CN201203987Y - Experimental equipment for teaching power system automation and relay protection - Google Patents
Experimental equipment for teaching power system automation and relay protection Download PDFInfo
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- CN201203987Y CN201203987Y CNU2008200694991U CN200820069499U CN201203987Y CN 201203987 Y CN201203987 Y CN 201203987Y CN U2008200694991 U CNU2008200694991 U CN U2008200694991U CN 200820069499 U CN200820069499 U CN 200820069499U CN 201203987 Y CN201203987 Y CN 201203987Y
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Abstract
The utility model relates a teaching experiment apparatus for power system automation and relay protection, comprising an electric power system automation apparatus test device (I), a relay protection experiment device (II), a computer on-line monitoring system (III). The relay protection experiment device comprises a three-phase transformer, a dual-loop analogue transmission line, micro-computer type electricity generator protection device, micro-computer type transformer protection device, and a micro-computer circuit protection device. Input of the micro-computer type generator protection device is connected to an input/output phase line of the synchronous generator, output of the synchronous generator is connected to a three-phase transformer, input of the micro-computer type transformer protection device is connected to output of primary and secondary winding of three-phase transformer, output of the three-phase transformer is connected to double loop analogue transmission circuit by a circuit breaker, and the inlet and outlet terminal of the dual-loop analogue electric circuit is connected to micro-computer type circuit protection device. The utility model solves problems of no generator relay protection experiment or transformer relay protection experiment, and lack of background monitoring in the original experiment device.
Description
Technical field
The utility model relates to a kind of teaching experimental equipment, is specifically related to a kind of Automation of Electric Systems and relay protection teaching experimental equipment.
Background technology
In order to match with " Power System Automation Equipment " and " relay protection " teaching material; the Automation of Electric Systems specialty of national universities all needs to offer the related experiment of Power System Automation Equipment and relay protection; at present; the Power System Automation Equipment of domestic most of colleges and universities and relay protection experimental equipment generally adopt the comprehensive automation of electric power system experiment porch of bright Science and Technology Ltd. in sky, Zhejiang or the Wuhan big electric power automatic technique Ltd of China; utilizing the experiment porch of these two companies can finish some of aut.eq. basically must experimental project and some experimental projects of circuit relay protection; but owing to do not contain three-phase transformer in its experimental facilities; can not carry out the relay protection experimental of generator and the relay protection experimental of transformer; its experimental facilities does not contain the microcomputer online monitoring system; no backstage monitoring function; and the direct ground connection of its generator neutral point; and the neutral point of the synchronous generator of on-the-spot operation is earth-free, is not inconsistent with the scene is actual.
In order to overcome the defective that present Power System Automation Equipment and relay protection experimental equipment exist; in order more to meet on-the-spot ruuning situation and to do more experiment; we improve the comprehensive automation of electric power system experiment porch of bright Science and Technology Ltd. in sky, Zhejiang or the Wuhan big electric power automatic technique Ltd of China; a kind of new Automation of Electric Systems and relay protection teaching experimental equipment have been developed; this equipment can carry out the microcomputer protective relay of synchronous generator; the microcomputer protective relay of transformer; overwhelming majority's experiment of the microcomputer protective relay of double back transmission line; can carry out simultaneously the excitation of synchronous generator; speed governing; the operation characteristic experiment of experiment of aut.eq. such as the accurate same period and synchronous generator; the online demonstration and the distant place control of experimental facilities state be can realize by means of the microcomputer online monitoring system, thereby the Automation of Electric Systems and the relay protection teaching experimental equipment more perfect functions of institution of higher learning guaranteed; more approaching with on-the-spot ruuning situation.
Summary of the invention
The purpose of this utility model provides a kind of Automation of Electric Systems and relay protection teaching experimental equipment; solved and do not contained three-phase transformer in the former experimental facilities; can not carry out the relay protection experimental of generator and the relay protection experimental and the experimental facilities of transformer and not contain the microcomputer online monitoring system, no backstage monitoring function problem.
