CN109856584A - A kind of through-flow test method of 750kV converter station phase modifier system - Google Patents
A kind of through-flow test method of 750kV converter station phase modifier system Download PDFInfo
- Publication number
- CN109856584A CN109856584A CN201811347887.6A CN201811347887A CN109856584A CN 109856584 A CN109856584 A CN 109856584A CN 201811347887 A CN201811347887 A CN 201811347887A CN 109856584 A CN109856584 A CN 109856584A
- Authority
- CN
- China
- Prior art keywords
- switch
- phase modifier
- test
- differential
- power supply
- 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.)
- Granted
Links
- 239000003607 modifier Substances 0.000 title claims abstract description 87
- 238000010998 test method Methods 0.000 title claims abstract description 9
- 238000012360 testing method Methods 0.000 claims abstract description 101
- 230000004224 protection Effects 0.000 claims abstract description 63
- 238000002474 experimental method Methods 0.000 claims abstract description 48
- 230000002633 protecting effect Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 238000013461 design Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of through-flow test methods of 750kV converter station phase modifier system, it accesses the experiment power supply that voltage class is 1.05kV at the grounding switch of the mother route of phase modifier system, and with cable by phase modifier shorted on both ends so that test current can pass through bus, short leg, main transformer and each equipment of phase modifier, it can accomplish only through the primary through-flow bus differential protecting for realizing phase modifier system, short leg differential protection, the debugging of main transformer differential protection and phase modifier differential protection, the working efficiency of test can significantly be improved, reduce experimentation cost.
Description
Technical field
The present invention relates to electric system primary equipment adjustment method more particularly to a kind of 750kV converter station phase modifier systems
Through-flow test method.
Background technique
In recent years, to alleviate the contradiction between China's energy and power load distributing, extra-high voltage direct-current transmission technology is obtained quickly
Development, the Northwest establishes the direct-current transmission converter station of more 750kV.Core equipment one of of the phase modifier as converter station,
Capacity of short circuit and reactive power power output can be provided for system, ensure the safe and stable operation of ac and dc systems.
However, the secondary loop of mutual inductor of each equipment protection of phase modifier system is more complicated, built in phase modifier
In installation, often there is the problems such as current transformer ratio is incorrect, polarity is reversed, leads to false protection, tripping, influence phase modifier
The normal operation of system, to threaten the safety and stablization of ac and dc systems.Therefore, it when converter station is debugged, needs
Each parameter of polarity, no-load voltage ratio, phase for exchanging the protection institute Current Transformer of each equipment of camera system tests, adjusts work
Make.
Phase modifier system wiring structure is similar with transformer, so the debugging of phase modifier system is it is contemplated that referring to transformer
Debugging carries out through-flow test in its equipment primary side, the prior art, which has, accesses 500kV transformer one using 400V experiment power supply
The through-flow test adjustment scheme of secondary side, and the impedance of the main transformer of 750kV phase modifier system is larger, according to the examination of 400V
Electrical verification source, test current is smaller, and the current error that test is measured with table is larger or even can not measure electric current.
And the prior art to power system device carry out through-flow test debugging when, for every kind of electrical equipment be both needed into
The independent through-flow test of row, and phase modifier system includes bus, short leg, main transformer and each equipment of phase modifier, to right
This 4 kinds of equipment carry out a flow-through test, then experimental project amount is excessive, and working efficiency is lower, and need different tests
Power supply and test table, experimentation cost are higher.
Summary of the invention
The purpose of the present invention is to provide a kind of through-flow test methods of 750kV converter station phase modifier system, and this method can
So that the voltage class of experiment power supply and the current precision of test table are suitable for the tune of the 750kV converter station with high impedance
Camera system, and accomplish that the bus differential protecting for exchanging camera system, short leg only can be realized by a flow-through test
The debugging of differential protection, main transformer differential protection and phase modifier differential protection institute Current Transformer.
