CN109709477A - The test macro of protective relaying device under a kind of mixed connection mode - Google Patents
The test macro of protective relaying device under a kind of mixed connection mode Download PDFInfo
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- CN109709477A CN109709477A CN201811518369.6A CN201811518369A CN109709477A CN 109709477 A CN109709477 A CN 109709477A CN 201811518369 A CN201811518369 A CN 201811518369A CN 109709477 A CN109709477 A CN 109709477A
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- relay
- protection tester
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Abstract
The present invention provides a kind of test macros of protective relaying device under mixed connection mode, for the protective relaying device under mixed connection mode, the ordinary tap amount signal of first relay-protection tester output subject relay equipment, the digital signal of second relay-protection tester output subject relay equipment, then to ordinary tap amount or analog signals, digital signal synchronizes, it ensure that the synchronization of the first relay-protection tester and the second relay-protection tester output signal, keep the function of being tested relay equipment or the performance test results more accurate and reliable, avoid the randomness and uncertainty of test result.
Description
Technical field
The invention belongs to power system transformer substation technical field of automatic control, in particular to relay under a kind of mixed connection mode
The test macro of protective device.
Background technique
With going from strength to strength for China's power grid scale, current China's power grid has entered across great Qu, extra-high voltage, alternating current-direct current mixed connection
New stage of operation, and be tested the sample mode of relay equipment, also because of the extensive application of electronic current mutual inductor, and occur compared with
Big variation.Electronic current mutual inductor and the widely applied conventional electromagnetic formula electric current of electric system before, capacitor voltage mutual inductance
Device is compared, have the characteristics that it is compact-sized, small in size, be not afraid of electromagnetic interference, unsaturation and be easy to digital data transmission.It avoids
The disadvantage that the insulation system of existing equipment mutual inductor is complicated, volume increases, cost is higher, so high energy digital mutual inductor is in work
The field of Cheng Yingyong is extremely wide.It is widely used to the construction of GIS, IIGIS and ultra-high voltage transformer station at present.At the same time,
Conventional electromagnetic formula electric current, capacitance type potential transformer, since its sampling is intuitive, reliably, the less advantage of wiring, in engineering still
It is widely applying.
In this situation, there have been this relay equipments: sample mode include conventional CT/PT electrical quantity sampling and
The digital sample of optical-fibre channel, CT/PT that both modes sample while appearing in the same station or even same being set by protection
In standby.Two kinds of sample modes appear in a relay equipment, as the relay equipment of sampling mixed connection multiplexing.
These sampling mixed connections multiplexing relay equipment, itself have different structure sample mode and different output
Mode.There is following situation in the realization of its defencive function: both can all be sampled, and can also all passed through by routine CT/PT
Digital SV sampling；Or part is sampled by routine CT/PT, is partially sampled using number SV.And relay equipment is to field condition
Understanding, analysis and judgement, movement output, be all to be transmitted by these sampling channels.Only there are these samplings etc.
Information just can be carried out comprehensive logic analysis, make suitable processing judgement, and then provide reasonable processing scheme.To right
The equipment at scene is protected accordingly.Such as: when exception or failure occurs in protected device, pass through the sampling received
Value carries out corresponding logic judgment to the situation at scene, when being abnormal with failure, exports corresponding breaker tripping and closing outlet, comes
Drive the breaking-closing operating of live breaker.It, can when normal out-of-balance current, load fluctuation, external area error
Correct analytical judgment, not mistrip are made, not wrong diagnosis electricity does not cause to perplex to the normal operation and maintenance in electric system power station,
Unnecessary trouble is not caused to power consumer.It takes urgent measure when necessary, handles emergent accident and abnormal conditions, to guarantee
The safe, reliable and effective supply of electric power.
For using CT/PT mixed connection sampling relay equipment test device, sample mode include routine CT/PT sample with
Optical-fibre channel digital sample and the relay equipment of the two mixed connection multiplexing, it is more next now with the extensive use of intelligent station product
More relay equipments is sampled using electronic mutual inductor and routine CT/PT mutual inductor, relative to directly adopt tradition after
Tester, or directly intelligent relay protection tester are protected, both can not achieve the same of electronic mutual inductor and routine CT/PT mutual inductor
Therefore step output in this case, cannot correctly judge the protective value and function of CT/PT mixed connection sampling relay equipment,
The protective value of CT/PT mixed connection sampling relay equipment and the accuracy and reliability of functional test results will reduce.