For achieving the above object, the utility model adopts following technical scheme:
A kind of Automation of Electric Systems and relay protection teaching experimental equipment, it is by Power System Automation Equipment experimental facilities (I), relay protection experimental equipment (II), microcomputer online monitoring system (III) three parts are formed, described Power System Automation Equipment experimental facilities (I) comprises automatic excitation adjustor of generator, the generator arrangements for speed regulation, generator synchronous device, synchronous generator, direct current motor, the input of automatic excitation adjustor of generator connects civil power, the output of automatic excitation adjustor of generator connects the field copper of synchronous generator, the rotor of synchronous generator connects dc motor output shaft, the output of generator arrangements for speed regulation connects the armature winding of direct current motor, the generator synchronous device of electric measurement signal termination at isolating switch two ends on the synchronous generator outlet line; Relay protection experimental equipment (II) is by three-phase transformer, two times transmission line simulations, the microcomputer type protection equipment for generator, the microcomputer type protection equipment for transformer, the microcomputer type line protective devices are formed, synchronous generator is the two termination microcomputer type protection equipment for generator input of a phase winding wherein, the output of synchronous generator connects three-phase transformer, the former limit winding of three-phase transformer and the current measurement of secondary winding output connect the input of microcomputer type protection equipment for transformer, the output of three-phase transformer is connected into two transmission line simulations that return by isolating switch, and the end of incoming cables current measurement output of two times transmission line simulations and leading-out terminal current measurement output connect the input of microcomputer type line protective devices; Microcomputer online monitoring system (III) by network communication equipment, be equipped with the monitoring daemon software the supervisory system computing machine form, supervisory system computer and network communication facilities is connected by standard communication.
Described automatic excitation adjustor of generator comprises single-phase voltage regulating device, bridge rectifier circuit, the input order phase civil power of pressure regulator, the output of pressure regulator connects the input of bridge rectifier bridge, the output of bridge rectifier bridge connects the field copper of synchronous generator, and the two ends of field copper are parallel with the demagnetization circuit of a degaussing switch and de-excitation resistance series connection formation.
Described generator arrangements for speed regulation comprise three-phase transformer, three-phase controllable silicon fully controlled bridge rectifier, smoothing reactor, direct current motor, the input of three-phase transformer connects the three-phase mains, the output of three-phase transformer is connected into three-phase controllable silicon fully controlled bridge rectifier, and the output of three-phase controllable silicon fully controlled bridge rectifier connects the armature winding of direct current motor by smoothing reactor.
Described generator synchronous device comprises automatic sub-synchronous device, be connected on the circuit of isolating switch both sides two voltage transformer (VT) and the same period table, the output that is connected on two voltage transformer (VT) on the circuit of isolating switch both sides connects the automatic sub-synchronous device input, show to connect the output of two voltage transformer (VT) on the circuit of isolating switch both sides the described same period, and automatic sub-synchronous device connects breaker control circuit.
The three-phase transformer of its relay protection experimental equipment (II) adopts triangle/star to connect transformer, and its star connects side neutral ground.
Described two transmission line simulation that returns comprises that every circuit that is serially connected with a load reactance mutually constitutes with every circuit that is serially connected with three load reactance mutually, the end of incoming cables of every circuit and leading-out terminal all are connected to an isolating switch, on the phase line of described every circuit that is serially connected with three load reactance mutually by the normally open contact of the A.C. contactor ground connection of connecting with a single-phase earthing current-limiting resistance, normally open contact by another A.C. contactor between two phase lines of described every circuit that is serially connected with three load reactance mutually is connected with the phase fault current-limiting resistance, and the normally open contact by the 3rd A.C. contactor between every two-phase of described every circuit that is serially connected with three load reactance mutually is connected with the phase fault current-limiting resistance.
The mode that the short circuit simulated experiment of its relay protection experimental equipment (II) adopts the A.C. contactor main contact to connect with the high-power small resistor of short circuit current limitation realizes.
The monitoring daemon software of its microcomputer online monitoring system (III) adopts the CBZ-8000 electric substation automation system software of being permitted relay, and this supervisory system may operate on any hardware platform of supporting WindowsNT/2000 operating system.
Compared with prior art, the utlity model has following advantage: by the improvement to existing equipment, the neutral ground that has increased three-phase transformer and transformer can be simulated the operation conditions of power generator-transformer group more realistically; Increase microcomputer type protection equipment for generator, microcomputer type protection equipment for transformer, two times transmission line simulations, microcomputer type line protective devices, enriched experiment content, increased monitoring and control that the microcomputer online monitoring system has made things convenient for the backstage.