The object of the present invention is achieved like this:
A kind of through-flow test method of 750kV converter station phase modifier system, it is characterised in that: be suitable for 750kV converter station
The bus differential protecting of phase modifier system, short leg differential protection, main transformer differential protection, used in phase modifier differential protection
The test adjustment of current transformer, the test adjustment of test adjustment and No. 2 routes including Line 1 road:
(1) test adjustment on Line 1 road includes to No. 1 bus differential protecting, No. 1 short leg differential protection, No. 1 main transformer pressure
The test adjustment of device differential protection and No. 1 phase modifier differential protection institute Current Transformer, experiment process are as described below:
A1, it carries out the preparation before phase modifier system through-flow test: disconnecting the switch on the Line 1 road of phase modifier system
S1, grounding switch K1 disconnect the switch S2, grounding switch K2 of No. 2 routes, disconnect switch S3, No. 1 earthing of mother route
Lock K3 and No. 2 grounding switch K4, getting out experiment power supply that voltage class is 1.05kV and current precision is 0.1mA's
Table is used in test；
B1, experiment power supply is accessed at No. 1 grounding switch K3 of mother route, it is with cable that No. 1 phase modifier both ends are short
It connects；
C1, the switch S3 of mother route for closing phase modifier system, Line 1 road switch S1, and open experiment power supply；
D1, No. 1 bus differential protecting, No. 1 short leg differential protection, No. 1 differential guarantor of main transformer are measured with test table
The operating parameter of the Current Transformer Secondary side electric current at shield and No. 1 phase modifier differential protection both ends；
E1, each Current Transformer Secondary side current parameters for measuring of judgement and actually calculated theoretical value whether phase
Closely, if it is close, terminate the test adjustment work on Line 1 road, if measurement result differs larger (scene examination with results of calculation
It is generally acknowledged that then current transformer may be deposited when the relative error of the measured value of electric current and calculated value is greater than 15% when testing in testing
The no-load voltage ratio inaccuracy, wiring error, opposite polarity the problems such as), then close experiment power supply, the switch S3 for disconnecting mother route, No. 1
The switch S1 of route, searches and eliminates abnormal problem, carries out C1, D1 and E1 step work again, until measure
Parameter is close with calculated result, then terminates the test adjustment work on Line 1 road；
The test adjustment of (2) No. 2 routes includes to No. 2 bus differential protectings, No. 2 short leg differential protections, No. 2 main transformer pressures
The test adjustment of device differential protection and No. 2 phase modifier differential protections, experiment process are as described below:
A2, it carries out the preparation before phase modifier system through-flow test: disconnecting the switch on the Line 1 road of phase modifier system
S1, grounding switch K1 disconnect the switch S2, grounding switch K2 of No. 2 routes, disconnect switch S3, No. 1 earthing of mother route
Lock K3 and No. 2 grounding switch K4, getting out experiment power supply that voltage class is 1.05kV and current precision is 0.1mA's
Table is used in test；
B2, experiment power supply is accessed at No. 2 grounding switch K4 of mother route, it is with cable that No. 2 phase modifier both ends are short
It connects；
C2, the switch S3 of mother route for closing phase modifier system, No. 2 routes switch S2, and open experiment power supply；
D2, No. 2 bus differential protectings, No. 2 short leg differential protections, No. 2 differential guarantors of main transformer are measured with test table
The operating parameter of the Current Transformer Secondary side electric current at shield and No. 2 phase modifier differential protection both ends；
E2, each Current Transformer Secondary side current parameters for measuring of judgement and actually calculated theoretical value whether phase
Closely, if it is close, terminate the test adjustment work of No. 2 routes, if measurement result differs larger (scene examination with results of calculation
It is generally acknowledged that then current transformer may be deposited when the relative error of the measured value of electric current and calculated value is greater than 15% when testing in testing
The no-load voltage ratio inaccuracy, wiring error, opposite polarity the problems such as), then close experiment power supply, the switch S3 for disconnecting mother route, No. 2
The switch S2 of route, searches and eliminates abnormal problem, carries out C2, D2 and E2 step work again, until measure
Parameter is close with calculated result, then terminates the test adjustment work of No. 2 routes.
Compared with prior art, the beneficial effects of the present invention are:
One, the present invention passes through the access point and the mode of connection of design experiment power supply, only may make examination by once through-flow
Bus, short leg, main transformer and each equipment of phase modifier that galvanoscope passes through phase modifier system 1 route or No. 2 routes
Current transformer used in differential protection, can accomplish only by it is primary it is through-flow realize to bus, short leg, main transformer and
The test adjustment of each equipment differential protection institute Current Transformer of phase modifier can significantly reduce test work load, save test
Cost.
Two, the present invention wants test according to the big impedance operator and Practical Project of 750kV converter station phase modifier system
It asks, selects the test table that voltage class is 0.1mA for the experiment power supply of 1.05kV, current precision, it is ensured that test when test
Electric current is surveyed, be can be used.
