CN102495322B - Synchronous performance test method for digital relay protection device based on IEC61850 (International Electrotechnical Commission 61850) - Google Patents
Synchronous performance test method for digital relay protection device based on IEC61850 (International Electrotechnical Commission 61850) Download PDFInfo
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- CN102495322B CN102495322B CN201110435656.2A CN201110435656A CN102495322B CN 102495322 B CN102495322 B CN 102495322B CN 201110435656 A CN201110435656 A CN 201110435656A CN 102495322 B CN102495322 B CN 102495322B
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- 238000011056 performance test Methods 0.000 title abstract description 6
- 238000005070 sampling Methods 0.000 claims abstract description 39
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 230000001681 protective effect Effects 0.000 claims description 78
- 238000010998 test method Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 4
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- 230000001934 delay Effects 0.000 abstract 1
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3277—Testing of circuit interrupters, switches or circuit-breakers of low voltage devices, e.g. domestic or industrial devices, such as motor protections, relays, rotation switches
Abstract
The invention discloses a synchronous performance test method for a digital relay protection device based on IEC61850 (International Electrotechnical Commission 61850). The method comprises the following steps of: transmitting a voltage sampling value and a current sampling value to the digital relay protection device by a simulative combination unit through a digital relay protection tester; configuring different rated delays to each interval sampling value which is required for a synchronous test for the digital relay protection device under different delay conditions through changing a rated delay time in each interval sampling value channel, which is output by the digital relay protection tester; and checking whether each interval phase angle difference displayed by the digital relay protection device corresponds to the rated delay difference. If the each interval phase angle difference corresponds to the rated delay difference, the synchronous performance test of the digital relay protection device is correct; otherwise, the synchronous performance is incorrect. The synchronous performance test method for the digital relay protection device based on IEC61850 has the advantages that: the method makes up a blank that the synchronous performance test method for the digital relay protection device is not provided at present, and disposable devices such as a current booster, a pressure regulator and the like are not required, so that a large amount of manpower and material resources are saved, and the debugging time is saved.
Description
Technical field
The present invention relates to a kind of net synchronization capability method of testing, relate in particular to a kind of digital protective relay system net synchronization capability method of testing based on IEC61850.
Background technology
New equipment, the new technologies such as intelligent substation employing electronic mutual inductor have realized the electric parameters sampling in-situ digitalizations such as electric current, voltage; electrical secondary system adopts the IEC61850 standard; realized information transmission network; the information sharing standardization; protective relaying device is also turned to by from optical fiber, receiving digital quantity by traditional employing cable access voltage, current analog quantitative change; change has occurred in sample mode, also makes thus the debug-item of protective relaying device, adjustment method that variation has all occurred.The sampling value synchronization performance test is exactly one of the newly-increased and pilot project that must carry out of intelligent substation digital protector.
In transformer station; general protective device all needs to gather a plurality of electric weight; especially bus differential protection, tranformer protection etc. need to gather the electric weight of unit, a plurality of interval; not only require in same interval voltage/current sampled value data time synchronous; voltage/current sampled value between different interval also will guarantee time synchronized; guarantee protection action is correct, can malfunction or tripping.The traditional secondary protective device causes device by the electric weight of needs by secondary cable; completed the synchronized sampling of each electric weight by protective device; and each electric weight in intelligent substation has been digital quantity in output after the electronic mutual inductor conversion; digital quantity is delivered to each protective device by optical fiber; therefore; each sampled value that the intelligent substation digital protective relay system receives is not often synchronous data, need to sampling, carry out strict synchronous by protective device.
Research to the synchronization scenario of transformer station and synchronization principles is more; but the method to the test of protective device net synchronization capability does not still have document studied at present; along with carrying out on a large scale of intelligent substation construction, how the net synchronization capability of protective device is tested and become extremely important and unavoidable problem in debug process.
In Q/GDW 441-2010 " intelligent substation Protection Technology standard ", explicitly call for " protective device should not rely on outside to the time system realize its function "; also clear " Direct Sampling is answered in protection " in standard simultaneously; " the protective device sampled value adopts point-to-point access way; sample-synchronous should be realized by protective device "; according to above requirement; digital protection equipment generally adopts IEC 60044-8 based on FT3 or the point-to-point mode of IEC 61850-9-2; transmission delay is fixed, and sampling value synchronization adopts method of interpolation to complete by protective device.
