CN109101714A - A method of verifying protective relaying device logic function - Google Patents
A method of verifying protective relaying device logic function Download PDFInfo
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Abstract
The invention discloses a kind of verification methods of protective relaying device logic function, and carry out in accordance with the following steps: S1 builds analogue system using simulation software MATLAB in computer systems；S2 generates COMTRADE file；COMTRADE file is imported protective relaying device by S3；S4 data correlation；S5 wave shape playback；Computer system builds electric power system model according to national standard using MATLAB; for simulating the electric system of protective relaying device real protection at the scene; the parameters such as capacity, voltage, impedance, the load of the generator of electric system, transformer, bus, route and various loads are set; the different method of operation of setting system; various failure modes, and COMTRADE file is generated in varied situations；Protective relaying device is that the COMTRADE file for generating analogue system imports, the logic of wave shape playback verifying protection, action behavior.
Description
Technical field:
The invention belongs to the technical field of Automation of Electric Systems device, in particular to a kind of verifying protective relaying device logic function
The method of energy.
Background technique:
The analysis of protective relaying device function at present has theoretical research and experimental study two ways, and theory analysis is extremely important
, it illustrates the basic principle of relay protection of power system.But the complexity of electric system, many problems only lean on theory analysis
It is inadequate, therefore experimental study is necessary means.The experiment of protective relaying device can be carried out in actual electric system,
It can be carried out in the electric system of simulation, verification experimental verification is carried out in practical power systems often by the safety of electric system, warp
The limitation of Ji operation, and use and tested in simulation system then without these limitations.
Power system simulation method has physical analogy and digital simulation, mainly either using physics simulation test system
RTDS analogue system, physical analogy are according to the theory of similarity, with the similar finite element with practical power systems with same physical properties
What part was set up, it is mainly made of simulation generator, simulation excitation system, analogue transformer, transmission line of electricity etc., these elements
It is all actual physical device, therefore it is very big to establish physical simulation system investment.Most common digital simulation is exactly that RTDS is counted in real time
Word emulating instrument is a kind of device for being specially designed for Transient Electromagnetic Phenomena in research electric system.But either physics is dynamic
Mould experimental system or RTDS analogue system is bulky, price is more expensive, the at present reality of only some big R&D institutions
It tests room or special testing agency is just equipped with, and even if having moving die experiment system in the protective relaying device development phase
It is likely to require and verifies repeatedly, experimentation cost is also very high.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without
It should be considered as recognizing or implying in any form that the information constitutes existing skill already known to those of ordinary skill in the art
Art.
Summary of the invention:
The purpose of the present invention is to provide a kind of at low cost, convenient, flexible relay protection logic verification methods with extremely important
Realistic meaning, easily the principle of protective relaying device protection is verified, is evaluated, is improved using this method.
To achieve the above object, the present invention provides a kind of verification methods of protective relaying device logic function, according to such as
Lower step carries out:
S1. analogue system is built using simulation software MATLAB in computer systems；
S2. COMTRADE file is generated；
S3. COMTRADE file is imported into protective relaying device；
S4. data correlation；
S5. wave shape playback.
Computer system is taken using MATLAB according to " 26864 electric system of GB/T is after protection product dynamic simulation test " national standard
Electric power system model is built, for simulating the electric system of protective relaying device real protection at the scene, the hair of electric system is set
Motor, transformer, bus, route and various loads the parameters such as capacity, voltage, impedance, load, the different operation of setting system
Mode, various failure modes, and COMTRADE file is generated in varied situations.
Protective relaying device is that the COMTRADE file for generating analogue system imports, and wave shape playback verifying protection is patrolled
It collects, action behavior.