Detailed description of the invention
Fig. 1 is experiment process figure of the invention；
Fig. 2 is the wiring schematic diagram of 750kV converter station phase modifier system；
Fig. 3 be it is through-flow after current loop schematic diagram.
Specific embodiment
A kind of through-flow test method of 750kV converter station phase modifier system, the phase modifier system suitable for 750kV converter station
Bus differential protecting, short leg differential protection, main transformer differential protection, phase modifier differential protection institute Current Transformer
Test adjustment, the test adjustment of test adjustment and No. 2 routes including Line 1 road:
(1) test adjustment on Line 1 road includes to No. 1 bus differential protecting, No. 1 short leg differential protection, No. 1 main transformer pressure
The test adjustment of device differential protection and No. 1 phase modifier differential protection institute Current Transformer, experiment process are as described below:
A1, it carries out the preparation before phase modifier system through-flow test: disconnecting the switch on the Line 1 road of phase modifier system
S1, grounding switch K1 disconnect the switch S2, grounding switch K2 of No. 2 routes, disconnect switch S3, No. 1 earthing of mother route
Lock K3 and No. 2 grounding switch K4, getting out experiment power supply that voltage class is 1.05kV and current precision is 0.1mA's
Table is used in test；
B1, experiment power supply is accessed at No. 1 grounding switch K3 of mother route, it is with cable that No. 1 phase modifier both ends are short
It connects；
C1, the switch S3 of mother route for closing phase modifier system, Line 1 road switch S1, and open experiment power supply；
D1, No. 1 bus differential protecting, No. 1 short leg differential protection, No. 1 differential guarantor of main transformer are measured with test table
The operating parameter of the Current Transformer Secondary side electric current at shield and No. 1 phase modifier differential protection both ends；
E1, each Current Transformer Secondary side current parameters for measuring of judgement and actually calculated theoretical value whether phase
Closely, if it is close, terminate the test adjustment work on Line 1 road, if measurement result differs larger (scene examination with results of calculation
It is generally acknowledged that then current transformer may be deposited when the relative error of the measured value of electric current and calculated value is greater than 15% when testing in testing
The no-load voltage ratio inaccuracy, wiring error, opposite polarity the problems such as), then close experiment power supply, the switch S3 for disconnecting mother route, No. 1
The switch S1 of route, searches and eliminates abnormal problem, carries out C1, D1 and E1 step work again, until measure
Parameter is close with calculated result, then terminates the test adjustment work on Line 1 road；
The test adjustment of (2) No. 2 routes includes to No. 2 bus differential protectings, No. 2 short leg differential protections, No. 2 main transformer pressures
The test adjustment of device differential protection and No. 2 phase modifier differential protections, experiment process are as described below:
A2, it carries out the preparation before phase modifier system through-flow test: disconnecting the switch on the Line 1 road of phase modifier system
S1, grounding switch K1 disconnect the switch S2, grounding switch K2 of No. 2 routes, disconnect switch S3, No. 1 earthing of mother route
Lock K3 and No. 2 grounding switch K4, getting out experiment power supply that voltage class is 1.05kV and current precision is 0.1mA's
Table is used in test；
B2, experiment power supply is accessed at No. 2 grounding switch K4 of mother route, it is with cable that No. 2 phase modifier both ends are short
It connects；
C2, the switch S3 of mother route for closing phase modifier system, No. 2 routes switch S2, and open experiment power supply；
D2, No. 2 bus differential protectings, No. 2 short leg differential protections, No. 2 differential guarantors of main transformer are measured with test table
The operating parameter of the Current Transformer Secondary side electric current at shield and No. 2 phase modifier differential protection both ends；
E2, each Current Transformer Secondary side current parameters for measuring of judgement and actually calculated theoretical value whether phase
Closely, if it is close, terminate the test adjustment work of No. 2 routes, if measurement result differs larger (scene examination with results of calculation
It is generally acknowledged that then current transformer may be deposited when the relative error of the measured value of electric current and calculated value is greater than 15% when testing in testing
The no-load voltage ratio inaccuracy, wiring error, opposite polarity the problems such as), then close experiment power supply, the switch S3 for disconnecting mother route, No. 2
The switch S2 of route, searches and eliminates abnormal problem, carries out C2, D2 and E2 step work again, until measure
Parameter is close with calculated result, then terminates the test adjustment work of No. 2 routes.