Method of interpolation is a kind of reckoning formula method of synchronization.Protective device utilizes accurate due in, the message delay time of MU sample information to calculate the corresponding local sample constantly of MU, then by interpolation calculation, obtains the corresponding same local sample information constantly of different MU.Its prerequisite is definite time delay that known (or can be calculated) each MU sampling arrives protection; in Fig. 2; solid line means the accurate moment of MU sampling message; dotted line means to protect the moment of the actual MU of receiving sampling message; Δ t1, Δ t2 are respectively the fixed sample time delay of merge cells MU1, MU2; by this time delay, can extrapolate the local moment corresponding to the actual samples moment of MU, with solid line, mean.Can obtain the corresponding arbitrary local sampled data constantly of each MU by interpolation calculation, thereby realize sample-synchronous calculating.
Carry out at present the method for protective device synchronism detection:
At present still protective device is not carried out to net synchronization capability and test clear and definite method; normally when mutual inductor carries out accuracy testing; the specified time delay of each merge cells is adjusted into to identical value; guarantee that with this value at each interval that protective device receives is the value of synchronization; but this way is to test the net synchronization capability of protective device in fact; the sampled value of each merge cells only can assurance device received is synchronization; can not guarantee that, after the interpolation algorithm of protective device, the sampled value at each interval is still synchronous.Because mutual inductor or merge cells in station are not often same producer products, sometimes the specified time delay of each merge cells can not be adjusted into to identical value simultaneously, therefore also there is significant limitation.
Another method that protective device is carried out to the net synchronization capability checking is: the method that adds same power supply at the mutual inductor primary side.As differential each side current sampling data is carried out to the net synchronization capability test, each side current transformer is once being added to same electric current, check each side current sampling data at protective device, see that whether phase place is correct, judge that whether the protective device net synchronization capability is normal.Common this method integrated test stage that is adapted at dispatching from the factory carries out.But also there is very large drawback in this method: one, after primary equipment installs at the scene, each side mutual inductor is distant usually, and particularly each side of transformer, do not possess the condition that adds same electric current, and this way just can't be used; Two, can't, at primary side while making alive and electric current, therefore to the net synchronization capability between electric current, voltage, can not be tested; Three, this method of testing needs the primary equipments such as current lifting device, pressure regulator, during test, bothers very much, needs the time longer.
Summary of the invention
Purpose of the present invention is exactly in order to address the above problem; a kind of digital protective relay system net synchronization capability method of testing based on IEC61850 is provided, and it has a kind of new method to the test of digital protective relay system net synchronization capability, has simple; accurately, time saving advantage.
To achieve these goals, the present invention adopts following technical scheme:
A kind of digital protective relay system net synchronization capability method of testing based on IEC61850, utilize the digital protective relay tester, CID model file by importing digital formula protective relaying device, the channel definition that obtains the digital protective relay system sampled value row of channels configuration of going forward side by side, output meets the sampled data of digital protective relay system definition; Frame format simulation merge cells according to IEC61850-9-2, IEC60044-8 sends to digital protective relay system by the voltage and current sample value; By the specified delay time in each interval sampling value passage that changes the output of digital protective relay tester; in different time delay situations; need to carry out each interval sampling value of synchronism detection to digital protective relay system; carry out the difference configuration of specified time delay, check that whether each interval phase angle difference of digital protective relay system demonstration is corresponding with specified time delay phase angle difference.If corresponding, the test of digital protective relay system net synchronization capability is correct, otherwise the digital protective relay system net synchronization capability is incorrect.
Concrete test process is, sampled value to different interval is carried out the net synchronization capability test: the specified time delay of setting one interval sampling value is t1 μ s, the specified time delay of another interval sampling value is t2 μ s, the specified time delay of two interval sampling values is (t2-t1) μ s, each sampled value is the sine wave that frequency is 50Hz, therefore every millisecond of angle is 360 °/20ms=18 °, in the situation that specified time delay differs the s into (t2-t1) μ, two phase angle differences corresponding to interval sampling value are:
theoretical=(t2-t1) μ s*18 °/1000, check that the corresponding actual phase angle differences of two interval sampling values of digital protective relay system are:
reality, if
reality, the test of digital protective relay system net synchronization capability is correct, on the contrary the digital protective relay system net synchronization capability is incorrect.
