CN102486482A - Resistance-capacitance (RC) equivalent load device for multi-valve test of direct-current converter valve - Google Patents
Resistance-capacitance (RC) equivalent load device for multi-valve test of direct-current converter valve Download PDFInfo
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- CN102486482A CN102486482A CN2010105766184A CN201010576618A CN102486482A CN 102486482 A CN102486482 A CN 102486482A CN 2010105766184 A CN2010105766184 A CN 2010105766184A CN 201010576618 A CN201010576618 A CN 201010576618A CN 102486482 A CN102486482 A CN 102486482A
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Abstract
The invention relates to a resistance-capacitance (RC) equivalent load device for a multi-valve test of a direct-current converter valve. The device comprises a direct-current device or an impact device 1, an equivalent load piece 2 and a test sample valve Vt, wherein the equivalent load piece 2 comprises a resistor R1, a resistor R2, a capacitor C1, a capacitor C2 and a lightning arrester 3; the resistor R2 and the capacitor C1 are connected in series with each other to form an R2-C1 branch circuit; the lightning arrester 3, the resistor R1, the R2-C1 branch circuit and the capacitor C2 are connected in parallel with one another; and the lightning arrester 3 is a 500KV direct-current lightning arrester, and consists of nonlinear resistors which are connected in series and parallel with one another. The RC equivalent load device can meet requirements of all multi-valve test items, such as a direct-current withstand voltage test, an operating impact test, a lightning impact test, a steep impact test and the like.
Description
Technical field
The present invention relates to a kind of DC converter valve multiplex valve type approval test device, specifically relate to the RC equivalent load device of a kind of DC converter valve multiplex valve type approval test.
Background technology
The direct current transportation technology is because its technical and economy obtains over nearly 30 years widely applying, and modal application is to exchange networking and long distance powedr transmission back-to-back.The equipment of DC engineering most critical is current conversion station, and DC converter valve is the core component of current conversion station.For guaranteeing the reliability of DC engineering, DC converter valve supplier must carry out type approval test to DC converter valve, comprises Insulation Test and running test.The multiplex valve type approval test is the important component part of Insulation Test, and it comprises DC voltage withstand test, switching impulse test, lightning impulse test and steep front-of-wave test.Multiplex valve type approval test purpose be in the withstand voltage ability, multiple valve unit structure of check multiple valve unit exterior insulation the withstand voltage ability between each single valve and local discharging level in the scope of regulation.In the multiplex valve type approval test, need to use equivalent load and test product valve to be composed in series the complete test product of multiplex valve test, should guarantee that in test the test product two ends bear the voltage of regulation amplitude, and equivalent load and test product valve dividing potential drop concern and meet the demands.
Summary of the invention
Demand for the DC voltage withstand test, switching impulse test, lightning impulse test and the steep wave impulse test that satisfy the multiplex valve type approval test.The present invention provides the RC equivalent load device of a kind of DC converter valve multiplex valve type approval test, and this device can satisfy the requirement of different schemes DC converter valve multiplex valve type approval test equivalent loads such as conventional high voltage direct current transmission project, super high voltage direct current electricity transmission engineering and extra-high voltage direct-current transmission engineering.
For realizing above-mentioned purpose, the present invention adopts following proposal:
The RC equivalent load device of a kind of DC converter valve multiplex valve type approval test, its improvements are: said device comprises flow directing device or percussion mechanism 1, equivalent load part 2 and test product valve Vt; Said equivalent load part 2 comprises resistance R 1, resistance R 2, capacitor C 1, capacitor C 2 and lightning arrester 3; Said resistance R 2 is connected with capacitor C 1 successively, constitutes the R2-C1 branch road; Said lightning arrester 3, resistance R 1, R2-C1 branch road and capacitor C 2 be parallel connection successively; The direct current lightning arrester that said lightning arrester 3 is 500KV, said lightning arrester 3 is made up of the non-linear resistance series and parallel.
A kind of optimized technical scheme provided by the invention is: said equivalent load part 2 be connected on and test product valve Vt between.
Second kind of optimized technical scheme provided by the invention is: said flow directing device or percussion mechanism 1 two ends are connected with test product valve Vt respectively at ground and are parallelly connected with equivalent load part 2.
Compared with prior art, beneficial effect of the present invention is:
1. the RC equivalent load device of DC converter valve multiplex valve provided by the invention type approval test can satisfy the demand of different schemes DC converter valve multiplex valve type approval tests such as conventional high voltage DC engineering, super high voltage direct current electricity transmission engineering and extra-high voltage direct-current transmission engineering.