As shown in Figures 2 and 3, the Line 1 road of phase modifier system includes the 1 of No. 1 bus, S1 containing switch and grounding switch K1
Number short leg, No. 1 main transformer and No. 1 each electrical equipment of phase modifier；No. 2 routes include No. 2 buses, S2 containing switch and ground connection
No. 2 short legs, No. 2 main transformers and No. 2 each electrical equipments of phase modifier of disconnecting link K2.Mother route can when switch S3 is closed
It is formed and is electrically connected with No. 1 bus and No. 2 buses, be installed with No. 1 grounding switch of mother route respectively in the two sides switch S3
K3 and No. 2 grounding switch K4.In practical projects, apparatus as discussed above is configured with differential protection, so phase modifier system
Differential protection include that short leg differential protection, bus differential protecting, main transformer differential protection and the protection of phase modifier difference are dynamic,
Each differential protection has installed current transformer at its claimed equipment both ends, if the no-load voltage ratio of both ends current transformer, pole
Property, wiring etc. go wrong, may result in false protection or tripping, it is therefore desirable to carry out through-flow test and debug each differential guarantor
The current transformer of shield.
Before carrying out through-flow test, suitable experiment power supply and test table should be selected, therefore needs to establish Current Mutual Inductance
The computation model of device secondary side current.Therefore, through-flow test design can be divided into two parts, first is that Selection experiment plant-grid connection point and
The mode of connection is to determine current loop, second is that the requirement selection by CT secondary side current calculated result, Practical Project to test
The voltage class of experiment power supply and the test precision of table, due to the model and specification on Line 1 road and all devices of No. 2 routes
It is consistent, therefore be introduced by taking Line 1 road as an example below.
(1) through-flow test current loop designs
For the workload and cost for reducing test, optimal situation is to generate when experiment power supply is to system power supply
Electric current can pass through include bus, short leg, main transformer and phase modifier all electrical equipments.It therefore can be in the mother of Fig. 2
Experiment power supply is accessed at No. 1 grounding switch K3 on line road, then electric current flows through No. 1 bus, No. 1 short by mother route from K3
Lead, No. 1 main transformer and No. 1 phase modifier, since bus and short leg impedance are mutually compared to the impedance of 750kV main transformer
For it is minimum, can be neglected, therefore the electric current of system such as following formula:
In formula: XBFor main Transformer Short Circuit Impedance, XTFor phase modifier impedance, U is the voltage rating of experiment power supply, due to
In rotation, impedance is difficult to determine phase modifier, so for convenience of the theoretical value of test current is obtained by calculation before testing, into
It can be using cable by No. 1 phase modifier shorted on both ends, so that test current does not pass through No. 1 phase modulation machine rotor and determines when row through-flow test
Current transformer that is sub and passing through No. 1 phase modifier both ends, at this point, current loop is as shown in Figure 3.
(2) experiment power supply and accuracy of instrument select
After current loop determines, the on high-tension side test current of main transformer after experiment power supply is through-flow can be calculated
Ik, calculate such as following formula:
In formula: IBFor main high voltage side of transformer rated current, UB% is main transformer short-circuit voltage percentage.
Therefore CT secondary side current is
In formula: K is the no-load voltage ratio of CT.
The U of the main transformer of 750kV converter station phase modifier systemB% is generally for 0.1 or so, UBFor 750kV, IBGenerally
About 270A, the voltage rating of experiment power supply generally has 0.4kV, 1.05kV, the electric current of each equipment differential protection in Practical Project
The no-load voltage ratio K of mutual inductor difference, generally 2500/1 or 1/1000, when K=2500/1 being taken to be calculated, current transformer
Secondary current will be smaller, then can select the higher test table of current precision by calculated result.Therefore, by U=0.4kV and
U=1.05kV substitutes into formulaCalculated IkAbout 1.44A and 3.78A, then pass through formulaIt calculates
Current transformer secondary side current InIt respectively may be about 0.6mA and 1.5mA.
When substation and converter station carry out through-flow test, national grid relevant departments require to generate in high voltage side of transformer
Electric current should be greater than 2A, therefore, the present invention select voltage class be 1.05kV experiment power supply as 750kV converter station phase modifier
The through-flow test power supply of system.The current precision of the table of test used in on-the-spot test is generally 0.1mA, 1mA or 1mA or more,
By above-mentioned calculating it is found that experiment power supply voltage class be 1.05kV, current transformer to become K be 2500/1 when, electric current
The calculating current of mutual inductor secondary side is about 1.5mA, therefore to reduce measurement error, it is 0.1mA that the present invention, which selects current precision,
Test table.
