CN101867225B - Debugging method for integrated automation of transformer substation and integration of relaying protection system - Google Patents
Debugging method for integrated automation of transformer substation and integration of relaying protection system Download PDFInfo
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Abstract
The invention discloses a debugging method for integrated automation of a transformer substation and integration of a relaying protection system, which comprises the steps of integrated debugging of simulation parameters and integrated debugging of tidal current parameters. The invention completely change the work idea of taking the subsectional debugging of unit interval layers as a main body in the traditional debugging technology, effectively fuses the configuration situation of a debugging work hardware facility and an inherent technical characteristic of an object to be tested, changes the original device unitization debugging work of one-one correspondence into a pipelining and mass operation, and achieves an maximum degree on the excavation of the operating potential of an engineering test debugging field.
Description
Technical field:
The present invention relates to a kind of integrated automation of transformation stations and relaying protection system adjustment method.
Background technology:
Socioeconomic prosperity has been brought unprecedented opportunity to develop to power industry, and for adapting to the development of local economic construction, electric power infrastructure investment dynamics continues to increase, the sustainable growth of engineering project quantity.At present, how safety, quality, progress and the cost to the power engineering project carries out good Comprehensive Control, and faster and better finished item construction task has become an important subject of present stage electric power infrastructure project project management.
In power construction, power transformation engineering project, the especially construction project of large-scale synthesis automating power substation are because the hinge status in electrical network is an electric power infrastructure project key of project management always; Again because of its receive erection unit kind and model numerous and diverse, relate to that professional technique is wide, process flow is connected factor affecting such as node is many, also be the difficult point in the management of power construction Engineering Control always.In the engineering construction of large-scale synthesis automating power substation, transformer station secondary system is because of characteristics such as logical circuit are complicated, functional configuration is hidden, and the detection of its system's correctness is the big technical barrier during power transformation engineering is built all the time.Therefore, the electrical secondary system debugging technique has its special status as the detection of the transformer station secondary system project quality means of checking on, to research, the improvement of electrical secondary system debugging technique and optimize then significant.
Summary of the invention:
The object of the present invention is to provide a kind of electrical system flow state when operation is gone into operation by transformer station in the engineering debug process, just to realize the integrated automation of transformation stations and the integration of relaying protection system adjustment method of accurately simulation.
Technical solution of the present invention is:
A kind of integrated automation of transformation stations and integration of relaying protection system adjustment method comprise the following steps:
(1) simulation parameter integrated debugging: the cell arrangement at engineering debug initial stage is carried out verification and the secondary direct current system in engineering debug mid-term put in order organizing verification: the one, substation relay protection device, automation measurement and control equipment function are detected; The 2nd, the electrical secondary system loop of realizing corresponding protective relaying device and automation measurement and control equipment logic function is detected; During debugging; The engineering debug personnel at first constitute public debug platform through test associating wiring; Utilize the adjusting instrument various analog variation parameters that input current, combination of voltages become on platform then; All that butt up against on the debug platform are unified debugging by the general character principle function of calibration equipment, the correctness of demo plant functional configuration and logic outlet;
(2) trend parameter integrated debugging: to the electrical system in engineering debug latter stage once, the secondary device state uniting and adjustment stage, debugging stresses is that the logic that transformer station exchanges electrical secondary system and the first and second equipment direct current secondary circuit that links is tested; During test: the engineering debug personnel at first carry out various conventional operation state simulations by the debugging demand to the primary equipment at full station; Constitute the public debug platform of primary system; Utilize the adjusting instrument stable electric trend parameter that input current, combination of voltages become on platform then, and the real-time reflection of primary system running status and electric trend parameter is judged the correctness of secondary circuit to be detected and device through the monitoring electrical secondary system; Specifically comprise
A: once go straight up to method
For the respectively detection of the secondary circuit system of separate current instrument transformer and each electric pressure bus-bar potential transformer at interval of primary system; Feed three-phase alternating voltage, the magnitude of current stable, frequency together through big capacity up-flow and increasing apparatus in the transforming plant primary system; Use high accuracy phase meter and pincerlike meter monitoring its corresponding secondary circuit system power, voltage magnitude and angle relationship then, and judge the loop correctness according to the basic theories characteristic of secondary circuit system power, voltage;
B: the through-flow method of main transformer
Directly add with the 380V stabilized power supply in the three-phase galvanic circle of transformer primary system one side, in other coil sides of transformer, with its primary system three-phase shortcircuit ground connection;--transformer--earth connection--forms the loop between the-the earth at the 380V stabilized power supply; Will produce a higher value short circuit current this moment at primary system; But much smaller than the primary system operating current; All current transformer primary sides that comprise in the scope in this loop all can flow through this electric current; Its secondary side also can induce the respective electrical flow valuve by work no-load voltage ratio itself, can detect size, direction, the angle of three-phase electricity flow valuve in the corresponding secondary circuit system rapidly, easily with high accuracy phase meter and pincerlike meter, thereby confirm the correctness in required detection loop.
