CN204229714U - A kind of experimental facilities of small electrical system - Google Patents
A kind of experimental facilities of small electrical system Download PDFInfo
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- CN204229714U CN204229714U CN201420645441.2U CN201420645441U CN204229714U CN 204229714 U CN204229714 U CN 204229714U CN 201420645441 U CN201420645441 U CN 201420645441U CN 204229714 U CN204229714 U CN 204229714U
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Abstract
The utility model discloses a kind of experimental facilities of multifunctional small-size electric system, mainly comprise electricity generation system, transformer substation system, transmission system, protection system, monitoring system, reactive power compensator, the automation equipment of primary circuit auto recloser and operating power; Be characterized in: generating, power supply, distribution integration, novel structure, can allow student intuitively arrive the framework of whole electric system, understand various electrical equipment intuitively; This experimental facilities can carry out relay protection experimental, simulation generating plant generator experimental, and secondary circuit is tested, and reactive-load compensation drops into experiment, and imitating substation switch operation is tested, and removal of load is tested, automatic reclosing experiment and the experiment of electrical wiring real training.
Description
Technical field
The utility model relates to the technology of electric system automatic reclosing.
Background technology
At present, in electrical engineering field of experiment equipment, the most typical, the most basic electric real training that has is shielded, simulation generating plant, and simulation is for distribution real training screen, and relay protection training shields.But this several equipment is all the experimental facilities researched and developed for certain a branch of instruction in school, comprehensive usability is strong not, and price comparison is expensive.Internal electron integrated device is too complicated, and leaving student for, to start the space of real training smaller, and can only be used for doing simulation generator experimental, simultaneous interconnecting is tested, and expensive.In screen, simulation is the transformer station of a 10kV; although the real training space leaving student for is larger; and reasonable price; but the layout of equipment in screen, which is a second part to be difficult to allow student find out intuitively, and which is two second part; transformer station that can not be outdoor in simulating reality visually; and this equipment can only carry out experiment for electrical wiring real training, can not carry out simulation generator experimental, relay protection experimental.The and for example power automation of JBZ-4 type and relay protection training device; can be used for carrying out various relay protection experimental; but inner complicated, a lot of module is the function adopting chip to carry out analog electrical Force system, the power ratio of bearing due to circuit board comparatively; in screen, protection is sensitive not simultaneously; when carrying out experiment, once be short-circuited, will at once corresponding module be burnt; simultaneously this real training screen can not be used for other experiment, and expensive.
Retrieve through Chinese publication, do not find the scheme identical with present patent application.
Summary of the invention:
The purpose of this utility model is exactly to overcome above-mentioned deficiency, discloses a kind of novel structure, practical, can carry out the generating of various experiment, power supply, the experimental facilities of distribution integration.
The experimental facilities of small electrical system of the present utility model, comprises electricity generation system, transformer substation system, transmission system, protection system, monitoring system, reactive power compensator, the automation equipment of primary circuit auto recloser and operating power; It is characterized in that: simulation plant electricity consumption A, electricity generation system B1 are connected with step-up transformer 2 respectively; Step-up transformer 2 respectively with overhead line support towers 5, simulation 10kV transmission line of electricity 6 connects; Simulation 10kV transmission line of electricity 6 sequentially connects disconnector 8, isolating switch 9, disconnector 10, and disconnector 10 accesses load B by simulation 10kV transmission line of electricity 12; Overhead line support towers 5 is connected with step-down transformer 11 by simulation 220kV transmission line of electricity 7, step-down transformer 11 sequentially with disconnector 14, isolating switch 15, disconnector 16 connects, and disconnector 16 is connected with simulation 10kV transmission line of electricity 12 by simulation 10kV transmission line of electricity 22; Step-down transformer 11 is connected with current transformer 24 by simulation 35kV transmission line of electricity 13; Current transformer 24 sequentially connects disconnector 17, isolating switch 18, and disconnector 19 is connected with step-down transformer 21 by transmission line of electricity 20; Step-down transformer 21 is connected with load C, mimic-disconnecting switch D respectively; Disconnector 8, isolating switch 9, disconnector 10 respectively with disconnector 17, isolating switch 18, disconnector 19, current transformer 24 connect; Disconnector 14, isolating switch 15, disconnector 16 respectively with disconnector 17, isolating switch 18, disconnector 19, current transformer 24 connect.