2. novel succinct, the complete function of the RC equivalent load test unit topology of DC converter valve multiplex valve provided by the invention type approval test can satisfy all pattern pilot projects of multiplex valve simultaneously.
3. the RC type equivalent load device of DC converter valve multiplex valve provided by the invention type approval test can satisfy all pilot projects of multiplex valve; The multiplex valve type approval test comprises DC voltage withstand test, switching impulse test, lightning impulse test and steep wave impulse test, saves manufacturing cost and test floor area.
4. the RC equivalent load device of DC converter valve multiplex valve provided by the invention type approval test has taken into full account the safeguard measure of various failure conditions, and device reliability is high.
Description of drawings
Fig. 1 is the schematic diagram of the RC equivalent load device of DC converter valve multiplex valve type approval test;
Fig. 2 is the DC voltage withstand test voltage waveform of test product valve;
Fig. 3 is the switching impulse test voltage waveform of test product valve;
Fig. 4 is the lightning impulse test voltage waveform of test product valve;
Fig. 5 is the steep wave impulse test voltage waveform of test product valve;
Wherein: R1, R2-resistance, C1, C2-electric capacity.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further detailed description.
Fig. 1 is the schematic diagram of the RC equivalent load device of DC converter valve multiplex valve type approval test, and this device comprises flow directing device or percussion mechanism 1, equivalent load part 2 and test product valve Vt; Equivalent load part 2 comprises resistance R 1, resistance R 2, capacitor C 1, capacitor C 2 and lightning arrester 3; Resistance R 2 is connected with capacitor C 1 successively, constitutes the R2-C1 branch road; Lightning arrester 3, resistance R 1, R2-C1 branch road and capacitor C 2 be parallel connection successively; Equivalent load part 2 be connected on and test product valve Vt between; Flow directing device or percussion mechanism 1 two ends are connected with test product valve Vt respectively at ground and are parallelly connected with equivalent load part 2; Lightning arrester 3 is direct current lightning arresters of 500KV, is made up of the non-linear resistance series and parallel, and the size of the resistance value that the non-linear resistance series and parallel is formed depends on the rated current of test product valve Vt.
When carrying out the multiplex valve type approval test, trial voltage is applied among Fig. 1 between the A point and ground, and equivalent load part 2 is connected between test product valve Vt and the ground.Below in conjunction with embodiment the present invention is done further detailed description.
In DC voltage withstand test, resistance R 1 plays a major role, and RC equivalent load device utilizes resistance R 1 to realize the dividing potential drop relation of equivalent load elements 2 and test product valve Vt in the DC voltage withstand test.Fig. 2 is the DC voltage withstand test voltage waveform of test product valve, and series connection equivalent load part 2 back test product valve Vt voltage reach peak value 220KV constantly at 200ms, and keep this value always.
In switching impulse test, capacitor C 1 plays a major role, and RC equivalent load device utilizes capacitor C 1 to realize that the dividing potential drop of equivalent load and test product valve Vt concerns in the switching impulse test.Fig. 3 is the switching impulse test voltage waveform of test product valve, and series connection equivalent load part 2 back test product valve Vt voltage reach peak value 550KV constantly at 250us.
Embodiment 3
In thunder and lightning and steep wave impulse test; The resistance of adjustment R2; Replace saturable reactor to impact dividing potential drop down and make test product valve Vt produce the voltage magnitude of regulation, utilize resistance R 2 and capacitor C 2 to realize that the dividing potential drop of equivalent load elements 2 and test product valve concerns in thunders and lightnings and the steep wave impulse test at the thunder and lightning steep wave.Fig. 4 is the voltage waveform of lightning impulse test test product valve, and the voltage of test product valve Vt reaches peak value 780KV constantly at 1.2us under lightning impulse test; Fig. 5 is the voltage waveform of steep wave impulse test test product valve, and the voltage of test product valve Vt reaches peak value 800KV constantly at 0.5us under the steep wave impulse test.
In the equivalent load part, be parallel with lightning arrester 3; Lightning arrester 3 is direct current lightning arresters of 500KV; Form by the non-linear resistance series and parallel; The size of the resistance value that the non-linear resistance series and parallel is formed depends on the rated current of test product valve Vt, and when the conducting situation appearred in test product valve Vt, impulse overvoltage can equivalent load elements 2 not cause damage.