Description of drawings
Fig. 1 is the annexation synoptic diagram of each several part of the present utility model;
Fig. 2 is the circuit diagram of automatic excitation adjustor of generator;
Fig. 3 is the circuit diagram of generator arrangements for speed regulation;
Fig. 4 is the connection diagram of generator synchronous device;
Fig. 5 is the simulated experiment connection diagram of microcomputer type protection equipment for generator and generator characteristic experiment;
Fig. 6 is the simulated experiment connection diagram of microcomputer type protection equipment for transformer;
The simulated experiment connection diagram of the double back transmission line when Fig. 7 is microcomputer type line protective devices and the power supply of both sides power supply.
Embodiment
Annexation such as Fig. 1 of the each several part of Automation of Electric Systems of the present utility model and relay protection teaching experimental equipment show, Power System Automation Equipment experimental facilities I, it comprises automatic excitation adjustor of generator, the generator arrangements for speed regulation, generator synchronous device, synchronous generator, direct current motor, the input of automatic excitation adjustor of generator connects civil power, the output of automatic excitation adjustor of generator connects the field copper of synchronous generator, synchronous generator is driven by direct current motor, direct current motor armature winding is connected on the output of generator arrangements for speed regulation, and the measurement at the two ends of isolating switch output is connected into generator synchronous device on the synchronous generator outlet line; This aut.eq. experimental facilities can connect civil power by three-phase regulator separately, also can directly link to each other with relay protection experimental equipment I I; Relay protection experimental equipment I I comprises three-phase transformer, two times transmission line simulations, the microcomputer type protection equipment for generator, the microcomputer type protection equipment for transformer, the microcomputer type line protective devices, described microcomputer type protection equipment for generator signal input part is connected into synchronous generator input phase line respectively and the output phase line is measured in the output, three-phase transformer connects the output of synchronous generator, the signal input part of microcomputer type protection equipment for transformer is connected into respectively on the phase line of the phase line of former limit winding of three-phase transformer and secondary winding, the output of three-phase transformer is connected into two transmission line simulations that return by isolating switch, and the end of incoming cables of two times transmission line simulations and leading-out terminal are measured the signal input part that output is connected into the microcomputer type line protective devices; It can simulate the action situation of synchronous generator, transformer, double back transmission line relay protection under various short trouble situations; Microcomputer online monitoring system III comprises network communication equipment, the supervisory system computing machine composition of monitoring daemon software is housed, and supervisory system computer and network communication facilities is connected by standard communication; It can be monitored the running status of the each several part of whole Automation of Electric Systems and relay protection teaching experimental equipment, simultaneously each equipment is sent distant place steering order.
The circuit diagram of automatic excitation adjustor of generator shown in Figure 2, it comprises single-phase voltage regulating device, bridge rectifier circuit, the input order phase civil power of pressure regulator, the output of pressure regulator connects the input of bridge rectifier bridge, the output of bridge rectifier bridge connects the field copper of synchronous generator, and the two ends of field copper are parallel with the demagnetization circuit of a degaussing switch FMK and de-excitation resistance R series connection formation; Its principle of work is: single-phase civil power (alternating current 220V) is powered to bridge rectifier circuit by the single-phase voltage regulating device after transformer isolation, the field copper that the Rectified alternating current of the output of single phase bridge type rectifier circu is pressed to synchronous generator provides the pulsating direct current electric current, can change the exciting current of synchronous generator by the voltage of manual adjustment pressure regulator, thereby change the machine end output voltage of synchronous generator, the field coil of synchronous generator connects de-excitation resistance (Zinc-oxide piezoresistor) by degaussing switch, be connected to the voltage table of measuring single phase bridge type rectifier circu output voltage and exciting current in the energized circuit, reometer, connect alternating current behind the set end voltage process current transformer TA1-3 of synchronous generator and the voltage transformer (VT) TV1-3, alternating voltage, reactive power, active power, frequency meter meter, DL1 are represented the generator outlet isolating switch.