Principle of work of the present invention
Utilize the digital protective relay tester; the simulation merge cells sends to digital protective relay system by the voltage and current sample value; by the specified delay time in each interval sampling value passage that changes the output of digital protective relay tester; the net synchronization capability of test digital protective relay system, i.e. phase angle difference corresponding to interval in different time delay situations
theoretical and actual phase angle difference
equate if actual, illustrate that the test of digital protective relay system net synchronization capability is correct, otherwise, asynchronous.
Beneficial effect of the present invention:
This method of testing can correctly complete the test of protection net synchronization capability; made up the blank that there is no at present digital protective relay system net synchronization capability method of testing; do not need the primary equipments such as current lifting device, pressure regulator, saved a large amount of human and material resources, saved debug time.
The accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is that the MU sampling is accurately compared schematic diagram with the actual moment that receives MU sampling message of digital protective relay system constantly.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
A kind of digital protective relay system net synchronization capability method of testing based on IEC61850, utilize the digital protective relay tester, CID model file by importing digital formula protective relaying device, the channel definition that obtains the digital protective relay system sampled value row of channels configuration of going forward side by side, output meets the sampled data of digital protective relay system definition; Frame format simulation merge cells according to IEC61850-9-2, IEC 60044-8 sends to digital protective relay system by the voltage and current sample value; By the specified delay time in each interval sampling value passage that changes the output of digital protective relay tester; in different time delay situations; need to carry out each interval sampling value of synchronism detection to digital protective relay system; carry out the difference configuration of specified time delay, check that whether each interval phase angle difference of digital protective relay system demonstration is corresponding with specified time delay phase angle difference.If corresponding, the test of digital protective relay system net synchronization capability is correct, otherwise the digital protective relay system net synchronization capability is incorrect.
The bus protection of take is described in detail as follows by example: bus protection need access the sampled value of spaced current sampling data and busbar voltage on this bus, the sampled value of these different interval is carried out to the net synchronization capability test as follows: the specified time delay of setting an interval sampling value is t1 μ s, the specified time delay of another interval sampling value is t2 μ s, the specified time delay of two interval sampling values is (t2-t1) μ s, each sampled value is the sine wave that frequency is 50Hz, therefore every millisecond of angle is 360 °/20ms=18 °, in the situation that specified time delay differs the s into (t2-t1) μ, two phase angle differences corresponding to interval are:
theoretical=(t2-t1) μ s*18 °/1000, check that the corresponding actual phase angle differences in two intervals of digital protective relay system are:
reality, if
reality, the test of digital protective relay system net synchronization capability is correct, on the contrary the digital protective relay system net synchronization capability is incorrect.
For example:
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (2)
1. the digital protective relay system net synchronization capability method of testing based on IEC61850, it is characterized in that, utilize the digital protective relay tester, CID model file by importing digital formula protective relaying device, the channel definition that obtains the digital protective relay system sampled value row of channels configuration of going forward side by side, output meets the sampled data of digital protective relay system definition; Frame format simulation merge cells according to IEC61850-9-2 or IEC60044-8 sends to digital protective relay system by the voltage and current sample value; By the specified delay time in each interval sampling value passage that changes the output of digital protective relay tester; in different time delay situations; need to carry out each interval sampling value of synchronism detection to digital protective relay system; carry out the difference configuration of specified time delay, check that whether each interval phase angle difference of digital protective relay system demonstration is corresponding with specified time delay phase angle difference; If corresponding, the test of digital protective relay system net synchronization capability is correct, otherwise the digital protective relay system net synchronization capability is incorrect; Described specified time delay phase angle difference is: the sampled value to different interval is carried out the net synchronization capability test: the specified time delay of setting one interval sampling value is t1 μ s, the specified time delay of another interval sampling value is t2 μ s, the specified time delay of two interval sampling values is (t2-t1) μ s, each sampled value is the sine wave that frequency is 50Hz, therefore every millisecond of angle is 360 °/20ms=18 °, in the situation that specified time delay is (t2-t1) μ s, two specified time delay phase angle differences corresponding to interval sampling value are: △ φ is theoretical=and (t2-t1) μ s*18 °/1000.
2. the digital protective relay system net synchronization capability method of testing based on IEC61850 as claimed in claim 1, it is characterized in that, each interval phase angle difference and the concrete test process of specified time delay phase angle difference that digital protective relay system shows are, in the situation that specified time delay is (t2-t1) μ s, two specified time delay phase angle differences corresponding to interval sampling value are: △ φ is theoretical=and (t2-t1) μ s*18 °/1000, check that the corresponding actual phase angle difference of two interval sampling values of digital protective relay system is: △ φ reality, if △ φ theory=△ φ reality, the test of digital protective relay system net synchronization capability is correct, otherwise, the digital protective relay system net synchronization capability is incorrect.