The RC equivalent load device of a kind of DC converter valve multiplex valve provided by the invention type approval test; This RC equivalent load device can satisfy the requirement of all pilot projects of multiplex valve type approval test simultaneously, and the multiplex valve type approval test comprises DC voltage withstand test, switching impulse test, lightning impulse test and steep wave impulse test.This RC type equivalent load device circuit is simple but complete function installs novelty and practical.Test unit has taken into full account the safeguard measure under the failure condition; The reliability of device is high; And the equivalent load part can carry out modes such as SP, short circuit as required and change self parameter, satisfies the requirement of different schemes DC converter valve multiplex valve type approval test equivalent loads such as conventional high voltage direct current transmission project, super high voltage direct current electricity transmission engineering and extra-high voltage direct-current transmission engineering.
Should be noted that at last: combine the foregoing description technical scheme of the present invention only to be described but not its restriction.Under the those of ordinary skill in field be to be understood that: those skilled in the art can specific embodiments of the invention make amendment or are equal to replacement, but these modifications or change are all among the claim protection domain that application is awaited the reply.
Claims (3)
1. the RC equivalent load device of DC converter valve multiplex valve type approval test, it is characterized in that: said device comprises flow directing device or percussion mechanism 1, equivalent load part 2 and test product valve Vt; Said equivalent load part 2 comprises resistance R 1, resistance R 2, capacitor C 1, capacitor C 2 and lightning arrester 3; Said resistance R 2 is connected with capacitor C 1 successively, constitutes the R2-C1 branch road; Said lightning arrester 3, resistance R 1, R2-C1 branch road and capacitor C 2 be parallel connection successively; The direct current lightning arrester that said lightning arrester 3 is 500KV, said lightning arrester 3 is made up of the non-linear resistance series and parallel.
2. the RC equivalent load device of a kind of DC converter valve multiplex valve according to claim 1 type approval test is characterized in that: said equivalent load part 2 be connected on and test product valve Vt between.
3. the RC equivalent load device of a kind of DC converter valve multiplex valve according to claim 1 type approval test is characterized in that: said flow directing device or percussion mechanism 1 two ends are connected with test product valve Vt respectively at ground and are parallelly connected with equivalent load part 2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010576618.4A CN102486482B (en) | 2010-12-01 | 2010-12-01 | Resistance-capacitance (RC) equivalent load device for multi-valve test of direct-current converter valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010576618.4A CN102486482B (en) | 2010-12-01 | 2010-12-01 | Resistance-capacitance (RC) equivalent load device for multi-valve test of direct-current converter valve |
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| CN102486482A true CN102486482A (en) | 2012-06-06 |
| CN102486482B CN102486482B (en) | 2014-05-28 |
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| CN201010576618.4A Active CN102486482B (en) | 2010-12-01 | 2010-12-01 | Resistance-capacitance (RC) equivalent load device for multi-valve test of direct-current converter valve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106709155A (en) * | 2016-11-30 | 2017-05-24 | 国家电网公司华东分部 | Simulation calculation method for electrical power system arrester |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200979581Y (en) * | 2006-12-15 | 2007-11-21 | 天津电气传动设计研究所 | A thyristor valves equivalent load testing circuit for a high voltage inverter |
| WO2008036009A1 (en) * | 2006-09-18 | 2008-03-27 | Abb Technology Ltd. | Hvdc converter |
| CN201352251Y (en) * | 2009-01-21 | 2009-11-25 | 许继集团有限公司 | Impact test device of high voltage direct current (HVDC) power transmission converter valve |
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2010
- 2010-12-01 CN CN201010576618.4A patent/CN102486482B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008036009A1 (en) * | 2006-09-18 | 2008-03-27 | Abb Technology Ltd. | Hvdc converter |
| CN200979581Y (en) * | 2006-12-15 | 2007-11-21 | 天津电气传动设计研究所 | A thyristor valves equivalent load testing circuit for a high voltage inverter |
| CN201352251Y (en) * | 2009-01-21 | 2009-11-25 | 许继集团有限公司 | Impact test device of high voltage direct current (HVDC) power transmission converter valve |
Non-Patent Citations (1)
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| 田方 等: "云广直流输电工程换流阀多重阀单元型式试验研究", 《南方电网技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106709155A (en) * | 2016-11-30 | 2017-05-24 | 国家电网公司华东分部 | Simulation calculation method for electrical power system arrester |
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