Fig. 3 is the arrangements for speed regulation circuit diagram of synchronous generator, the input that comprises three-phase transformer TC1, three-phase controllable silicon fully controlled bridge rectifier, smoothing reactor L, direct current motor M, three-phase transformer TC1 connects the three-phase mains, the output of three-phase transformer TC1 is connected into three-phase controllable silicon fully controlled bridge rectifier, the output of three-phase controllable silicon fully controlled bridge rectifier connects the armature winding of direct current motor M by smoothing reactor L, and the output of direct current motor drives synchronous generator; Its principle of work is: power to three-phase full-controlled rectifier bridge behind three-phase mains (380V interchange) process three-phase transformer TC1, the triggering of the thyristor of three-phase full-controlled rectifier bridge is by a manual control module, regulate its output voltage by changing trigger angle α, the output voltage of three-phase full-controlled rectifier bridge provides the armature supply of approximate direct current to the armature winding of direct current motor M after through a smoothing reactor L, the trigger angle that the manual adjustments control module is sent can change the armature supply of direct current motor (prime mover), thereby changes the rotating speed and the active power of output of direct current motor.
Fig. 4 is the connection diagram of generator synchronous device, comprise automatic sub-synchronous device, show the same period, current transformer TA1-3, voltage transformer (VT) TV1-3 and voltage transformer (VT) TV2-3, the input that the input of automatic sub-synchronous device and the same period are shown is connected on the circuit of the isolating switch DL1 both sides on the synchronous generator outlet line by voltage transformer (VT) respectively, the primary winding of current transformer TA1-3 is connected isolating switch DL1 near on the circuit of generator output end one side, current transformer TA1-3 secondary coil, voltage transformer (VT) TV1-3 secondary coil and voltage transformer (VT) TV2-3 secondary coil are connected to the measurement electric current, voltage, frequency, reactive power, the instrument of active power; Its principle of work is: the output voltage of synchronous generator by generator outlet isolating switch DL1 after three-phase regulator TYQ meets three-phase mains Vs, isolating switch DL1 was not in off-state before generator was incorporated into the power networks, voltage signal on the circuit of isolating switch both sides, frequency signal is input to automatic sub-synchronous device, excitation by the manual adjustments generator changes set end voltage then, the rotating speed of manual adjustments generator changes the alternator output signal frequency, make isolating switch both sides voltage and frequency in the error range of regulation, approaching zero moment automatic sub-synchronous device at the phasing degree closes a floodgate switch DL1, under manual mode, also can manually close a floodgate by observing to show the same period to carve when appropriate.
Fig. 5 is the connection diagram of microcomputer type protection equipment for generator and generator characteristic experiment, comprise synchronous generator, current transformer CT1, current transformer CT2, the microcomputer type protection equipment for generator, isolating switch DL1, current transformer CT1, current transformer CT2 is located at the wherein two ends of a phase winding of synchronous motor respectively, the output of their Secondary Winding connects the corresponding signal input part of microcomputer type protection equipment for generator, an output phase line of synchronous generator is by the normally open contact ground connection of A.C. contactor CJ1, be serially connected with normally open contact and a phase fault current-limiting resistance XL2 of A.C. contactor CJ2 between two output phase lines of synchronous generator, the isolating switch outlet side phase line on the moving open contact that is connected to by isolating switch K1 be connected to the star-like pull-up resistor that constitutes by resistance XL3～resistance XL8, the load of every phase is made of two pull-up resistor series connection, be parallel with the normally open contact of A.C. contactor CJ3 on one of them pull-up resistor in each phase load respectively, the normally open contact of A.C. contactor CJ4, the normally open contact of A.C. contactor CJ5; Its principle of work is: the current signal of current transformer CT1 and CT2 output is admitted to the synchronous generator microcomputer protecting device; be used for the differential protection and the overcurrent protection of synchronous generator; the contact CJ1 of A.C. contactor and CJ2 are used to simulate the single-phase earthing and the phase fault of generator outlet; XL2 is the phase fault current-limiting resistance; K1 is the switch that carries out the generator loading characteristic test; XL3～XL7 is the load reactance device of synchronous generator; CJ3～CJ5 is the A.C. contactor normally opened contact of switching generator loading, and this part can realize the no-load characteristic of synchronous generator; load characteristic; the threephase load imbalance; the single-phase earthing of experiment of operation characteristics such as synchronous generator overload and synchronous generator; phase fault; the loss of excitation of generator; protection such as the inverse probability operation of generator simulated experiment.