Feeding 3%-5%, the magnitude of current that three-phase is stablized, the alternating voltage of frequency is the primary system rated voltage together through big capacity up-flow and increasing apparatus in the transforming plant primary system in the steps A is the 10%-20% of primary system rated current.
The present invention has thoroughly changed the work idea that is the main body with the debugging of unit interval layer branch in the traditional debugging technology; Exchange that the hardware facility configuring condition is made in trial work and tested object inherent technology characteristic has been carried out effective fusion; Make the work of device unit debugging one to one originally become streamlined, mass operation, examination transfers the excavation of work on the spot potentiality to reach at utmost to engineering.Electrical system flow state when the present invention goes into operation operation with transformer station just realizes accurately simulation in the engineering debug process, strengthened systematicness, actual effect and the controllability of debugging work.The present invention simulates parameter integrated debugging technology, makes up public debug platform through current circuit series connection, voltage and outlet loop parallel way, carries out the method for substation relay protection and automation equipment logic function and direct current outlet secondary circuit debugging.Trend parameter integrated debugging technology of the present invention through the simulation of the through-flow technology realization of technology of once going straight up to and main transformer transforming plant primary system load flow different conditions, is carried out the method that comprehensive system detects to substation secondary alternating current, voltage circuit.
Description of drawings:
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Fig. 1 is the voltage circuit parallel connection sketch map of the simulation parameter integrated debugging of one embodiment of the invention.
Fig. 2 is the voltage circuit series connection sketch map of the simulation parameter integrated debugging of one embodiment of the invention.
Fig. 3 is that the breaker tripping and closing control contact of the simulation parameter integrated debugging of one embodiment of the invention connects sketch map.
Fig. 4 is an electrical system cyclization of the same electric pressure trend simulated field testing primary system sketch map of the method for once going straight up to of one embodiment of the invention.
Fig. 5 is that electrical system of different electric pressures of the method for once going straight up to of one embodiment of the invention is passed through trend simulated field testing primary system sketch map.
Fig. 6 is the on-the-spot testing primary system of the through-flow method of the main transformer of an one embodiment of the invention sketch map.
Annotate: the flow direction of " → " expression electric current on primary system equipment in all sketch mapes, "------" path of expression electric current in ground network, the flow direction of " → " expression electric current on the ground network path.
Embodiment:
A kind of integrated automation of transformation stations and integration of relaying protection system adjustment method comprise the following steps:
(1) simulation parameter integrated debugging: the cell arrangement at engineering debug initial stage is carried out verification and the secondary direct current system in engineering debug mid-term put in order organizing verification: the one, substation relay protection device, automation measurement and control equipment function are detected; The 2nd, the electrical secondary system loop of realizing corresponding protective relaying device and automation measurement and control equipment logic function is detected; During debugging; The engineering debug personnel at first constitute public debug platform through test associating wiring; Utilize the adjusting instrument various analog variation parameters that input current, combination of voltages become on platform then; All that butt up against on the debug platform are unified debugging by the general character principle function of calibration equipment, the correctness of demo plant functional configuration and logic outlet;
In the present embodiment 1, on the south the RCS-900 equipment series and the state electricity south of the auspicious guarantor of continuing company be example from the PSL-600 of company series 220kV line protective devices.With the code test line with all by line transfer line protection device secondary AC voltage circuit parallel connection, with the code test line with all by line transfer line protection device secondary AC current circuit connect (like Fig. 1, Fig. 2).
2, select the subsequent use outlet contact of each line protective devices exit relay to form series loop through a subsequent use pressing plate of this device respectively, unified parallel connection (connected mode such as Fig. 3) then.
After wiring is accomplished; Electric current, voltage and pressing plate contact line are inserted the timely indirection point test input of voltage, current output terminal of microcomputer protective relay tester respectively; The public debug platform of final formation is then according to the debugging operate condition table of working out in advance, according to debugging rules at public debug platform input simulative debugging parameter; Carry out combined debugging, and combine detection signal to judge the correctness of being put logic function by trial assembly.
