CN210156741U - Power supply guarantee system of high-voltage switch cabinet - Google Patents
Power supply guarantee system of high-voltage switch cabinet Download PDFInfo
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- CN210156741U CN210156741U CN201921024195.8U CN201921024195U CN210156741U CN 210156741 U CN210156741 U CN 210156741U CN 201921024195 U CN201921024195 U CN 201921024195U CN 210156741 U CN210156741 U CN 210156741U
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Abstract
The utility model discloses a high tension switchgear power supply support system, the incoming line cabinet includes incoming line voltage transformer, incoming line current transformer and first circuit breaker module, incoming line voltage transformer, incoming line current transformer and first circuit breaker module connect gradually, first circuit breaker module is connected with the measurement cabinet through the high-voltage bus bar, the outgoing line cabinet includes second circuit breaker module, outgoing line current transformer and second zero sequence current transformer, second circuit breaker module, outgoing line current transformer and second zero sequence current transformer connect gradually, second circuit breaker module is connected with the measurement cabinet through the high-voltage bus bar, second zero sequence current transformer, transformer and UPS connect gradually, the input of manual converter can select to connect to the secondary side of incoming line voltage transformer or the output side of UPS, the output of manual converter is connected with the relay protector, first circuit breaker module and second circuit breaker module are controlled by the relay protector, the power supply can be recovered without a generator, and the operation is simple, convenient and quick.
Description
Technical Field
The utility model relates to a power equipment field, in particular to high tension switchgear power guarantee system.
Background
After power failure of the high-voltage switch cabinet, in order to maintain electric operation and relay protection, a UPS or a direct-current screen is often required to be configured; the UPS is relatively cheap, so the UPS is popular in the market; however, if the power failure time exceeds the time that the UPS can supply power, the circuit breaker cannot automatically reclose when the mains supply is powered on; because a low-capacity voltage transformer is generally used in a high-voltage switch cabinet in view of cost, but the low-capacity voltage transformer cannot be used for long time for electric operation, relay protection and UPS power supply, the UPS power supply is supplied from the low-voltage side of the transformer through an air switch; therefore, even if the mains supply is powered on, the low-voltage side of the transformer is not electrified, so that the UPS cannot supply power, the circuit breaker cannot be automatically reclosed, the UPS can be recovered to supply power only by charging the UPS with the generator, and inconvenience is brought to operation and maintenance and power supply service.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a high tension switchgear power guarantee system, need not just can resume the power supply from taking the generator certainly, reduced the time of resuming the power supply, easy and simple to handle is swift again.
The utility model provides a technical scheme that its problem adopted is:
the utility model provides a high tension switchgear power supply support system, including primary equipment and secondary equipment, primary equipment includes inlet wire cabinet, measurement cabinet, outlet wire cabinet, transformer and high-voltage bus bar, secondary equipment includes UPS, manual converter, relay protector, the inlet wire cabinet includes inlet wire voltage transformer, inlet wire current transformer and first circuit breaker module, inlet wire voltage transformer, inlet wire current transformer and first circuit breaker module connect gradually, first circuit breaker module pass through the high-voltage bus bar with the measurement cabinet is connected, the outlet wire cabinet includes second circuit breaker module, outlet wire current transformer and second zero sequence current transformer, second circuit breaker module, outlet wire current transformer and the second zero sequence current transformer connect gradually, the second circuit breaker module pass through the high-voltage bus bar with the measurement cabinet is connected, the second zero sequence current transformer the transformer with the UPS connects gradually, the input of manual converter can select connect in inlet wire voltage transformer's secondary side perhaps the output side of UPS, the output of manual converter with relay protection connects, first circuit breaker module with second circuit breaker module is controlled by relay protection.
Further, the relay protector comprises a circuit comprehensive protection unit, a protection switching-on unit, a manual switching-off unit and a protection tripping unit.
Further, the first circuit breaker module and the second circuit breaker module comprise a vacuum circuit breaker opening and closing unit, and a power supply of the vacuum circuit breaker opening and closing unit is provided by a closing bus.
Further, the incoming line cabinet further comprises a first zero sequence current transformer, a first live-line display and an arrester, and the first zero sequence current transformer, the first live-line display and the arrester are all connected with the incoming line current transformer.
Furthermore, the measurement cabinet includes measurement voltage transformer and measurement current transformer, measurement voltage transformer with measurement current transformer connects, measurement voltage transformer's input with measurement current transformer all with female the arranging connection of high pressure.
Furthermore, the outgoing line cabinet comprises a grounding switch and a second electrified display, and the grounding switch and the second electrified display are connected with the outgoing line current transformer.
Further, the UPS further comprises a miniature circuit breaker, and the miniature circuit breaker is connected between the UPS and the transformer.