The technical solution that present aspect further limits are as follows:
Further, step S1 specifically:
S1.1 builds system model, including power supply, transformer, bus, route, load, voltage transformer, electric current using MATLAB
Mutual inductor；
The parameter of model element is arranged in S1.2, and power system capacity, transformer parameter, line parameter circuit value, load capacity, voltage transformer become
Than, current transformer ratio；
Sample frequency is arranged using powergui module in S1.3, and sample frequency is set as the integral multiple of protective relaying device,
S1.4 be arranged area in, external area error point, and to fault module carry out outside control, controlled using matlab shell script
Fault point, fault type, fault time, fault resstance size；
Further, step S2 specifically:
The data of simulation process are generated COMTRADE file, including sample frequency, sampled value, channel system by comtrade module
It counts, sample frequency carries out extraction data according to the sample frequency of protective relaying device in the COMTRADE file of generation；
Further, step S3 specifically:
Protective relaying device debugs Ethernet interface and supports ftp function, using ftp client by COMTRADE file gatherer
Memory；
Further, step S4 specifically:
COMTRADE file, the associations of row of channels of going forward side by side data, the setting of channel factor are read in protective relaying device liquid crystal；
It further, further include step S6: the analysis of protective relaying device action behavior.
Further, in above-mentioned steps S1.3, protective relaying device sample frequency is 1200, and analogue system sample frequency is set
It is set to 12000.
A kind of verification method of protective relaying device logic function carries out in accordance with the following steps:
S1 is in PC machine using the SIMULINK module of MATLAB according to " 26864 electric system of GB/T is tried after protection product dynamic model
Test " create infinitely great power supply, simulation generator, transformer, transmission line of electricity, breaker, voltage transformer, current transformer mould
Block；
S2 built according to canonical system in " 26864 electric system of GB/T after protection product dynamic simulation test " national standard to be emulated be
System；
The parameter of each element: rated capacity, transformer connection mode, short-circuit impedance etc. is arranged in S3；
Malfunctioning module is arranged in S4, including fault point, failure are separate, ground resistance size, fault time etc.；
The setting of S5 recorder data channel, the channel sequence that the emulation data that will be recorded record as required are arranged, are put in order
It is exactly the channel sequence recorded in COMTRADE file；
The setting of S6 simulation parameter, simulation algorithm, the simulation step length etc. that setting emulation uses, analogue system sample frequency can be set
It is set to 12000；
S7 generates cfg file, including recording port number, channel description, dimension, a sub-value, two sub-values, sampling number, sampling frequency
The information such as rate, sampling beginning and ending time.
S8 generates dat file, extracts sampling instant according to the sample frequency of protective relaying device and each sampling instant is each logical
The sampled value in road generates data file；
S9 PC machine uses ftp client's end connection device, clothes of the protective device as ftp by ethernet line protective relaying device
It is engaged in device end, comtrade file being uploaded to the waveback catalogue of device；
S10 corresponds to data channel inside comtrade file in liquid crystal interface setting voltage, the current channel of protective relaying device
Channel number as shown in fig. 6, being device on the left of interface by the collected all channels of practical plug-in unit, interface right-hand unit acquires
The channel number of recording in the corresponding cfg file from recording in channel establishes lifting device acquisition channel and recording according to the adjusting of this interface
Association between file record data channel；
S11 converts voltage, electric current to pair in liquid crystal meeting the setting voltage, current data channel factor of protective relaying device
Scale value after the analog-to-digital conversion answered, as shown in fig. 7, the channel data of simulation software admission is with protective relaying device by exchanging
If the CT of plug-in unit, numerical value is consistent after analog-to-digital conversion, all adjusting is 1.0 to channel factor, if inconsistent need basis
Actual size tuning coefficient, tuning coefficient=recorded wave file channel numerical value/protective device channel analog-to-digital conversion scale value；
S12 setting needs the section of the Wave data played back can be according to actual needs in use if recorder data is very long
Choose the Wave data section being concerned about；
S13 starts Wave data playback, reads data, root in the automatic wave file of A/D sampling module of protective relaying device
The scale value that each sample point data is converted to analog-to-digital conversion according to the channel factor of the voltage of setting, current data, as true
Real operation data, each sampled point calculate primary and carry out relay protective scheme judgement, protective relaying device after Wave data playback
Action behavior is as shown in Figure 8.