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| CN201110435656.2A CN102495322B (en) | 2011-12-22 | 2011-12-22 | Synchronous performance test method for digital relay protection device based on IEC61850 (International Electrotechnical Commission 61850) |
| PCT/CN2012/001503 WO2013091277A1 (en) | 2011-12-22 | 2012-11-08 | Iec61850-based synchronization performance test method for digital relay protection device |
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| CN201110435656.2A CN102495322B (en) | 2011-12-22 | 2011-12-22 | Synchronous performance test method for digital relay protection device based on IEC61850 (International Electrotechnical Commission 61850) |
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| CN102495322B (en) * | 2011-12-22 | 2014-01-08 | 山东电力研究院 | Synchronous performance test method for digital relay protection device based on IEC61850 (International Electrotechnical Commission 61850) |
| WO2014153764A1 (en) * | 2013-03-29 | 2014-10-02 | 国家电网公司 | Method and device for automatic test of relay protection function of intelligent substation |
| CN103344859B (en) * | 2013-06-29 | 2016-06-22 | 国家电网公司 | A kind of AC sampling loop test method |
| CN103983878B (en) * | 2014-06-05 | 2016-09-14 | 贵州电力试验研究院 | Relay protection net synchronization capability based on Random Discrete time domain test system and method |
| CN104202139A (en) * | 2014-09-18 | 2014-12-10 | 国家电网公司 | System, device and method for realizing synchronization of sampling value serial numbers |
| CN105978556A (en) * | 2016-06-20 | 2016-09-28 | 南京国电南自电网自动化有限公司 | Hybrid sampling synchronization method for onsite protection device |
| CN107340448B (en) * | 2016-11-22 | 2019-08-30 | 国家电网公司东北分部 | Utilize the method for control voltage and current phase measurement line protective devices vector |
| CN107765114A (en) * | 2017-09-14 | 2018-03-06 | 国网浙江省电力公司温州供电公司 | Test system and method for testing based on digital transformer protection device |
| CN108345243A (en) * | 2018-01-18 | 2018-07-31 | 国网浙江省电力有限公司电力科学研究院 | The digitized measurement tests FT3 to IEC61850-9-2 protocol conversion apparatus |
| CN110596485B (en) * | 2019-08-22 | 2022-11-04 | 国网安徽省电力有限公司 | Digital-analog integrated tester and digital-analog synchronous output method thereof |
| CN111049610B (en) * | 2019-12-12 | 2021-09-24 | 长园深瑞继保自动化有限公司 | Time synchronization management tester for testing relay protection device |
| CN111751776B (en) * | 2020-07-03 | 2022-10-21 | 国网四川省电力公司电力科学研究院 | Time verification system and method for digital relay protection tester |
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| US5544064A (en) * | 1994-05-20 | 1996-08-06 | Beckwith; Robert W. | Apparatus and method for sampling signals synchronous with analog to digital converter |
| JPH08251802A (en) * | 1995-03-08 | 1996-09-27 | Meidensha Corp | Sampling synchronization method of digital relay |
| JP5092874B2 (en) * | 2008-04-25 | 2012-12-05 | 株式会社明電舎 | Data synchronization control system of digital type protective relay. |
| CN101566641B (en) * | 2009-03-06 | 2011-01-26 | 深圳市双合电气股份有限公司 | Power system transmission line parameter synchronic measurement and recording device |
| CN101540500B (en) * | 2009-04-28 | 2010-11-10 | 南京中德保护控制系统有限公司 | Data synchronization method of digital optical fiber differential protective clock by relay method |
| CN101930064A (en) * | 2009-06-23 | 2010-12-29 | 华东电力试验研究院有限公司 | Delay measuring method of merging unit and system thereof |
| CN101692104A (en) * | 2009-09-28 | 2010-04-07 | 深圳市双合电脑系统股份有限公司 | Power quality and synchronized phasor monitoring device for power system |
| CN101893662B (en) * | 2010-07-23 | 2013-08-07 | 江苏省电力公司常州供电公司 | Nuclear phase method for digital transformer substation |
| CN102495322B (en) * | 2011-12-22 | 2014-01-08 | 山东电力研究院 | Synchronous performance test method for digital relay protection device based on IEC61850 (International Electrotechnical Commission 61850) |
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