Summary of the invention
The purpose of the present invention is to provide a kind of test macros of protective relaying device under mixed connection mode, for solving mixed connection
The conventional relay protection tester performance for causing relay equipment asynchronous with the output signal of intelligent relay protection tester and function under mode
The problem of energy test result inaccuracy.
To achieve the above object, the present invention provides a kind of test macros of protective relaying device under mixed connection mode, including
Synchronization module, the first control module, the second control module, the first relay protection tester and the second relay protection tester, the first relay protection are surveyed
Examination instrument have for connect subject relay equipment analog quantity Sampling Interface analog quantity coffret and for connect be tested after
Protection device On-off signal/output interface switching value coffret, the second relay protection tester have for connecting subject relay protection
The communication interface of device SV/GOOSE interface, synchronization module connect the first control module and the second control module, the first control mould
Block and the first relay protection tester communication connection, the second control module and the second relay protection tester communication connection, it is synchronous in test
Module exports synchronization signal to the first control module and the second control module, and the first control module and the second control module are right respectively
Corresponding test signal is exported when should control the first relay protection tester and tester simultaneous the second relay protection, with to subject relay equipment into
Row test.
For the protective relaying device under mixed connection mode, the routine of the first relay-protection tester output subject relay equipment
Switching value or analog signals, the digital signal of the second relay-protection tester output subject relay equipment, are then opened conventional
Pass amount signal, digital signal synchronize, and ensure that the first relay-protection tester and the second relay-protection tester output letter
Number synchronization, keep the function of being tested relay equipment or the performance test results more accurate and reliable, avoid test result
Randomness and uncertainty.
It is further limited as to synchronization module, the synchronization module is using clock synchronization algorithm.
For ordinary tap amount signal needed for exporting subject relay equipment, the first relay protection tester is for passing through electricity
Cable is connect with subject relay equipment.
In order to export subject relay equipment needed for digital signal, the second relay protection tester be used for pass through optical fiber and quilt
Try relay equipment connection.
Detailed description of the invention
Fig. 1 is the structural block diagram of the test macro of protective relaying device under mixed connection mode of the invention；
Fig. 2 is the connection structure diagram of synchronization module and relay protection tester of the invention；
Fig. 3 is the connection structure diagram of relay protection tester and subject relay equipment of the invention；
Fig. 4 is capacitor cell composition schematic diagram of the invention.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing:
The embodiment of test macro:
The present invention provides a kind of test macros of protective relaying device under mixed connection mode, including synchronization module, the first control
Molding block, the second control module, the first relay protection tester and the second relay protection tester, the first relay protection tester have for connecting
Be tested relay equipment analog quantity Sampling Interface analog quantity coffret and for connect subject relay equipment On-off signal/
The switching value coffret of output interface, the second relay protection tester have for connecting subject relay equipment SV/GOOSE interface
Communication interface, synchronization module connect the first control module and the second control module, the first control module and the first relay protection tester
Communication connection, the second control module and the second relay protection tester communication connection, in test, synchronization module is to the first control module
Synchronization signal is exported with the second control module, the first control module and the second control module respectively correspond control the first relay protection test
Corresponding test signal is exported when instrument and tester simultaneous the second relay protection, to test subject relay equipment.
Specifically, as depicted in figs. 1 and 2, under mixed connection mode the test macro of protective relaying device include synchronization module,
First control module, the second control module, conventional relay protection tester, intelligent relay protection tester, wherein conventional relay protection tester is
The first above-mentioned relay protection tester, intelligent relay protection tester are the second above-mentioned relay protection tester.Conventional relay protection tester and intelligence
Energy relay protection tester is connect with subject relay equipment, and conventional relay protection tester is connect with the first control module, and intelligent relay protection is surveyed
Examination instrument is connect with the second control module, and synchronization module includes at least two synchronizing cable and interface, connect respectively the first control module with
Second control module, the first control module with the first too network interface connection routine relay protection tester, the second control module by being passed through
Second Ethernet interface connects intelligent relay protection tester.First control module completes the process control to conventional relay protection tester, the
Two control modules complete the process control to intelligent relay protection tester, conventional relay protection tester and intelligent relay protection tester completion pair
It is tested the input/output of relay equipment test electric parameter.
