (en) | 2018-04-15 | 2018-04-15 | A kind of DC converter station earthing pole parameter tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108845195A true CN108845195A (en) | 2018-11-20 |
Family
ID=64212067
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810335053.7A Pending CN108845195A (en) | 2018-04-15 | 2018-04-15 | A kind of DC converter station earthing pole parameter tester |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793028A (en) * | 2015-04-30 | 2015-07-22 | 中国一冶集团有限公司 | Three-phase multifunctional test power supply device and test method thereof |
| CN204536455U (en) * | 2015-04-24 | 2015-08-05 | 永济新时速电机电器有限责任公司 | High power Traction AuCT test system |
| CN206671444U (en) * | 2017-03-21 | 2017-11-24 | 武汉市整流器研究所 | Direct current grounding pole parameter detection device |
| CN107478929A (en) * | 2017-08-03 | 2017-12-15 | 国网四川省电力公司电力科学研究院 | A kind of multifunctional mobile earthing or grounding means test system |
-
2018
- 2018-04-15 CN CN201810335053.7A patent/CN108845195A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204536455U (en) * | 2015-04-24 | 2015-08-05 | 永济新时速电机电器有限责任公司 | High power Traction AuCT test system |
| CN104793028A (en) * | 2015-04-30 | 2015-07-22 | 中国一冶集团有限公司 | Three-phase multifunctional test power supply device and test method thereof |
| CN206671444U (en) * | 2017-03-21 | 2017-11-24 | 武汉市整流器研究所 | Direct current grounding pole parameter detection device |
| CN107478929A (en) * | 2017-08-03 | 2017-12-15 | 国网四川省电力公司电力科学研究院 | A kind of multifunctional mobile earthing or grounding means test system |
Non-Patent Citations (3)
| Title |
|---|
| 云玉新 等: "±660kV胶东换流站接地极参数测试分析", 《2011年中国电机工程学会年会论文集》 * |
| 周禹 等: "一种高压直流接地极现场测试方法", 《技术与市场》 * |
| 杨锋 等: "中压岸电系统故障点跨步电压研究", 《船电技术》 * |
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