Fig. 6 is the connection diagram of microcomputer type protection equipment for transformer; comprise three-phase transformer; current transformer CT3; current transformer CT4; current transformer CT5; isolating switch DL2; A.C. contactor CJ6; A.C. contactor CJ7; the microcomputer type protection equipment for transformer; current transformer CT3; current transformer CT4 is located at the input side and the outgoing side of three-phase transformer respectively; the output of their Secondary Winding is connected into the corresponding signal input part of microcomputer type protection equipment for transformer respectively; the winding of current transformer CT5 is located on the circuit of neutral ground of three-phase transformer; the output of its Secondary Winding also inserts the corresponding signal input part of microcomputer type protection equipment for transformer; the normally open contact that click-through on the phase line of three-phase transformer the is crossed A.C. contactor CJ6 ground connection of connecting with single-phase earthing current-limiting resistance XL10; article two, be connected to normally open contact and the phase fault current-limiting resistance XL11 of A.C. contactor CJ7 between the phase line; the output of three-phase transformer connects the three-phase mains by isolating switch DL2; its principle of work is: current transformer CT3; the current signal of CT4 and CT5 output is admitted to the transformer microcomputer protection device; the differential protection that is used for transformer; overcurrent protection and zero sequence overcurrent protection; the contact CJ6 of A.C. contactor and CJ7 are used for the single-phase earthing and the phase fault of analogue transformer load side; XL10 is a transformer single-line to ground fault current-limiting resistance; XL11 is a transformer phase fault current-limiting resistance; this circuit can carry out the phase fault of transformer; the ground short circuit fault; high and low pressure side negative phase-sequence overcurrent; the simulation of the overload experiment of TV broken string and transformer, TV3-3 is for measuring the voltage transformer (VT) of bus three-phase voltage.
The simulated experiment connection diagram of the double back transmission line when Fig. 7 is microcomputer type line protective devices and the power supply of both sides power supply; comprise isolating switch DL3～isolating switch DL7; the computer line protective device; three-phase regulator TYQ; the turnover line two ends of double back transmission line all are provided with the computer line protective device; the outlet side of its end of incoming cables and isolating switch DL2 joins; its leading-out terminal inserts civil power by the normally open contact and the three-phase regulator TYQ of isolating switch; end of incoming cables on the three-phase phase line of a circuit wherein; leading-out terminal is connected to the normally open contact of isolating switch DL5 respectively; the normally open contact of isolating switch DL6; be serially connected with load reactance XL26～load reactance XL28 respectively between these two isolating switch normally open contacts; end of incoming cables on the three-phase phase line of another circuit and leading-out terminal are connected to the normally open contact of isolating switch DL3 respectively; the normally open contact of isolating switch DL4; connect respectively by line load reactance XL17 between these two isolating switch normally open contacts; load reactance XL20; the branch road that load reactance XL23 series connection constitutes; by line load reactance XL18; load reactance XL21; the branch road that load reactance XL24 series connection constitutes; by line load reactance XL19; load reactance XL22; the branch road that load reactance XL25 series connection constitutes; normally open contact by an A.C. contactor CJ11 on the phase line of the second circuit ground connection of connecting with a single-phase earthing current-limiting resistance R2; normally open contact by another A.C. contactor between two phase lines of described every circuit that is serially connected with three load reactance mutually is connected with the phase fault current-limiting resistance, and the normally open contact by the 3rd A.C. contactor between every two-phase of described every circuit that is serially connected with three load reactance mutually is connected with the phase fault current-limiting resistance.