Jiuquan converter station phase modifier system for the accuracy and feasibility of the mentioned method of the verifying present invention, in Gansu Province
Through-flow test is done in Line 1 road.The U of the main transformer of Jiuquan converter station phase modifier systemB% is 0.1018, UBFor 750kV, IB
For 268.2A, so passing through formula when the use of voltage class being 1.05kV experiment power supplyIt is calculated
The electric current of current transformer primary side is about 3.6A, and differential protection institute's Current Transformer of each equipment of Jiuquan converter station becomes
2500/1 and 1000/1, so passing through formulaThe secondary side current of calculated current transformer be respectively 1.4mA with
3.6mA.Table 1 give No. 1 short leg differential protection that through-flow test measures, No. 1 main transformer differential protection close to No. 1 master
The current measurement data of the Current Transformer Secondary side of high voltage side of transformer, wherein No. 9 of No. 1 short leg differential protection,
The no-load voltage ratio of No. 10 current transformers is 2500/1, the electricity for No. 9, No. 10 Current Transformer Secondary side that test is measured with table
Stream is respectively 1.4mA, 1.5mA, is closer to calculated 1.4mA, relative error is about 7%；No. 1 differential guarantor of main transformer
The o.11 of shield, No. 12 current transformer no-load voltage ratio be 1000/1, o.11 that test is measured with table, No. 12 measure
Electric current is 3.6mA, consistent with calculated 3.6mA.Therefore, the mentioned method of present invention accuracy with higher and feasible
Property, there is preferable future in engineering applications.
The part measurement data of 1 Jiuquan converter station phase modifier system through-flow test of table
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
It is all within the contents of the present invention and principle, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (1)
1. a kind of through-flow test method of 750kV converter station phase modifier system, it is characterised in that: including the debugging to 2 routes,
The Line 1 road of phase modifier system include No. 1 bus, No. 1 short leg of S1 containing switch and grounding switch K1, No. 1 main transformer with
And No. 1 each electrical equipment of phase modifier；No. 2 routes include No. 2 short legs of No. 2 buses, S2 containing switch and grounding switch K2, No. 2
Main transformer and No. 2 each electrical equipments of phase modifier；Mother route can be with No. 1 bus and No. 2 bus shapes when switch S3 is closed
At electrical connection, it is installed with No. 1 grounding switch K3 and No. 2 grounding switch K4 of mother route respectively in the two sides switch S3；
Apparatus as discussed above is configured with differential protection, through-flow test method specific steps are as follows:
S1, Line 1 road test adjustment include poor to No. 1 bus differential protecting, No. 1 short leg differential protection, No. 1 main transformer
The test adjustment of dynamic protection and No. 1 phase modifier differential protection institute Current Transformer, experiment process are as described below:
A1, it carries out the preparation before phase modifier system through-flow test: disconnecting the switch S1 on the Line 1 road of phase modifier system, connects
Ground disconnecting link K1 disconnects the switch S2, grounding switch K2 of No. 2 routes, disconnects switch S3, No. 1 grounding switch K3 of mother route
And No. 2 grounding switch K4, get out the experiment power supply that voltage class is 1.05kV and the test that current precision is 0.1mA
Use table；
B1, by No. 1 grounding switch K3 of experiment power supply access mother route, with cable by No. 1 phase modifier shorted on both ends；
C1, the switch S3 of mother route for closing phase modifier system, Line 1 road switch S1, and open experiment power supply；
D1, with test table measure No. 1 bus differential protecting, No. 1 short leg differential protection, No. 1 main transformer differential protection with
And the operating parameter of the Current Transformer Secondary side electric current at No. 1 phase modifier differential protection both ends；
Whether each Current Transformer Secondary side current parameters that E1, judgement are measured and practical calculated theoretical value are close, if
It is close, then terminate the test adjustment work on Line 1 road, when measurement result and results of calculation relative error are greater than 15% if
The switch S1 for closing experiment power supply, disconnecting the switch S3 of mother route, Line 1 road, searches and eliminates abnormal problem, carry out again
C1, D1 and E1 walk work, until the parameter measured is close with calculated result, then terminate the test tune on Line 1 road