The action behavior of protective relaying device is analyzed after S14 playback, confirms the movement of device based on the analysis results
Logic improves action logic.
Compared with prior art, the invention has the following beneficial effects:
(1) experimental method of the invention makes the logic checking of protective relaying device not need true physics moving die system, and
In device development process repeatedly verify, it is easy to use, flexible.
(2) software that the present invention needs is the software of the maturation such as matlab, ftp client.
(3) present invention does not need additional device, and the protective relaying device of exploitation is directly connected to by ftp client,
The setting of channel association and channel factor is carried out in the liquid crystal interface of protective device.
Detailed description of the invention:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is flow chart of the invention；
Fig. 3 is that analogue system generates explanation；
Fig. 4 is that COMTRADE recorder data generates explanation；
Fig. 5 is that Wave data imports and play back explanation；
Fig. 6 is that Wave data channel is associated with interface；
Fig. 7 is Wave data channel factor set interface；
Fig. 8 is action report of protection device after Wave data playback.
Specific embodiment:
Specific embodiments of the present invention will be described in detail below, it is to be understood that protection scope of the present invention is not had
The limitation of body embodiment.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
1) use the SIMULINK module of MATLAB according to " 26864 electric system of GB/T is after protection product dynamic model in PC machine
Test " create infinitely great power supply, simulation generator, transformer, transmission line of electricity, breaker, voltage transformer, current transformer mould
Block；
2) built according to canonical system in " 26864 electric system of GB/T after protection product dynamic simulation test " national standard to be emulated be
System；
3) parameter of each element: rated capacity, transformer connection mode, short-circuit impedance etc. is set；
4) malfunctioning module is set, including fault point, failure are separate, ground resistance size, fault time etc.；
5) recorder data channel is arranged, and the channel sequence that the emulation data that will be recorded record as required arranges, and puts in order
It is exactly the channel sequence recorded in COMTRADE file；
6) simulation parameter is arranged, and simulation algorithm, the simulation step length etc. that setting emulation uses, analogue system sample frequency can be set
It is 12000；
7) cfg file, including recording port number, channel description, dimension, a sub-value, two sub-values, sampling number, sampling frequency are generated
The information such as rate, sampling beginning and ending time.
8) dat file is generated, sampling instant is extracted according to the sample frequency of protective relaying device and each sampling instant is each logical
The sampled value in road generates data file；
9) PC machine uses ftp client's end connection device, clothes of the protective device as ftp by ethernet line protective relaying device
It is engaged in device end, comtrade file being uploaded to the waveback catalogue of device；
10) data channel inside comtrade file is corresponded in liquid crystal interface setting voltage, the current channel of protective relaying device
Channel number as shown in fig. 6, being device on the left of interface by the collected all channels of practical plug-in unit, interface right-hand unit acquires
The channel number of recording in the corresponding cfg file from recording in channel establishes lifting device acquisition channel and recording according to the adjusting of this interface
Association between file record data channel；
11) it in liquid crystal meeting the setting voltage, current data channel factor of protective relaying device, converts voltage, electric current to pair
Scale value after the analog-to-digital conversion answered, as shown in fig. 7, the channel data of simulation software admission is with protective relaying device by exchanging
If the CT of plug-in unit, numerical value is consistent after analog-to-digital conversion, all adjusting is 1.0 to channel factor, if inconsistent need basis
Actual size tuning coefficient, tuning coefficient=recorded wave file channel numerical value/protective device channel analog-to-digital conversion scale value；
12) setting needs the section of the Wave data played back that can select according to actual needs in use if recorder data is very long
Take the Wave data section of care；
13) start Wave data playback, read data, root in the automatic wave file of A/D sampling module of protective relaying device
The scale value that each sample point data is converted to analog-to-digital conversion according to the channel factor of the voltage of setting, current data, as true
Real operation data, each sampled point calculate primary and carry out relay protective scheme judgement, protective relaying device after Wave data playback
Action behavior is as shown in Figure 8.