(2) trend parameter integrated debugging: to the electrical system in engineering debug latter stage once, the secondary device state uniting and adjustment stage, debugging stresses is that the logic that transformer station exchanges electrical secondary system and the first and second equipment direct current secondary circuit that links is tested; During test: the engineering debug personnel at first carry out various conventional operation state simulations by the debugging demand to the primary equipment at full station; Constitute the public debug platform of primary system; Utilize the adjusting instrument stable electric trend parameter that input current, combination of voltages become on platform then, and the real-time reflection of primary system running status and electric trend parameter is judged the correctness of secondary circuit to be detected and device through the monitoring electrical secondary system; Specifically comprise
A: once go straight up to method
For the respectively detection of the secondary circuit system of separate current instrument transformer and each electric pressure bus-bar potential transformer at interval of primary system; Feed three-phase alternating voltage (being the 3%-5% of primary system rated voltage), the magnitude of current (for the 10%-20% of primary system rated current) stable, frequency together through big capacity up-flow and increasing apparatus in the transforming plant primary system; Use high accuracy phase meter and pincerlike meter monitoring its corresponding secondary circuit system power, voltage magnitude and angle relationship then, and judge the loop correctness according to the basic theories characteristic of secondary circuit system power, voltage;
In the present embodiment:
(1) simulates with an electrical system cyclization of electric pressure trend.
Stress test relevant voltage grade is public, the correctness in metering secondary voltage system circuit, corresponding interval secondary current system circuit and bus differential protection secondary current overlapping system loop etc.(see figure 4)
(2) electrical system of different electric pressures is passed through the trend simulation.
The correctness in stress test corresponding interval secondary current system circuit, main transformer longitudinal difference protection secondary current overlapping system loop, bus differential protection secondary current overlapping system loop etc.(see figure 5)
B: the through-flow method of main transformer
Directly add with the 380V stabilized power supply in the three-phase galvanic circle of transformer primary system one side, in other coil sides of transformer, with its primary system three-phase shortcircuit ground connection;--transformer--earth connection--forms the loop between the-the earth at the 380V stabilized power supply; Will produce a higher value short circuit current this moment at primary system; But much smaller than the primary system operating current; All current transformer primary sides that comprise in the scope in this loop all can flow through this electric current; Its secondary side also can induce the respective electrical flow valuve by work no-load voltage ratio itself, can detect size, direction, the angle of three-phase electricity flow valuve in the corresponding secondary circuit system rapidly, easily with high accuracy phase meter and pincerlike meter, thereby confirm the correctness in required detection loop.
Simulate in main transformer three passing through property of side trends in the present embodiment.The correctness (see figure 6) in stress test corresponding interval secondary current system circuit, main transformer longitudinal difference protection secondary current overlapping system loop and main transformer body sleeve rising seat Current Transformer Secondary current system loop etc.
Claims (2)
1. the integrated automation of transformation stations and integration of relaying protection system adjustment method is characterized in that: comprise the following steps:
(1) simulation parameter integrated debugging: the cell arrangement at engineering debug initial stage is carried out verification and the secondary direct current system in engineering debug mid-term put in order organizing verification: the one, substation relay protection device, automation measurement and control equipment function are detected; The 2nd, the electrical secondary system loop of realizing corresponding protective relaying device and automation measurement and control equipment logic function is detected; During debugging; The engineering debug personnel at first constitute public debug platform through test associating wiring; Utilize the adjusting instrument various analog variation parameters that input current, combination of voltages become on platform then; All that butt up against on the debug platform are unified debugging by the general character principle function of calibration equipment, the correctness of demo plant functional configuration and logic outlet;
(2) trend parameter integrated debugging: to the electrical system in engineering debug latter stage once, the secondary device state uniting and adjustment stage, debugging stresses is that the logic that transformer station exchanges electrical secondary system and the first and second equipment direct current secondary circuit that links is tested; During test: the engineering debug personnel at first carry out various conventional operation state simulations by the debugging demand to the primary equipment at full station; Constitute the public debug platform of primary system; Utilize the adjusting instrument stable electric trend parameter that input current, combination of voltages become on platform then, and the real-time reflection of primary system running status and electric trend parameter is judged the correctness of secondary circuit to be detected and device through the monitoring electrical secondary system; Specifically comprise
A: once go straight up to method
For the respectively detection of the secondary circuit system of separate current instrument transformer and each electric pressure bus-bar potential transformer at interval of primary system; Feed three-phase alternating voltage, the magnitude of current stable, frequency together through big capacity up-flow and increasing apparatus in the transforming plant primary system; Use high accuracy phase meter and pincerlike meter monitoring its corresponding secondary circuit system power, voltage magnitude and angle relationship then, and judge the loop correctness according to the basic theories characteristic of secondary circuit system power, voltage;
B: the through-flow method of main transformer
Directly add with the 380V stabilized power supply in the three-phase galvanic circle of transformer primary system one side, in other coil sides of transformer, with its primary system three-phase shortcircuit ground connection;--transformer--earth connection--forms the loop between the-the earth at the 380V stabilized power supply; Will produce a higher value short circuit current this moment at primary system; But much smaller than the primary system operating current; All current transformer primary sides that comprise in the scope in this loop all can flow through this electric current; Its secondary side also can induce the respective electrical flow valuve by work no-load voltage ratio itself, detects size, direction, the angle of three-phase electricity flow valuve in the corresponding secondary circuit system with high accuracy phase meter and pincerlike meter, thereby confirms the correctness in required detection loop.