Trial work is made；
S2, No. 2 routes test adjustment include poor to No. 2 bus differential protectings, No. 2 short leg differential protections, No. 2 main transformers
The test adjustment of dynamic protection and No. 2 phase modifier differential protections, experiment process are as described below:
A2, it carries out the preparation before phase modifier system through-flow test: disconnecting the switch S1 on the Line 1 road of phase modifier system, connects
Ground disconnecting link K1 disconnects the switch S2, grounding switch K2 of No. 2 routes, disconnects switch S3, No. 1 grounding switch K3 of mother route
And No. 2 grounding switch K4, get out the experiment power supply that voltage class is 1.05kV and the test that current precision is 0.1mA
Use table；
B2, by No. 2 grounding switch K4 of experiment power supply access mother route, with cable by No. 2 phase modifier shorted on both ends；
C2, the switch S3 of mother route for closing phase modifier system, No. 2 routes switch S2, and open experiment power supply；
D2, with test table measure No. 2 bus differential protectings, No. 2 short leg differential protections, No. 2 main transformer differential protections with
And the operating parameter of the Current Transformer Secondary side electric current at No. 2 phase modifier differential protection both ends；
Whether each Current Transformer Secondary side current parameters that E2, judgement are measured and practical calculated theoretical value are close, if
It is close, then terminate the test adjustment work of No. 2 routes, if measurement result differs relative error with results of calculation greater than 15%
When then close the switch S2 of experiment power supply, the switch S3 for disconnecting mother route, No. 2 routes, search and eliminate abnormal problem, again
Carrying out C2, D2 and E2 step work then terminates the examination of No. 2 routes until the parameter measured is close with calculated result
Test debugging efforts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347887.6A CN109856584B (en) | 2018-11-13 | 2018-11-13 | Through-current test method of 750kV converter station camera system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811347887.6A CN109856584B (en) | 2018-11-13 | 2018-11-13 | Through-current test method of 750kV converter station camera system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109856584A true CN109856584A (en) | 2019-06-07 |
| CN109856584B CN109856584B (en) | 2024-02-06 |
Family
ID=66889980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811347887.6A Active CN109856584B (en) | 2018-11-13 | 2018-11-13 | Through-current test method of 750kV converter station camera system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109856584B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004170093A (en) * | 2002-11-18 | 2004-06-17 | Toshiba Corp | Testing device and testing method for electric equipment protection circuit |
| CN102095950A (en) * | 2010-11-10 | 2011-06-15 | 中冶建工有限公司 | Overall test and construction method of differential protection system of large-scale transformer |
| CN102261723A (en) * | 2011-07-22 | 2011-11-30 | 高淑凤 | Energy-saving intelligent air conditioner control device and method |
| CN102427243A (en) * | 2011-10-28 | 2012-04-25 | 华中科技大学 | Multi-terminal DC (Direct Current) power transmission system for combined synchronization of wind power plant and conventional power plant |
| CN104330760A (en) * | 2014-11-10 | 2015-02-04 | 国家电网公司 | Precise high-voltage current mutual inductor and error testing system and method thereof |
| CN106168658A (en) * | 2016-08-31 | 2016-11-30 | 宋天斌 | A kind of device and method reducing voltage transformer secondary voltage drop |
| CN106451771A (en) * | 2016-10-09 | 2017-02-22 | 国网上海市电力公司 | Control and protection system of high-voltage DC transmission system |
| CN106569075A (en) * | 2015-10-10 | 2017-04-19 | 宝山钢铁股份有限公司 | Main transformer and high voltage side cable zero-sequence differential protection polarity test circuit and method |
| CN106771841A (en) * | 2017-03-30 | 2017-05-31 | 西安西热节能技术有限公司 | A kind of through-flow system of transformer station S types and method |
| CN107104437A (en) * | 2017-05-04 | 2017-08-29 | 国电南瑞科技股份有限公司 | The reactive coordination control method of DC converter station alternating current filter and phase modifier |
| CN107742888A (en) * | 2017-09-29 | 2018-02-27 | 国电南瑞科技股份有限公司 | It is a kind of to consider short circuit current and the receiving end power network phase modifier dispatching method of system frequency voltage risk |
-
2018
- 2018-11-13 CN CN201811347887.6A patent/CN109856584B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004170093A (en) * | 2002-11-18 | 2004-06-17 | Toshiba Corp | Testing device and testing method for electric equipment protection circuit |