The present invention compared with prior art its beneficial effect is: comprise electricity generation system, transformer substation system, transmission system, protection system, monitoring system, reactive power compensator, the automation equipment of primary circuit auto recloser and operating power.Its advantage is: generating, power supply, and distribution integration, novel structure, can allow student intuitively arrive the framework of whole electric system, understand various electrical equipment intuitively.This experimental facilities can carry out relay protection experimental, and simulation generating plant generator experimental, secondary circuit is tested, and reactive-load compensation drops into experiment, and imitating substation switch operation is tested, and removal of load is tested, and automatic reclosing is tested.And the experiment of electrical wiring real training.
1, novel structure, can allow student intuitively to the generator of primary circuit, step transformer, the overhead transmission line of various steel tower, isolating switch, disconnector, and the various relay protection parts of secondary circuit, the electric system very in closer to reality.
2, can kinds of experiments be carried out, leave the space that student starts for larger.
3, various electrical equipment is arranged neat clear, is convenient to replacing and the installation of device, does not need to install cabinet.
4, cost is low.
Accompanying drawing explanation
The experimental facilities floor plan schematic diagram of Fig. 1---small electrical system
Fig. 2---current quick and automatic reclosing circuit diagram
In figure: simulation plant electricity consumption A, electricity generation system B1, load B, C, mimic-disconnecting switch D, step-up transformer 2, terminal block 3, step-down transformer 4, overhead line support towers 5, simulation 10kV transmission line of electricity 6, simulation 220kV transmission line of electricity 7, disconnector 8, isolating switch 9, disconnector 10, step-down transformer 11, simulation 10kV transmission line of electricity 12, simulation 35kV transmission line of electricity 13, disconnector 14, isolating switch 15, disconnector 16, disconnector 17, isolating switch 18, disconnector 19, transmission line of electricity 20, step-down transformer 21, simulation 10kV transmission line of electricity 22, step-down transformer 23, current transformer 24, secondary circuit E, button SB2, SB2, middle contactor KM, current relay KA, contact KA1, KA2, time relay KT, voltage relay KV, circuit breaking F, hummer Q.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail, but embodiments of the present invention are not limited thereto.
As shown in Figure 1-2: simulation plant electricity consumption A, electricity generation system B1, load B, C, mimic-disconnecting switch D, step-up transformer 2, terminal block 3, step-down transformer 4, overhead line support towers 5, simulation 10kV transmission line of electricity 6, simulation 220kV transmission line of electricity 7, disconnector 8, isolating switch 9, disconnector 10, step-down transformer 11, simulation 10kV transmission line of electricity 12, simulation 35kV transmission line of electricity 13, disconnector 14, isolating switch 15, disconnector 16, disconnector 17, isolating switch 18, disconnector 19, transmission line of electricity 20, step-down transformer 21, simulation 10kV transmission line of electricity 22, step-down transformer 23, current transformer 24, secondary circuit E, button SB2, SB2, middle contactor KM, current relay KA, contact KA1, KA2, time relay KT, voltage relay KV, circuit breaking F, the parts such as hummer Q all can adopt the manufacture of prior art or buy and obtain.
As shown in Figure 1-2: the experimental facilities of small electrical system of the present utility model, comprises electricity generation system, transformer substation system, transmission system, protection system, monitoring system, reactive power compensator, the automation equipment of primary circuit auto recloser and operating power; It is characterized in that: simulation plant electricity consumption A, electricity generation system B1 are connected with step-up transformer 2 respectively; Step-up transformer 2 respectively with overhead line support towers 5, simulation 10kV transmission line of electricity 6 connects; Simulation 10kV transmission line of electricity 6 sequentially connects disconnector 8, isolating switch 9, disconnector 10, and disconnector 10 accesses load B by simulation 10kV transmission line of electricity 12; Overhead line support towers 5 is connected with step-down transformer 11 by simulation 220kV transmission line of electricity 7, step-down transformer 11 sequentially with disconnector 14, isolating switch 15, disconnector 16 connects, and disconnector 16 is connected with simulation 10kV transmission line of electricity 12 by simulation 10kV transmission line of electricity 22; Step-down transformer 11 is connected with current transformer 24 by simulation 35kV transmission line of electricity 13; Current transformer 24 sequentially connects disconnector 17, isolating switch 18, and disconnector 19 is connected with step-down transformer 21 by transmission line of electricity 20; Step-down transformer 21 is connected with load C, mimic-disconnecting switch D respectively; Disconnector 8, isolating switch 9, disconnector 10 respectively with disconnector 17, isolating switch 18, disconnector 19, current transformer 24 connect; Disconnector 14, isolating switch 15, disconnector 16 respectively with disconnector 17, isolating switch 18, disconnector 19, current transformer 24 connect.