As shown in figure 3, conventional relay protection tester is tested the conventional CT/PT input port of relay equipment by cable connection,
The On-off signal connection subject relay equipment switching value outlet of conventional relay protection tester, conventional relay protection tester output switch parameter
For connecting the On-off signal for needing program-controlled subject relay equipment；The On-off signal had no need to change, can direct electricity consumption
The power supply that cable connection needs, and connect the power supply for being tested relay equipment.Intelligent relay protection tester uses agreement wavelength and light intensity
The optical fiber of degree and interface type connects the SV/GOOSE interface of subject relay equipment by optical fiber, in addition to using optical fiber, may be used also
To receive SV/GOOSE signal using other kinds of connection type, configured by the sample format to subject relay equipment, choosing
Reasonable sample mode is selected, and protection line configuration is carried out to the virtual terminator of subject relay equipment；Actual protection line with
The configuration needs of protection are consistent.
The output signal of conventional relay protection tester and intelligent relay protection tester is likely to be out of synchronization, when to subject relay equipment
When function or performance are tested, synchronization module to the first control module and the second control module output synchronization signal, with
Two kinds of output signals are synchronized, after synchronously completing, conventional relay protection tester and intelligent relay protection tester are defeated by synchronization signal
Subject relay equipment is given, out to judge the function or performance of subject relay equipment.
Certain relay equipments, such as capacitance unbalance protection function/performance of filter relay equipment are tested
When, the associated arguments of capacitor are sampled using conventional relay protection tester and intelligent relay protection tester, i.e., tail current is adopted
With routine sampling CT, air core coil, LPCT or FT3 sample mode is can be used in condenser current, then protecting to capacitor unbalance
The test of protective function/performance is needed using test macro of the invention.
Initially set up synchronization module and the first control module, the communication connection of the second control module and the first control mould
Communication connection between block and the second control module and conventional relay protection tester and intelligent relay protection tester；Conventional relay protection tester
With the connection of intelligent relay protection tester and subject relay equipment, a closed loop test system is constituted.By the synchronization mould of test device
Block is associated with the output of tester, to guarantee the synchronism exported between tester.
According to the test case of relay protective scheme and principle establishment protection, carried out according to the test case of conventional relay protection tester
The output of normal signal carries out the output of digital quantity signal according to the test case of intelligent relay protection tester.It is conventional by editor
The synchronism output use-case of relay protection tester and the second relay protection tester, and the different tests driven according to different test modules
The output characteristics of instrument receives the consistency etc. of signal resolution time, carries out to test case if output signal postpones consistency
Corresponding adjustment ensure that the synchronism for the output signal that subject relay equipment receives.
The present embodiment tests condenser current under LPCT sample mode, the capacitor connection such as Fig. 4 of H bridge structure
It is shown.Due to the manufacture deviation of capacitor, needs to balance initial unbalance electric current using the total current of filter, work out first
Test case, the tail current calibration value comprising routine sampling, the condenser current calibration value of LPCT sampling, not to capacitor
Balanced balanced current is calibrated, and the correction of electric current is carried out in filter charging for the first time or after replacing capacitor.
It is converted according to following capacitor C1 operating criterion formula, by changing the condenser current value applied, to simulate
Element fault causes capacitor snowslide to damage, the component breakdown or fuse failure in capacitor unit, the capacitance variations of the bridge arm,
So as to cause flowing through out-of-balance current in bridge；By detecting the size of out-of-balance current, indirect calculable capacitor unit damage
Number；When damage reach subject relay equipment setting alarming value or trip value it is as shown in table 1, the protection issue alarm signal or
Tripping.By changing electric current, applies the current value of reliable alarm/tripping, and the current value for reliably not alerting/tripping, verify quilt
The correctness for trying the relay equipment functional performance index, should meet action situation as shown in Table 2.
Capacitor C1 operating criterion formula:
Wherein, ITA2 φ correctionFor phase current uneven after correction, ITA3φ is tail end phase current, KsetFor given threshold, InFor
Electric current given threshold.
The setting of 1 condenser current degree of unbalancedness definite value of table
2 capacitor unbalance degree definite value test result of table
Specific embodiment is presented above, but the present invention is not limited to embodiment described above.The present invention
Basic ideas be above-mentioned basic scheme, for those of ordinary skill in the art, introduction according to the present invention is designed each
The model of kind deformation, formula, parameter do not need to spend creative work.The case where not departing from the principle and spirit of the invention
Under to embodiment carry out variation, modification, replacement and deformation still fall in protection scope of the present invention.
Claims (4)
1. the test macro of protective relaying device under a kind of mixed connection mode, which is characterized in that including synchronization module, the first control mould
Block, the second control module, the first relay protection tester and the second relay protection tester, the first relay protection tester have for connecting subject
The analog quantity coffret of relay equipment analog quantity Sampling Interface and for connect subject relay equipment On-off signal/output
The switching value coffret of interface, the second relay protection tester have the communication for connecting subject relay equipment SV/GOOSE interface
Interface, synchronization module connect the first control module and the second control module, and the first control module and the first relay protection tester communicate
Connection, the second control module and the second relay protection tester communication connection, in test, synchronization module is to the first control module and the
Two control modules export synchronization signal, the first control module and the second control module respectively correspond the first relay protection tester of control and
Second relay protection exports corresponding test signal when tester simultaneous, to test subject relay equipment.
2. the test macro of protective relaying device under mixed connection mode according to claim 1, which is characterized in that the synchronization
Module uses clock synchronization algorithm.
3. according to right want 1 or 2 described under mixed connection mode protective relaying device test macro, which is characterized in that described
One relay protection tester is used to connect by cable with subject relay equipment.
4. according to right want 1 or 2 described under mixed connection mode protective relaying device test macro, which is characterized in that described
Two relay protection testers are used to connect by optical fiber with subject relay equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811518369.6A CN109709477A (en) | 2018-12-12 | 2018-12-12 | The test macro of protective relaying device under a kind of mixed connection mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811518369.6A CN109709477A (en) | 2018-12-12 | 2018-12-12 | The test macro of protective relaying device under a kind of mixed connection mode |
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| CN109709477A true CN109709477A (en) | 2019-05-03 |
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| CN201811518369.6A Pending CN109709477A (en) | 2018-12-12 | 2018-12-12 | The test macro of protective relaying device under a kind of mixed connection mode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640611A (en) * | 2021-09-18 | 2021-11-12 | 威胜电气有限公司 | Production automation test system |
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| CN102129001A (en) * | 2011-01-07 | 2011-07-20 | 山东大学 | Digital relay protection device testing system and method |
| CN102721882A (en) * | 2012-06-18 | 2012-10-10 | 辽宁省电力有限公司营口供电公司 | Intelligent and conventional transformer substation optical fiber longitudinal difference protection channel joint debugging test method |
| CN202948080U (en) * | 2012-09-06 | 2013-05-22 | 湖南省湘电试研技术有限公司 | Relay protection test signal conversion apparatus of intelligent transformer station |
| CN204789801U (en) * | 2015-07-01 | 2015-11-18 | 贵州电网有限责任公司电力调度控制中心 | Computer type relay protection synthesizes testing arrangement |
| CN206400021U (en) * | 2016-12-22 | 2017-08-11 | 湖北荣创科技有限公司 | A kind of traditional transformer station and intelligent substation relay-protection tester |
| CN207965069U (en) * | 2018-01-05 | 2018-10-12 | 河北丰宁抽水蓄能有限公司 | A kind of power relay protection device |
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2018
- 2018-12-12 CN CN201811518369.6A patent/CN109709477A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129001A (en) * | 2011-01-07 | 2011-07-20 | 山东大学 | Digital relay protection device testing system and method |
| CN102721882A (en) * | 2012-06-18 | 2012-10-10 | 辽宁省电力有限公司营口供电公司 | Intelligent and conventional transformer substation optical fiber longitudinal difference protection channel joint debugging test method |
| CN202948080U (en) * | 2012-09-06 | 2013-05-22 | 湖南省湘电试研技术有限公司 | Relay protection test signal conversion apparatus of intelligent transformer station |
| CN204789801U (en) * | 2015-07-01 | 2015-11-18 | 贵州电网有限责任公司电力调度控制中心 | Computer type relay protection synthesizes testing arrangement |
| CN206400021U (en) * | 2016-12-22 | 2017-08-11 | 湖北荣创科技有限公司 | A kind of traditional transformer station and intelligent substation relay-protection tester |
| CN207965069U (en) * | 2018-01-05 | 2018-10-12 | 河北丰宁抽水蓄能有限公司 | A kind of power relay protection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113640611A (en) * | 2021-09-18 | 2021-11-12 | 威胜电气有限公司 | Production automation test system |
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Application publication date: 20190503 |
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