The utility model provides an embodiment has following beneficial effect: the high-voltage switch cabinet consists of primary equipment and secondary equipment, and the secondary equipment can realize control processing on the primary equipment; the incoming line voltage transformer in the incoming line cabinet is used for incoming line voltage measurement and for judging whether the spare power automatic switching device has voltage or not, the incoming line current transformer is used for incoming line current measurement, the first circuit breaker module is mainly used for switching on or switching off a circuit and has various protection functions such as overload protection, open circuit protection and undervoltage protection; the metering cabinet is mainly used for metering voltage and current; the second circuit breaker module in the outgoing line cabinet is mainly used for switching on or switching off a load circuit, the outgoing line current transformer can be used for relay protection, and the second zero sequence current transformer can realize protection and monitoring functions; the UPS can provide power for the relay protector, the relay protector can carry out overall monitoring on the high-voltage cabinet, and a fault circuit can be immediately cut off when abnormality is found; when the power failure time length exceeds the power supply time length of the UPS, the electric energy of the UPS is consumed, and after the power failure occurs again, the original relay protector, the first breaker module and the second breaker module are converted from the UPS power supply to the incoming line voltage transformer power supply by using the manual converter; when commercial power is available, the incoming line voltage transformer is electrified, the relay protector, the first breaker module and the second breaker module are electrified, the relay protector controls the first breaker module and the second breaker module to be switched on again, so that normal power supply of the whole loop is ensured, and the incoming line voltage transformer cannot be burnt out due to the fact that the first breaker module and the second breaker module are automatically switched on again only within a few seconds; when the power supply is normal, the manual converter is controlled, the power supply sources of the relay protector, the first breaker module and the second breaker module are switched to the UPS again, and the operation is simple, convenient and quick; the operation and maintenance personnel can recover the power supply without carrying a generator, so that the time for recovering the power supply is greatly reduced, and the operation and maintenance are more convenient and efficient; and only need utilize manual converter, just can realize quick control, simple and practical, and practice thrift the cost.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is a primary circuit schematic diagram of a power supply safeguard system of a high-voltage switch cabinet provided by an embodiment of the present invention;
fig. 2 is a schematic diagram of a switching control secondary circuit of a power supply support system of a high-voltage switch cabinet according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a secondary circuit of a power supply support system of a high voltage switch cabinet provided by an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It should be noted that, if there is no conflict, various features in the embodiments of the present invention may be combined with each other, and all of them are within the scope of the present invention. Additionally, while functional block divisions are performed in apparatus schematics, with logical sequences shown in flowcharts, in some cases, steps shown or described may be performed in sequences other than block divisions in apparatus or flowcharts.
After power failure of the high-voltage switch cabinet, in order to maintain electric operation and relay protection, a UPS or a direct-current screen is often required to be configured; the UPS is relatively cheap, so the UPS is popular in the market; however, if the power failure time exceeds the time that the UPS can supply power, the circuit breaker cannot automatically reclose when the mains supply is powered on; because a low-capacity voltage transformer is generally used in a high-voltage switch cabinet in view of cost, but the low-capacity voltage transformer cannot be used for long time for electric operation, relay protection and UPS power supply, the UPS power supply is supplied from the low-voltage side of the transformer through an air switch; therefore, even if the mains supply is powered on, the low-voltage side of the transformer is not electrified, so that the UPS cannot supply power, the circuit breaker cannot be automatically reclosed, the UPS can be recovered to supply power only by charging the UPS with the generator, and inconvenience is brought to operation and maintenance and power supply service.
Based on this, the utility model provides a high tension switchgear power guarantee system need not just can resume the power supply from taking the generator certainly, has reduced the time of resuming the power supply, and is easy and simple to handle swift again.
The embodiments of the present invention will be further explained with reference to the drawings.
Referring to fig. 1-2, an embodiment of the present invention provides a power supply support system for a high voltage switch cabinet, including a primary device and a secondary device, the primary device includes an incoming line cabinet 100, a metering cabinet 200, an outgoing line cabinet 300, a transformer 400 and a high voltage bus bar 10, the secondary device includes a UPS500, a manual converter 600, a relay protector, the incoming line cabinet 100 includes an incoming line voltage transformer 130, an incoming line current transformer 140 and a first breaker module 110, the incoming line voltage transformer 130, the incoming line current transformer 140 and the first breaker module 110 are sequentially connected, the first breaker module 110 is connected to the metering cabinet 200 through the high voltage bus bar 10, the outgoing line cabinet 300 includes a second breaker module 310, an outgoing line current transformer 320 and a second zero sequence current transformer 340, the second breaker module 310, the outgoing line current transformer 320 and the second zero sequence current transformer 340 are sequentially connected, the second breaker module 310 is connected to the metering cabinet 200 through the high voltage bus bar 10, the second zero sequence current transformer 340, the transformer 400 and the UPS500 are sequentially connected, the input end of the manual converter 600 can be selectively connected to the secondary side of the incoming line voltage transformer 130 or the output side of the UPS500, the output end of the manual converter 600 is connected with the relay protector, and the first breaker module 110 and the second breaker module 310 are controlled by the relay protector. The high-voltage switch cabinet consists of primary equipment and secondary equipment, and the secondary equipment can realize control processing on the primary equipment; the incoming line voltage transformer 130 in the incoming line cabinet 100 is used for incoming line voltage measurement and for judging whether a spare power automatic switching device has voltage, the incoming line current transformer 140 is used for incoming line current measurement, and the first circuit breaker module 110 is mainly used for switching on or switching off a circuit and has various protection functions such as overload protection, open circuit protection, undervoltage protection and the like; the metering cabinet 200 is mainly used for metering voltage and current; the second breaker module 310 in the outgoing line cabinet 300 is mainly used for switching on or off a load circuit, the outgoing line current transformer 320 can be used for relay protection, and the second zero sequence current transformer 340 can realize protection and monitoring functions; the transformer 400 can convert voltage to a suitable range, the UPS500 can provide power for the relay protector, the relay protector can monitor the high-voltage board as a whole, and the fault circuit can be immediately cut off when an abnormality is found; when the power failure time exceeds the time that the UPS500 can supply power, the electric energy of the UPS500 is consumed, and when the power is returned, the original relay protector, the first breaker module 110 and the second breaker module 310 are converted from the power supply of the UPS500 to the power supply of the incoming line voltage transformer 130 by using the manual converter 600; when commercial power is available, the incoming line voltage transformer 130 is also electrified, so that the relay protector, the first breaker module 110 and the second breaker module 310 are also electrified, the relay protector controls the first breaker module 110 and the second breaker module 310 to be switched on again, normal power supply of the whole loop is ensured, and the incoming line voltage transformer 130 cannot be burnt out due to the fact that the first breaker module 110 and the second breaker module 310 need to be switched on again only within seconds; when the power supply is normal, the manual converter 600 is controlled to switch the power supplies of the relay protector, the first breaker module 110 and the second breaker module 310 to the UPS500 again, so that the operation is simple, convenient and quick; the operation and maintenance personnel can recover the power supply without carrying a generator, so that the time for recovering the power supply is greatly reduced, and the operation and maintenance are more convenient and efficient; and only need utilize manual converter, just can realize quick control, simple and practical, and practice thrift the cost.
Referring to fig. 3, the relay protector includes a line integrated protection unit 1100, a protection closing unit 1200, a manual closing unit 1300, a manual opening unit 1400, and a protection trip unit 1500. The line comprehensive protection unit 1100 is connected in a circuit, and plays a role in protecting abnormal conditions in the circuit, such as short circuit, open phase and the like, so that the circuit can normally operate; the protection switching-on unit 1200 plays a role in protecting a reclosing switch, and the power consumption requirement of a user is ensured; the protection trip unit 1500 is used to open the fault loop so that the rest of the circuit can continue to operate normally; the manual switching-on unit 1300 is mainly used for a maintainer to switch on a circuit, and the manual switching-off unit 1400 is mainly used for the maintainer to switch off the circuit.
Further, the first circuit breaker module 110 and the second circuit breaker module 310 include a vacuum circuit breaker opening and closing unit 2000, and power of the vacuum circuit breaker opening and closing unit 2000 is provided by a closing bus. The power supply of the vacuum circuit breaker opening and closing unit 2000 is provided by the closing bus, so that the vacuum circuit breaker opening and closing unit 2000 can be powered by the closing bus, and the vacuum circuit breaker opening and closing unit 2000 can perform on-off or off-off processing on a circuit.
The incoming line cabinet 100 further includes a first zero sequence current transformer 120, a first live display 160, and an arrester 150, and the first zero sequence current transformer 120, the first live display 160, and the arrester 150 are all connected to the incoming line current transformer 140. The first zero sequence current transformer 120 can achieve protection and monitoring functions; the first live display 160 can be illuminated when powered on, giving more intuitive display to maintenance personnel; the lightning arrester 150 can protect the high-voltage switch cabinet from being struck by lightning, so that the high-voltage switch cabinet can operate more safely.
The metering cabinet 200 comprises a metering voltage transformer 210 and a metering current transformer 220, the metering voltage transformer 210 is connected with the metering current transformer 220, and the input end of the metering voltage transformer 210 and the metering current transformer 220 are both connected with the high-voltage busbar 10. The metering voltage transformer 210 and the metering current transformer 220 are capable of providing a voltage amount and an electric current amount to the electric energy meter, respectively.
The outlet cabinet 300 includes a grounding switch 330 and a second live display 350, and both the grounding switch 330 and the second live display 350 are connected to the outlet current transformer 320. The grounding knife switch 330 is mainly used for ensuring the personal safety of maintainers on a circuit as much as possible when misoperation occurs. The second powered display 350 also gives maintenance personnel a more intuitive display.
Further, a micro breaker 510 is further included, and the micro breaker 510 is connected between the UPS500 and the transformer 400. The micro breaker 510 is connected between the UPS500 and the transformer 400, so that damage to the UPS500 due to excessive current of the transformer 400 can be prevented, and the circuit operation is safer.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention defined by the appended claims.
Claims (7)
1. The utility model provides a high tension switchgear power guarantee system which characterized in that: including primary equipment and secondary equipment, primary equipment includes that inlet wire cabinet (100), measurement cabinet (200), outlet wire cabinet (300), transformer (400) and high pressure are female arranges (10), secondary equipment includes UPS (500), manual converter (600), relay protection ware, inlet wire cabinet (100) includes inlet wire voltage transformer (130), inlet wire current transformer (140) and first circuit breaker module (110), inlet wire voltage transformer (130) inlet wire current transformer (140) with first circuit breaker module (110) connect gradually, first circuit breaker module (110) pass through female (10) of high pressure with measurement cabinet (200) are connected, outlet wire cabinet (300) include second circuit breaker module (310), outlet wire current transformer (320) and second zero sequence current transformer (340), second circuit breaker module (310) female arranging (10) with measurement cabinet (200) are connected, outlet wire cabinet (300) include second circuit breaker module (310), outlet wire current transformer (320) and second zero sequence current transformer (340), second circuit breaker module (310, The utility model discloses a UPS (500) metering cabinet, including first breaker module (310), second breaker module (310), be qualified for the next round of competitions current transformer (320) and second zero sequence current transformer (340) connect gradually, second breaker module (310) pass through female (10) of high pressure with metering cabinet (200) are connected, second zero sequence current transformer (340) transformer (400) with UPS (500) connect gradually, the input of manual converter (600) can select connect in the secondary side of inlet wire voltage transformer (130) perhaps the output side of UPS (500), the output of manual converter (600) with relay protector connects, first breaker module (110) with second breaker module (310) are controlled by relay protector.
2. The power supply safeguard system for the high-voltage switch cabinet as recited in claim 1, wherein: the relay protector comprises a line comprehensive protection unit (1100), a protection switching-on unit (1200), a manual switching-on unit (1300), a manual switching-off unit (1400) and a protection tripping unit (1500).
3. The power supply safeguard system for the high-voltage switch cabinet as recited in claim 2, wherein: the first circuit breaker module (110) and the second circuit breaker module (310) comprise a vacuum circuit breaker opening and closing unit (2000), and a power supply of the vacuum circuit breaker opening and closing unit (2000) is provided by a closing bus.
4. The power supply safeguard system for the high-voltage switch cabinet as recited in claim 1, wherein: the incoming line cabinet (100) further comprises a first zero sequence current transformer (120), a first electrified display (160) and an arrester (150), wherein the first zero sequence current transformer (120), the first electrified display (160) and the arrester (150) are all connected with the incoming line current transformer (140).
5. The power supply safeguard system for the high-voltage switch cabinet as recited in claim 1, wherein: the metering cabinet (200) comprises a metering voltage transformer (210) and a metering current transformer (220), the metering voltage transformer (210) is connected with the metering current transformer (220), and the input end of the metering voltage transformer (210) is connected with the metering current transformer (220) and connected with the high-voltage busbar (10).
6. The power supply safeguard system for the high-voltage switch cabinet as recited in claim 1, wherein: the outgoing line cabinet (300) comprises a grounding switch (330) and a second electrified display (350), wherein the grounding switch (330) and the second electrified display (350) are connected with the outgoing line current transformer (320).
7. The power supply safeguard system for the high-voltage switch cabinet as recited in claim 1, wherein: further comprising a miniature circuit breaker (510), the miniature circuit breaker (510) being connected between the UPS (500) and the transformer (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921024195.8U CN210156741U (en) | 2019-07-02 | 2019-07-02 | Power supply guarantee system of high-voltage switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921024195.8U CN210156741U (en) | 2019-07-02 | 2019-07-02 | Power supply guarantee system of high-voltage switch cabinet |
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| CN210156741U true CN210156741U (en) | 2020-03-17 |
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| CN201921024195.8U Active CN210156741U (en) | 2019-07-02 | 2019-07-02 | Power supply guarantee system of high-voltage switch cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380344A (en) * | 2019-07-02 | 2019-10-25 | 海鸿电气有限公司 | A kind of high-tension switch cabinet power supply safeguards system |
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2019
- 2019-07-02 CN CN201921024195.8U patent/CN210156741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110380344A (en) * | 2019-07-02 | 2019-10-25 | 海鸿电气有限公司 | A kind of high-tension switch cabinet power supply safeguards system |
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