Claims (8)
1, a kind of Automation of Electric Systems and relay protection teaching experimental equipment, it is characterized in that: it is by Power System Automation Equipment experimental facilities (I) relay protection experimental equipment (II), microcomputer online monitoring system (III) three parts are formed, described Power System Automation Equipment experimental facilities (I) comprises automatic excitation adjustor of generator, the generator arrangements for speed regulation, generator synchronous device, synchronous generator, direct current motor, the input of automatic excitation adjustor of generator connects civil power, the output of automatic excitation adjustor of generator connects the field copper of synchronous generator, the rotor of synchronous generator links with direct current motor is coaxial, the output of generator arrangements for speed regulation connects the armature winding of direct current motor, the generator synchronous device of electric measurement signal termination at isolating switch two ends on the synchronous generator outlet line; Relay protection experimental equipment (II) is by three-phase transformer, two times transmission line simulations, the microcomputer type protection equipment for generator, the microcomputer type protection equipment for transformer, the microcomputer type line protective devices are formed, synchronous generator is the two termination microcomputer type protection equipment for generator input of a phase winding wherein, the output of synchronous generator connects three-phase transformer, the former limit winding of three-phase transformer and the current measurement of secondary winding output connect the input of microcomputer type protection equipment for transformer, the output of three-phase transformer is connected into two transmission line simulations that return by isolating switch, and the end of incoming cables current measurement output of two times transmission line simulations and leading-out terminal current measurement output connect the input of microcomputer type line protective devices; Microcomputer online monitoring system (III) by network communication equipment, be equipped with the monitoring daemon software the supervisory system computing machine form, supervisory system computer and network communication facilities is connected by standard communication.
2, Automation of Electric Systems according to claim 1 and relay protection teaching experimental equipment; it is characterized in that: described automatic excitation adjustor of generator comprises single-phase voltage regulating device, bridge rectifier circuit; the input order phase civil power of pressure regulator; the output of pressure regulator connects the input of bridge rectifier bridge; the output of bridge rectifier bridge connects the field copper of synchronous generator, and the two ends of field copper are parallel with the demagnetization circuit of a degaussing switch and de-excitation resistance series connection formation.
3, Automation of Electric Systems according to claim 1 and 2 and relay protection teaching experimental equipment; it is characterized in that: described generator arrangements for speed regulation comprise three-phase transformer, three-phase controllable silicon fully controlled bridge rectifier, smoothing reactor, direct current motor; the input of three-phase transformer connects the three-phase mains; the output of three-phase transformer is connected into three-phase controllable silicon fully controlled bridge rectifier, and the output of three-phase controllable silicon fully controlled bridge rectifier connects the armature winding of direct current motor by smoothing reactor.
4, Automation of Electric Systems as claimed in claim 3 and relay protection teaching experimental equipment; it is characterized in that: described generator synchronous device comprises automatic sub-synchronous device, be connected on the circuit of isolating switch both sides two voltage transformer (VT) and the same period table; the output that is connected on two voltage transformer (VT) on the circuit of isolating switch both sides connects the automatic sub-synchronous device input; show to connect the output of two voltage transformer (VT) on the circuit of isolating switch both sides the described same period, and automatic sub-synchronous device connects breaker control circuit.
5, a kind of Automation of Electric Systems according to claim 1 and relay protection teaching experimental equipment is characterized in that, the three-phase transformer of its relay protection experimental equipment (II) adopts tri-star to connect transformer, and its star connects side neutral ground.
6; Automation of Electric Systems and relay protection teaching experimental equipment according to claim 1 or 5; it is characterized in that: described two transmission line simulations that return comprise that every circuit that is serially connected with a load reactance mutually constitutes with every circuit that is serially connected with three load reactance mutually; the end of incoming cables of every circuit and leading-out terminal all are connected to an isolating switch; on the phase line of described every circuit that is serially connected with three load reactance mutually by the normally open contact of the A.C. contactor ground connection of connecting with a single-phase earthing current-limiting resistance; normally open contact by another A.C. contactor between two phase lines of described every circuit that is serially connected with three load reactance mutually is connected with the phase fault current-limiting resistance, and the normally open contact by the 3rd A.C. contactor between every two-phase of described every circuit that is serially connected with three load reactance mutually is connected with the phase fault current-limiting resistance.
7, a kind of Automation of Electric Systems according to claim 6 and relay protection teaching experimental equipment is characterized in that: the mode that the short circuit simulated experiment of its relay protection experimental equipment (II) adopts the A.C. contactor main contact to connect with the high-power small resistor of short circuit current limitation realizes.
8, a kind of Automation of Electric Systems according to claim 1 and relay protection teaching experimental equipment; it is characterized in that: the monitoring daemon software of its microcomputer online monitoring system (III) adopts the CBZ-8000 electric substation automation system software of being permitted relay, and this supervisory system may operate on any hardware platform of supporting WindowsNT/2000 operating system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200694991U CN201203987Y (en) | 2008-03-05 | 2008-03-05 | Experimental equipment for teaching power system automation and relay protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200694991U CN201203987Y (en) | 2008-03-05 | 2008-03-05 | Experimental equipment for teaching power system automation and relay protection |
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| CN201203987Y true CN201203987Y (en) | 2009-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200694991U Expired - Fee Related CN201203987Y (en) | 2008-03-05 | 2008-03-05 | Experimental equipment for teaching power system automation and relay protection |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024363A (en) * | 2010-12-31 | 2011-04-20 | 郑州万特电气有限公司 | Simulated training system of load breaker |
| CN102305897A (en) * | 2011-07-28 | 2012-01-04 | 山东电力集团公司莱芜供电公司 | Relay protecting exit tester |
| CN103400524A (en) * | 2013-08-05 | 2013-11-20 | 国家电网公司 | Method and system for realizing relay protection and secondary circuit debugging visualization |
| CN104794968A (en) * | 2015-05-20 | 2015-07-22 | 国家电网公司 | Low-voltage electric energy measuring, mounting and connection analyzing comprehensive practical training device |
| CN105070156A (en) * | 2015-06-10 | 2015-11-18 | 浙江求是科教设备有限公司 | Power system automation experimental device |
| CN107993540A (en) * | 2018-01-15 | 2018-05-04 | 国网北京市电力公司 | A kind of microcomputer protective relay teaching experiment system |
| CN108631265A (en) * | 2017-03-24 | 2018-10-09 | 南京南瑞继保电气有限公司 | It is a kind of that the series transformer longitudinal differential protecting equipment sentenced and method are joined based on double differential module |
| CN110400501A (en) * | 2019-07-24 | 2019-11-01 | 广东科瑞德电气科技有限公司 | A kind of relay protection teaching and training system |
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2008
- 2008-03-05 CN CNU2008200694991U patent/CN201203987Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024363A (en) * | 2010-12-31 | 2011-04-20 | 郑州万特电气有限公司 | Simulated training system of load breaker |
| CN102024363B (en) * | 2010-12-31 | 2012-08-22 | 郑州万特电气有限公司 | Simulated training system of load breaker |
| CN102305897A (en) * | 2011-07-28 | 2012-01-04 | 山东电力集团公司莱芜供电公司 | Relay protecting exit tester |
| CN102305897B (en) * | 2011-07-28 | 2013-02-06 | 山东电力集团公司莱芜供电公司 | Relay protecting exit tester |
| CN103400524A (en) * | 2013-08-05 | 2013-11-20 | 国家电网公司 | Method and system for realizing relay protection and secondary circuit debugging visualization |
| CN103400524B (en) * | 2013-08-05 | 2015-07-08 | 国家电网公司 | Method and system for realizing relay protection and secondary circuit debugging visualization |
| CN104794968A (en) * | 2015-05-20 | 2015-07-22 | 国家电网公司 | Low-voltage electric energy measuring, mounting and connection analyzing comprehensive practical training device |
| CN104794968B (en) * | 2015-05-20 | 2018-03-13 | 国家电网公司 | Low-voltage electric energy metering is installed and wiring analysis comprehensive training device |
| CN105070156A (en) * | 2015-06-10 | 2015-11-18 | 浙江求是科教设备有限公司 | Power system automation experimental device |
| CN105070156B (en) * | 2015-06-10 | 2018-04-17 | 浙江求是科教设备有限公司 | Automation of Electric Systems experimental provision |
| CN108631265A (en) * | 2017-03-24 | 2018-10-09 | 南京南瑞继保电气有限公司 | It is a kind of that the series transformer longitudinal differential protecting equipment sentenced and method are joined based on double differential module |
| CN108631265B (en) * | 2017-03-24 | 2019-08-30 | 南京南瑞继保电气有限公司 | It is a kind of that the series transformer longitudinal differential protecting equipment sentenced and method are joined based on double differential module |
| CN107993540A (en) * | 2018-01-15 | 2018-05-04 | 国网北京市电力公司 | A kind of microcomputer protective relay teaching experiment system |
| CN110400501A (en) * | 2019-07-24 | 2019-11-01 | 广东科瑞德电气科技有限公司 | A kind of relay protection teaching and training system |
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