As shown in Figure 1-2: the experimental facilities of small electrical system of the present utility model, what can adopt prior art carries out installation.
As shown in Figure 1-2: the experimental facilities of small electrical system of the present utility model, the electricity that can be sent by generator becomes 220V, the 220kV namely in analog electrical Force system after boosting.Electricity generation system is grouped into primarily of the protection portion of three phase generator and generator.Transformer substation system is grouped into primarily of the step-up transformer of each electric pressure and the protection portion of step-down transformer and transformer.Transmission system is made up of the shaft tower transmission line of electricity of each electric pressure.Protection system, monitoring system is by various relay and voltage transformer (VT), and current transformer and various signal device composition, mainly to the protection of primary circuit.Reactive power compensator forms primarily of Shunt Capacitor Unit, loss idle on main compensation transmission line of electricity, thus reduces the network loss of transmission line of electricity.Auto recloser is for break down when primary circuit and after isolating switch automatic trip, isolating switch can be passed through the time and automatic closing of adjusting.Operating power automation equipment primarily of through AC rectification direct current operative power source and can automatic charging DC operation standby power supply composition, when AC power breaks down power-off, DC operation standby power supply can come into operation automatically.
Described transmission system is made up of the steel towers null circuit of each electric pressure.
Described protection system is by various relay, and various signal device composition, time breaking down in primary circuit, can excise fault, and send corresponding trouble-signal.
Described reactive power compensator is made up of, for the reactive-load compensation to transmission line of electricity two groups of the parallel power condenser groups.
Owing to have employed above-mentioned generating, power supply, the integrated apparatus of distribution, so student can be allowed intuitively to arrive whole electric system, understands various electrical equipment intuitively.This experimental facilities can carry out relay protection experimental, and simulation generating plant generator experimental, secondary circuit is tested, and reactive-load compensation drops into experiment, and imitating substation switch operation is tested, and removal of load is tested, and automatic reclosing is tested.And the experiment of electrical wiring real training.Thus overcome the incomplete weakness of several experimental facilities function of appeal.
As shown in Figure 1: the experimental facilities of small electrical system of the present utility model, multi-functional electric system experimental facilities can be realized, it is characterized in that: send electric energy by three phase generator, there is sub-fraction electric energy use as station service after step-down transformer (4) step-down, remaining electric energy is after step-up transformer (2) boosting, simulate overhead transmission line (7) and 10kV by 220kV respectively to simulate overhead transmission line (6) and distally transmit electricity, 10kV simulates overhead transmission line has two circuits to be respectively 10kV simulation overhead transmission line (12) and 10kV simulation overhead transmission line (22), this two loop lines road is by cutout (9) and isolating switch (15) grid switching operation, switch power supply, during normal operation, only has a line powering, all the other one is extension wire, electric energy is transported at a distance and reduces to simulation 380V to user power utilization through step-down transformer (23).220kV simulates overhead transmission line (7) and becomes simulation 35kV simulation overhead transmission line (13) distally to power through step-down transformer (11) step-down, finally becomes simulation 380V to user power utilization by step-down transformer (21) step-down.
Described 220kV simulates overhead transmission line (7), is small scale iron tower transmission line of electricity, novel structure.
The three-phase transformer that described step-up transformer (2) is coiled into by three single transformers.
Described isolating switch (18), can excise short-circuit current rapidly when fault, and can through the time automatic reclosing oneself adjusted.
As shown in Figure 2: the experimental facilities of small electrical system of the present utility model; the isolating switch in primary circuit simulated by its current quick and automatic reclosing with the middle contactor KM that a dropout current is 30A, with three main contacts of its three normally opened contact mimic-disconnecting switches.Press SB2, middle contactor KM coil electricity, and the self-sustaining by its normally opened contact, namely closing circuit is connected, now when red, namely realizes primary circuit and closes a floodgate.When breaking down in primary circuit, electric current increases suddenly, current relay KA (its coil connects Current Transformer Secondary side, and this is not shown in FIG.) action, its normally closed contact KA1 or KA2 divides out, in the middle of cutting off, the electric current of contactor KM coil, namely realizes the automatic trip of primary circuit.While electric current increase is broken down in primary circuit, normally opened contact KA1 or KA2 of current relay KA closes, thus start-up time relay K T, time relay self-sustaining by the normally opened contact of oneself, now two normally opened contacts of time relay KT close, dodge green light, and send tripping alarm signal.Meanwhile, by after time of adjusting, its time closing contact KT closes, thus the wire loop of starting contactor KM, namely realize the automatic reclosing of primary circuit, on the other hand by its time delay separate contacts KT separately, cut off the loop of KT coil.If fault is instantaneity, then close a floodgate successfully.Voltage relay KV is as the use of operation circuit disconnection monitoring, and when operation circuit breaks, two normally closed contact closes, and lights alarm window " operation circuit broken string ", and sends operation circuit breaking signal.When primary circuit combined floodgate runs, press SB1, can closing circuit be cut off, realize manual brake separating, now give a green light.