| CN102095950A (en) * | 2010-11-10 | 2011-06-15 | 中冶建工有限公司 | Overall test and construction method of differential protection system of large-scale transformer |
| CN102261723A (en) * | 2011-07-22 | 2011-11-30 | 高淑凤 | Energy-saving intelligent air conditioner control device and method |
| CN102427243A (en) * | 2011-10-28 | 2012-04-25 | 华中科技大学 | Multi-terminal DC (Direct Current) power transmission system for combined synchronization of wind power plant and conventional power plant |
| CN104330760A (en) * | 2014-11-10 | 2015-02-04 | 国家电网公司 | Precise high-voltage current mutual inductor and error testing system and method thereof |
| CN106569075A (en) * | 2015-10-10 | 2017-04-19 | 宝山钢铁股份有限公司 | Main transformer and high voltage side cable zero-sequence differential protection polarity test circuit and method |
| CN106168658A (en) * | 2016-08-31 | 2016-11-30 | 宋天斌 | A kind of device and method reducing voltage transformer secondary voltage drop |
| CN106451771A (en) * | 2016-10-09 | 2017-02-22 | 国网上海市电力公司 | Control and protection system of high-voltage DC transmission system |
| CN106771841A (en) * | 2017-03-30 | 2017-05-31 | 西安西热节能技术有限公司 | A kind of through-flow system of transformer station S types and method |
| CN107104437A (en) * | 2017-05-04 | 2017-08-29 | 国电南瑞科技股份有限公司 | The reactive coordination control method of DC converter station alternating current filter and phase modifier |
| CN107742888A (en) * | 2017-09-29 | 2018-02-27 | 国电南瑞科技股份有限公司 | It is a kind of to consider short circuit current and the receiving end power network phase modifier dispatching method of system frequency voltage risk |
Non-Patent Citations (1)
| Title |
|---|
| 郭亮;潘本仁;王冠南;杨越;: "洪屏抽水蓄能电站500kV系统一次通流方案设计", 江西电力, no. 06 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109856584B (en) | 2024-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109031000B (en) | A kind of method and system based on non-faulting disturbance In situ Measurement grid short circuit capacity | |
| Guide | Network protection & automation guide | |
| CN102305893B (en) | Method and device for checking power-factor angle of high voltage line of intelligent substation on site | |
| CN107340455A (en) | A kind of power distribution network high-tension line single-phase wire break fault recognition method and application | |
| CN106569075B (en) | Main transformer and high-pressure side cable zero sequence differential protection polarity hookup and method | |
| CN102510010A (en) | Method for checking and testing relay protection vector before operation of newly-built transformer station | |
| CN111460750A (en) | Automatic generating system and method for protection setting values of generator and transformer | |
| CN110542822A (en) | method for measuring short-circuit current and short-circuit impedance of power grid based on reactive power disturbance | |
| CN202305782U (en) | Intelligent transformer station high voltage line power factor angle on-site verification apparatus | |
| CN106324397A (en) | Ultrahigh-voltage direct-current transmission project converter transformer alternating-current loop system on-site inspection method | |
| CN107831378B (en) | Device and method for detecting compensation effect of arc suppression coil | |
| CN205210220U (en) | Measure device of direct current circuit to ground leakage current | |
| Liu et al. | Identification method for single-line-to-ground faults with line break based on phasor measurement in distribution networks | |
| CN105403808B (en) | A kind of localization method and device of DC line earth fault | |
| CN102004191A (en) | Method for calculating line capacitance in arc suppression coil parallel running system | |
| CN109375047B (en) | System and method for testing double-end asynchronous polarity of high-voltage transmission line | |
| WO2020191825A1 (en) | Phase-relationship-based method for single-phase disconnection fault identification in power distribution network | |
| CN109856584A (en) | A kind of through-flow test method of 750kV converter station phase modifier system | |
| CN103941146B (en) | A kind of apparatus and method detecting and distinguish each Secondary Winding accuracy rating of 10kV current transformer that do not have a power failure | |
| Guo et al. | A method of 20 kV cable line fault location based on sheath grounding current | |
| CN110967597A (en) | Method for detecting capacitance current to ground | |
| CN104898006B (en) | A kind of anticipation device of Current Transformer Secondary side open circuit | |
| Liu et al. | An on-line monitoring method for winding deformation of power transformers | |
| CN212134830U (en) | Relay protection and automatic calibration system with analog load | |
| CN110687403B (en) | Power distribution network single-phase earth fault detection method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |