CN204855685U - Intelligent substation secondary equipment trouble record wave system all - Google Patents

Intelligent substation secondary equipment trouble record wave system all Download PDF

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Publication number
CN204855685U
CN204855685U CN201520612915.8U CN201520612915U CN204855685U CN 204855685 U CN204855685 U CN 204855685U CN 201520612915 U CN201520612915 U CN 201520612915U CN 204855685 U CN204855685 U CN 204855685U
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input
mutual inductor
signal
merge cells
fault
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CN201520612915.8U
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薛占钰
毕根平
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BAODING YUXIN ELECTRICAL TECHNOLOGY Co Ltd
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BAODING YUXIN ELECTRICAL TECHNOLOGY Co Ltd
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Abstract

The utility model discloses an intelligent substation secondary equipment trouble record wave system all, including the mutual -inductor, the mutual -inductor links to each other with merging cells, and the switch switch links to each other with intelligent terminal, and merging cells, intelligent terminal link to each other with protective apparatus, and simultaneously, mutual -inductor, merging cells, intelligent terminal and switch are equallyd divide and is do not linked to each other with fault oscillograph. This system can be better record power system operation's truth, more be favorable to to protective apparatus whether correctly the action make scientific judgement.

Description

A kind of secondary equipment of intelligent converting station fault recording system
Technical field
The utility model relates to intelligent substation field, in particular to a kind of secondary equipment of intelligent converting station fault recording system.
Background technology
Transformer station is voltage of transformation in electric system, acceptance and distribution electric energy, the flow direction of control electric power and the electric power facility of adjustment voltage, and it is got up by the grid contact of transformer by each step voltage.The safe operation of transformer station, be unable to do without protective relaying device.When the force device (as generator, circuit etc.) in electric system or electric system itself there occurs fault jeopardize safe operation of power system time; protective relaying device can send warning signal in time to operator, or sends trip signal to stop the development of these events directly to controlled isolating switch.Protective relaying device has controlled response by threshold value, and only having under normal circumstances just can action when related electric amount reaches certain threshold value.If reach threshold value and there is no action; being exactly so-called " tripping ", if do not reach threshold value and carried out action, is exactly so-called " malfunction "; " tripping " and " malfunction " is all the faults itself of protective relaying device, should bear corresponding responsibility by supplier.But assert " tripping " and " malfunction ", need reproducing circuit system cloud gray model related electric amount at that time, this work is completed by fault oscillograph.Fault oscillograph is used for electric system; can when system jam; automatically, the situation of change of the various electric parameters of the forward and backward process of record trouble exactly; by these electric quantitative analyses, compare, to analyzing and processing accident, judge to protect whether correct operation, improve the equal important role of safe operation of power system level.At present; in intelligent substation, the signals collecting of fault oscillograph is completed by optical cable; but sampled point is identical with the sampled point of proterctive equipment; all take from merge cells; but when merge cells goes wrong; fault oscillograph namely cannot the truth of accurate recording Operation of Electric Systems, because merge cells and proterctive equipment generally provide by same supplier, is equivalent to the limitation of liability reducing supplier like this.
Utility model content
The purpose of this utility model is to provide a kind of secondary equipment of intelligent converting station fault recording system, and this system can the truth of better record electricity system cloud gray model, is more conducive to proterctive equipment whether correct operation makes science judgment.
For achieving the above object, the utility model takes following technical scheme:
A kind of secondary equipment of intelligent converting station fault recording system; comprise mutual inductor; mutual inductor is connected with merge cells; chopper switch is connected with intelligent terminal; merge cells, intelligent terminal are connected with proterctive equipment; it is characterized in that, described mutual inductor, merge cells, intelligent terminal are connected with fault oscillograph respectively with chopper switch.
Described mutual inductor is current transformer and/or voltage transformer (VT).
Preferably, described mutual inductor is electric signal mutual inductor, electric signal mutual inductor is connected with the input end of fault oscillograph with the input end of described merge cells respectively by cable, the output terminal of merge cells is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the first optical branching device respectively by optical cable, the output terminal of described intelligent terminal is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the second optical branching device respectively by optical cable, the input end of described intelligent terminal and the input end of fault oscillograph are parallel to the contact of described chopper switch.
Further, described electric signal mutual inductor is quiescent current mutual inductor and/or electrical signal voltage mutual inductor, the input end of described merge cells and the input end of fault oscillograph are in series and are connected to quiescent current mutual inductor, and the input end of merge cells and the input end of fault oscillograph are in parallel and are connected to electrical signal voltage mutual inductor.
Or it is preferred, described mutual inductor is light signal mutual inductor, light signal mutual inductor is connected with the input end of fault oscillograph with the input end of described merge cells through the first optical branching device respectively by optical cable, the output terminal of merge cells is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the second optical branching device respectively by optical cable, the output terminal of described intelligent terminal is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the 3rd optical branching device respectively by optical cable, the input end of described intelligent terminal and the input end of fault oscillograph are parallel to the contact of described chopper switch.
Further, described light signal mutual inductor is optical signal current mutual inductor and/or photo signal voltage mutual inductor.
In order to can to abnormal conditions and alarm, described fault oscillograph is provided with alarm module or is connected with warning device, this alarm module or warning device whether consistent with the signal from merge cells for the signal compared from mutual inductor, and whether consistent with the signal from chopper switch for the signal compared from intelligent terminal.
In technique scheme, fault oscillograph records the situation of mutual inductor and merge cells, chopper switch and intelligent terminal simultaneously, and the data of collection are more comprehensively credible, and can not cause because of the fault of merge cells cannot the ruuning situation of accurate recording electric system.The technical program achieves wiring respectively for electric signal and optical signal current mutual inductor and voltage transformer (VT) two kinds of situations, ensure that the accuracy obtaining signal.Meanwhile, the utility model sets up alarm module or warning device, can make warning in time to abnormal conditions, has record ripple and warning function concurrently, uses more convenient and smart.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model uses electric signal mutual inductor;
Fig. 2 is the structural representation that the utility model uses light signal mutual inductor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
This secondary equipment of intelligent converting station fault recording system, comprise mutual inductor, mutual inductor is divided into electric signal mutual inductor and light signal mutual inductor two kinds, electric signal mutual inductor externally sends electric signal, light signal mutual inductor externally sends light signal, the form difference because the two signals, the wiring means adopted are also different, but in general, mutual inductor is connected with merge cells, chopper switch is connected with intelligent terminal, merge cells, intelligent terminal is connected with proterctive equipment, simultaneously, mutual inductor, merge cells, intelligent terminal is connected with fault oscillograph respectively with chopper switch.Such guarantee fault oscillograph can gather the service data of mutual inductor, merge cells, intelligent terminal and chopper switch respectively, is that data are more comprehensively credible, and is convenient to compare.
Figure 1 shows that the situation using electric signal mutual inductor, electric signal mutual inductor comprises quiescent current mutual inductor and electrical signal voltage mutual inductor, generally adopts this two kinds of mutual inductors in intelligent substation simultaneously.Quiescent current mutual inductor and electrical signal voltage mutual inductor and primary equipment carry out induction and obtain voltage and current signal, then send as electronic signals.To quiescent current mutual inductor, the input end of merge cells is connected with quiescent current mutual inductor after connecting with the input end of fault oscillograph, to electrical signal voltage mutual inductor, the input end of merge cells is connected with electrical signal voltage mutual inductor with after the input end parallel connection of fault oscillograph.Then the output terminal of merge cells is connected with the input end of fault oscillograph with the input end of proterctive equipment by optical cable through the first optical branching device, and such fault oscillograph can gather route and the outlet signal of merge cells simultaneously.The output terminal of intelligent terminal is connected with the input end of fault oscillograph with the input end of proterctive equipment by optical cable respectively through the second optical branching device; the input end of intelligent terminal and the input end of fault oscillograph are parallel to the contact of chopper switch, and such fault oscillograph can gather the signal of intelligent terminal and chopper switch simultaneously.What those skilled in the art should understand that is, fault oscillograph has multiple input end, mutual inductor, merge cells, intelligent terminal and chopper switch should be connected on the different input end of fault oscillograph respectively, for a transformer station, because have multiple mutual inductor, merge cells, intelligent terminal and chopper switch, these equipment with the fault oscillograph of a multichannel, also also can realize above-mentioned functions with some fault oscillographs.In an embodiment of the present utility model, fault oscillograph be equipped with alarm module or be connected with warning device, alarm module or warning device compare signal from quiescent current mutual inductor and electrical signal voltage mutual inductor with whether consistent from merge cells signal, and can report to the police under prescribed conditions, whether the signal simultaneously also compared from intelligent terminal is consistent with the signal from chopper switch, and can report to the police under prescribed conditions.
Figure 2 shows that the situation using light signal mutual inductor, light signal mutual inductor comprises optical signal current mutual inductor and photo signal voltage mutual inductor.Intelligent substation generally adopts this two kinds of mutual inductors simultaneously.Optical signal current mutual inductor and photo signal voltage mutual inductor and primary equipment carry out induction and obtain voltage and current signal, then send with the form of light signal.Light signal mutual inductor is connected with the input end of fault oscillograph with the input end of merge cells through the first optical branching device respectively by optical cable; the output terminal of merge cells is connected with the input end of fault oscillograph with the input end of proterctive equipment through the second optical branching device respectively by optical cable, and such fault oscillograph can gather route and the outlet signal of merge cells simultaneously.The output terminal of intelligent terminal is connected with the input end of fault oscillograph with the input end of proterctive equipment through the 3rd optical branching device respectively by optical cable, and the input end of intelligent terminal and the input end of fault oscillograph are parallel to the contact of chopper switch.What those skilled in the art should understand that is, fault oscillograph has multiple input end, mutual inductor, merge cells, intelligent terminal and chopper switch should be connected on the different input end of fault oscillograph respectively, for a transformer station, because have multiple mutual inductor, merge cells, intelligent terminal and chopper switch, these equipment with the fault oscillograph of a multichannel, also also can realize above-mentioned functions with some fault oscillographs.In another embodiment of the present utility model, fault oscillograph be equipped with alarm module or be connected with warning device, alarm module or warning device compare signal from light signal mutual inductor with whether consistent from merge cells signal, and can report to the police under prescribed conditions, whether the signal simultaneously also compared from intelligent terminal is consistent with the signal from chopper switch, and can report to the police under prescribed conditions.
The present embodiment just to the utility model design and explanations realizing, is not limited, and under the utility model design, the technical scheme converted without essence is still in protection domain.

Claims (7)

1. a secondary equipment of intelligent converting station fault recording system; comprise mutual inductor; mutual inductor is connected with merge cells; chopper switch is connected with intelligent terminal; merge cells, intelligent terminal are connected with proterctive equipment; it is characterized in that, described mutual inductor, merge cells, intelligent terminal are connected with fault oscillograph respectively with chopper switch.
2. secondary equipment of intelligent converting station fault recording system as claimed in claim 1, it is characterized in that, described mutual inductor is current transformer and/or voltage transformer (VT).
3. secondary equipment of intelligent converting station fault recording system as claimed in claim 1, it is characterized in that, described mutual inductor is electric signal mutual inductor, electric signal mutual inductor is connected with the input end of fault oscillograph with the input end of described merge cells respectively by cable, the output terminal of merge cells is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the first optical branching device respectively by optical cable, the output terminal of described intelligent terminal is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the second optical branching device respectively by optical cable, the input end of described intelligent terminal and the input end of fault oscillograph are parallel to the contact of described chopper switch.
4. secondary equipment of intelligent converting station fault recording system as claimed in claim 3, it is characterized in that, described electric signal mutual inductor is quiescent current mutual inductor and/or electrical signal voltage mutual inductor, the input end of described merge cells and the input end of fault oscillograph are in series and are connected to quiescent current mutual inductor, and the input end of merge cells and the input end of fault oscillograph are in parallel and are connected to electrical signal voltage mutual inductor.
5. secondary equipment of intelligent converting station fault recording system as claimed in claim 1, it is characterized in that, described mutual inductor is light signal mutual inductor, light signal mutual inductor is connected with the input end of fault oscillograph with the input end of described merge cells through the first optical branching device respectively by optical cable, the output terminal of merge cells is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the second optical branching device respectively by optical cable, the output terminal of described intelligent terminal is connected with the input end of fault oscillograph with the input end of described proterctive equipment through the 3rd optical branching device respectively by optical cable, the input end of described intelligent terminal and the input end of fault oscillograph are parallel to the contact of described chopper switch.
6. secondary equipment of intelligent converting station fault recording system as claimed in claim 5, it is characterized in that, described light signal mutual inductor is optical signal current mutual inductor and/or photo signal voltage mutual inductor.
7. the secondary equipment of intelligent converting station fault recording system according to any one of claim 1 to 6, it is characterized in that, described fault oscillograph is provided with alarm module or is connected with warning device, this alarm module or warning device whether consistent with the signal from merge cells for the signal compared from mutual inductor, and whether consistent with the signal from chopper switch for the signal compared from intelligent terminal.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111025048A (en) * 2019-11-25 2020-04-17 深圳供电局有限公司 Automatic comparison system based on protection device operation data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111025048A (en) * 2019-11-25 2020-04-17 深圳供电局有限公司 Automatic comparison system based on protection device operation data

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