As shown in Figure 1-2: the experimental facilities of small electrical system of the present utility model, primary circuit: 2 is step-up transformer 11), 21, 23 is step-down transformer, 7, 6, 13, 22, 20, 12 is transmission line of electricity 21, 25, 26, 9, 15, 18 is isolating switch, when circuit 7 breaks down, isolating switch 21 trips, when circuit 13 breaks down, the electric current now flowing through isolating switch 21 and isolating switch 26 all reaches working value, but due to the difference of actuation time, the first action of isolating switch 26, such fault of having excised circuit 13, circuit 7 has recovered normal operation, thus ensure that the normal operation of whole electric system, same reason, when circuit 12 breaks down, the first action of isolating switch 9, when isolating switch 9 is due to mechanical fault during miss operation, then after time delay, by isolating switch 25 action.During normal operation, important load is powered by circuit 12, isolating switch 15 be disconnect, when circuit 12 break down or interruption maintenance time, then now can close isolating switch 15, now powered to important load by circuit 22.
Secondary circuit: the main isolating switch with primary circuit of secondary circuit control system, the control terminal of current transformer connects, thus control isolating switch effectively and action selectively.
Claims (1)
1. an experimental facilities for small electrical system, comprises electricity generation system, transformer substation system, transmission system, protection system, monitoring system, reactive power compensator, the automation equipment of primary circuit auto recloser and operating power; It is characterized in that: simulation plant electricity consumption (A), electricity generation system (B1) are connected with step-up transformer (2) respectively; Step-up transformer (2) respectively with overhead line support towers (5), simulation 10kV transmission line of electricity (6) connect; Simulation 10kV transmission line of electricity (6) sequentially connects disconnector (8), isolating switch (9), disconnector (10), and disconnector (10) is by simulation 10kV transmission line of electricity (12) access load (B); Overhead line support towers (5) is connected with step-down transformer (11) by simulation 220kV transmission line of electricity (7), step-down transformer (11) sequentially with disconnector (14), isolating switch (15), disconnector (16) connects, and disconnector (16) is connected with simulation 10kV transmission line of electricity (12) by simulation 10kV transmission line of electricity (22); Step-down transformer (11) is connected with current transformer (24) by simulation 35kV transmission line of electricity (13); Current transformer (24) sequentially connects disconnector (17), isolating switch (18), and disconnector (19) is connected with step-down transformer (21) by transmission line of electricity (20); Step-down transformer (21) is connected with load (C), mimic-disconnecting switch (D) respectively; Disconnector (8), isolating switch (9), disconnector (10) respectively with disconnector (17), isolating switch (18), disconnector (19), current transformer (24) connect; Disconnector (14), isolating switch (15), disconnector (16) respectively with disconnector (17), isolating switch (18), disconnector (19), current transformer (24) connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645441.2U CN204229714U (en) | 2014-10-31 | 2014-10-31 | A kind of experimental facilities of small electrical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645441.2U CN204229714U (en) | 2014-10-31 | 2014-10-31 | A kind of experimental facilities of small electrical system |
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| Publication Number | Publication Date |
|---|---|
| CN204229714U true CN204229714U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420645441.2U Expired - Fee Related CN204229714U (en) | 2014-10-31 | 2014-10-31 | A kind of experimental facilities of small electrical system |
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| Country | Link |
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| CN (1) | CN204229714U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825737A (en) * | 2016-05-31 | 2016-08-03 | 国网山东省电力公司龙口市供电公司 | Electrical power system automation simulation device |
-
2014
- 2014-10-31 CN CN201420645441.2U patent/CN204229714U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105825737A (en) * | 2016-05-31 | 2016-08-03 | 国网山东省电力公司龙口市供电公司 | Electrical power system automation simulation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20151031 |
|
| EXPY | Termination of patent right or utility model |