14) action behavior of protective relaying device is analyzed after playing back, confirms the movement of device based on the analysis results
Logic improves action logic.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These are retouched
It states and is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out very much
Change and changes.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and in fact
Border application, so that those skilled in the art can be realized and utilize a variety of different exemplary embodiment party of the invention
Case and various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (8)
1. a kind of verification method of protective relaying device logic function carries out in accordance with the following steps:
S1 builds analogue system using simulation software MATLAB in computer systems；
S2 generates COMTRADE file；
COMTRADE file is imported protective relaying device by S3；
S4 data correlation；
S5 wave shape playback；
Computer system builds electric power system model according to national standard using MATLAB, real at the scene for simulating protective relaying device
The electric system of border protection, be arranged generator, transformer, bus, route and the capacity of various loads of electric system, voltage,
The parameters such as impedance, load, the different method of operation of setting system, various failure modes, and generate in varied situations
COMTRADE file；
Protective relaying device is that the COMTRADE file for generating analogue system imports, and the logic of wave shape playback verifying protection is moved
Make behavior.
2. the verification method of protective relaying device logic function according to claim 1, it is characterised in that: step S1 is specific
Are as follows:
S1.1 builds system model, including power supply, transformer, bus, route, load, voltage transformer, electric current using MATLAB
Mutual inductor；
The parameter of model element is arranged in S1.2, and power system capacity, transformer parameter, line parameter circuit value, load capacity, voltage transformer become
Than, current transformer ratio；
Sample frequency is arranged using powergui module in S1.3, and sample frequency is set as the integral multiple of protective relaying device,
S1.4 be arranged area in, external area error point, and to fault module carry out outside control, controlled using matlab shell script
Fault point, fault type, fault time, fault resstance size.
3. the verification method of protective relaying device logic function according to claim 1, it is characterised in that: step S2 is specific
Are as follows:
The data of simulation process are generated COMTRADE file, including sample frequency, sampled value, channel system by comtrade module
It counts, sample frequency carries out extraction data according to the sample frequency of protective relaying device in the COMTRADE file of generation.
4. the verification method of protective relaying device logic function according to claim 1, it is characterised in that: step S3 is specific
Are as follows:
Protective relaying device debugs Ethernet interface and supports ftp function, using ftp client by COMTRADE file gatherer
Memory.
5. the verification method of protective relaying device logic function according to claim 1, it is characterised in that: step S4 is specific
Are as follows:
COMTRADE file, the associations of row of channels of going forward side by side data, the setting of channel factor are read in protective relaying device liquid crystal.
6. the verification method of protective relaying device logic function according to claim 1, it is characterised in that: further include step
S6: the analysis of protective relaying device action behavior.
7. the verification method of protective relaying device logic function according to claim 2, it is characterised in that: step S1.3
In, protective relaying device sample frequency is 1200, and analogue system sample frequency is set as 12000.