2. the integrated automation of transformation stations according to claim 1 and integration of relaying protection system adjustment method is characterized in that: feeding 3%-5%, the magnitude of current that three-phase is stablized, the alternating voltage of frequency is the primary system rated voltage together through big capacity up-flow and increasing apparatus in the transforming plant primary system in the steps A is the 10%-20% of primary system rated current.
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| CN101969232B (en) * | 2010-10-29 | 2012-05-23 | 广东电网公司电力科学研究院 | Automatic testing method and device for power grid video and environment monitoring system |
| CN102593737B (en) * | 2012-03-15 | 2016-11-02 | 河北省电力公司电力科学研究院 | Relay protection vector checkout facility method before putting into operation with the transformer station of capacitance compensation |
| CN102801381B (en) * | 2012-08-15 | 2014-10-29 | 上海交通大学 | Controllable transformer device capable of controlling amplitude and phase angle of voltage individually and control method for same |
| CN103207344A (en) * | 2013-03-07 | 2013-07-17 | 云南电力试验研究院（集团）有限公司电力研究院 | Method used for checking substation secondary current return circuit and based on main transformer short circuit test |
| CN104076807B (en) * | 2013-03-28 | 2017-06-06 | 北京电力经济技术研究院 | The adjustment method of the automated system of intelligent substation |
| CN103308811B (en) * | 2013-06-27 | 2015-11-04 | 国家电网公司 | 750kV transformer station subsystem debugging apparatus |
| CN103576027A (en) * | 2013-11-04 | 2014-02-12 | 安徽鑫龙电器股份有限公司 | Debug method based on substation integrated automation and relaying protection system integration |
| CN106443294B (en) * | 2016-08-15 | 2019-06-14 | 国家电网公司 | The intake circuit method of calibration and equipment of transforming plant protecting device secondary circuit |
| CN106199313B (en) * | 2016-08-15 | 2019-03-08 | 国家电网公司 | The amount of the outputing circuit method of calibration and equipment of transforming plant protecting device secondary circuit |
| CN107037307B (en) * | 2017-03-30 | 2019-06-04 | 西安热工研究院有限公司 | A kind of secondary through-flow method of power plant main system c-type |
| CN107703391A (en) * | 2017-10-17 | 2018-02-16 | 云南电网有限责任公司电力科学研究院 | A kind of secondary circuit detecting system of transformer station |
| CN112838572A (en) * | 2021-01-05 | 2021-05-25 | 贵州长征输配电电气有限公司 | 220kVA transformer substation relay protection system and installation and debugging method |
| CN114089163B (en) * | 2021-11-23 | 2024-03-08 | 广东电网有限责任公司 | Equipment state detection circuit and equipment state detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5859596A (en) * | 1996-08-30 | 1999-01-12 | Csi Technology, Inc. | Switchyard equipment monitoring system and communications network therefor |
| CN2759027Y (en) * | 2004-12-28 | 2006-02-15 | 山东达驰电气股份有限公司 | Special intelligent electric power station for oil field |
| CN2884641Y (en) * | 2006-04-08 | 2007-03-28 | 张树仁 | Overvoltage limit and small current earthing selective integrator of power transfer and distribution system |
| WO2009053309A1 (en) * | 2007-10-25 | 2009-04-30 | Abb Research Ltd | System level testing for substation automation systems |
-
2010
- 2010-05-31 CN CN2010101869143A patent/CN101867225B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5859596A (en) * | 1996-08-30 | 1999-01-12 | Csi Technology, Inc. | Switchyard equipment monitoring system and communications network therefor |
| CN2759027Y (en) * | 2004-12-28 | 2006-02-15 | 山东达驰电气股份有限公司 | Special intelligent electric power station for oil field |
| CN2884641Y (en) * | 2006-04-08 | 2007-03-28 | 张树仁 | Overvoltage limit and small current earthing selective integrator of power transfer and distribution system |
| WO2009053309A1 (en) * | 2007-10-25 | 2009-04-30 | Abb Research Ltd | System level testing for substation automation systems |
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