8. a kind of verification method of protective relaying device logic function carries out in accordance with the following steps:
S1 is in PC machine using the SIMULINK module of MATLAB according to " 26864 electric system of GB/T is tried after protection product dynamic model
Test " create infinitely great power supply, simulation generator, transformer, transmission line of electricity, breaker, voltage transformer, current transformer mould
Block；
S2 built according to canonical system in " 26864 electric system of GB/T after protection product dynamic simulation test " national standard to be emulated be
System；
The parameter of each element: rated capacity, transformer connection mode, short-circuit impedance etc. is arranged in S3；
Malfunctioning module is arranged in S4, including fault point, failure are separate, ground resistance size, fault time etc.；
The setting of S5 recorder data channel, the channel sequence that the emulation data that will be recorded record as required are arranged, are put in order
It is exactly the channel sequence recorded in COMTRADE file；
The setting of S6 simulation parameter, simulation algorithm, the simulation step length etc. that setting emulation uses, analogue system sample frequency can be set
It is set to 12000；
S7 generates cfg file, including recording port number, channel description, dimension, a sub-value, two sub-values, sampling number, sampling frequency
The information such as rate, sampling beginning and ending time；
S8 generates dat file, extracts sampling instant and each channel of each sampling instant according to the sample frequency of protective relaying device
Sampled value generates data file；
S9 PC machine uses ftp client's end connection device, clothes of the protective device as ftp by ethernet line protective relaying device
It is engaged in device end, comtrade file being uploaded to the waveback catalogue of device；
S10 corresponds to data channel inside comtrade file in liquid crystal interface setting voltage, the current channel of protective relaying device
Channel number as shown in fig. 6, being device on the left of interface by the collected all channels of practical plug-in unit, interface right-hand unit acquires
The channel number of recording in the corresponding cfg file from recording in channel establishes lifting device acquisition channel and recording according to the adjusting of this interface
Association between file record data channel；
S11 converts voltage, electric current to pair in liquid crystal meeting the setting voltage, current data channel factor of protective relaying device
Scale value after the analog-to-digital conversion answered, as shown in fig. 7, the channel data of simulation software admission is with protective relaying device by exchanging
If the CT of plug-in unit, numerical value is consistent after analog-to-digital conversion, all adjusting is 1.0 to channel factor, if inconsistent need basis
Actual size tuning coefficient, tuning coefficient=recorded wave file channel numerical value/protective device channel analog-to-digital conversion scale value；
S12 setting needs the section of the Wave data played back can be according to actual needs in use if recorder data is very long
Choose the Wave data section being concerned about；
S13 starts Wave data playback, reads data, root in the automatic wave file of A/D sampling module of protective relaying device
The scale value that each sample point data is converted to analog-to-digital conversion according to the channel factor of the voltage of setting, current data, as true
Real operation data, each sampled point calculate primary and carry out relay protective scheme judgement；
The action behavior of protective relaying device is analyzed after S14 playback, confirms the action logic of device based on the analysis results
Or action logic is improved.
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| CN111025042A (en) * | 2019-11-11 | 2020-04-17 | 贵州电网有限责任公司 | Logic simulation and verification system of relay protection device |
| CN111062140A (en) * | 2019-12-24 | 2020-04-24 | 广东电网有限责任公司 | Real-time digital simulation modeling method and device for power system and simulation test system |
| CN111638413A (en) * | 2020-06-02 | 2020-09-08 | 国家电网有限公司 | Intelligent substation fault waveform playback analysis system and method |
| CN112036023A (en) * | 2020-08-26 | 2020-12-04 | 南京国电南自维美德自动化有限公司 | Software integrated generation system for generator transformer bank protection device |
| CN112578276A (en) * | 2020-11-24 | 2021-03-30 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Relay protection dynamic performance test system |
| CN112784382A (en) * | 2021-01-22 | 2021-05-11 | 国网山东省电力公司德州市陵城区供电公司 | Simulink simulation-based power distribution network three-level protection setting calculation method |
| CN113283068A (en) * | 2021-05-18 | 2021-08-20 | 天津凯发电气股份有限公司 | Method for improving alternating current sampling precision and reliability of relay protection device |
| CN113420409A (en) * | 2021-05-17 | 2021-09-21 | 云南电网有限责任公司 | Relay protection device operation state prediction method based on deep learning |
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| CN112784382A (en) * | 2021-01-22 | 2021-05-11 | 国网山东省电力公司德州市陵城区供电公司 | Simulink simulation-based power distribution network three-level protection setting calculation method |
| CN113420409A (en) * | 2021-05-17 | 2021-09-21 | 云南电网有限责任公司 | Relay protection device operation state prediction method based on deep learning |
| CN113283068A (en) * | 2021-05-18 | 2021-08-20 | 天津凯发电气股份有限公司 | Method for improving alternating current sampling precision and reliability of relay protection device |
| CN113283068B (en) * | 2021-05-18 | 2023-05-16 | 天津凯发电气股份有限公司 | Method for improving alternating current sampling precision and reliability of relay protection device |
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Application publication date: 20181228 |