CN2831361Y - Phase changed capacitor compensating cabinet - Google Patents
Phase changed capacitor compensating cabinet Download PDFInfo
- Publication number
- CN2831361Y CN2831361Y CN 200520102946 CN200520102946U CN2831361Y CN 2831361 Y CN2831361 Y CN 2831361Y CN 200520102946 CN200520102946 CN 200520102946 CN 200520102946 U CN200520102946 U CN 200520102946U CN 2831361 Y CN2831361 Y CN 2831361Y
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- CN
- China
- Prior art keywords
- voltage
- switch
- transfer switch
- reactive
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a capacitance compensating cabinet for transformer substations, which comprises a main circuit and a control circuit, wherein in the main circuit, a knife switch is connected to a shunt fuse through a copper bar and a conducting wire; the shunt fuse is connected with AC contactors through conducting wires; the AC contactors are connected with a capacitor through the conducting wires, and are connected to the lower side of the knife switch; in the control circuit, the voltage of the knife switch passes through from a secondary fuse terminal to a voltage transfer switch, from the voltage transfer switch to a voltmeter, from a current mutual inductor to a current terminal, from the current terminal to an ammeter, from A-phase voltage under the knife switch to the voltage transfer switch and a normally opened contact of each of the AC contactors, from each of the AC contactors to an indicating lamp, from the indicating lamp to a zero curve, from B-phase voltage and C-phase voltage to a power factor meter, from the power factor meter to the voltage transfer switch and from the voltage transfer switch to a reactive compensator. A-phase sampling current passes through from a terminal to the reactive compensator, from each outgoing line of the reactive compensator to the voltage transfer switch and from the voltage transfer switch to a coil of each of the AC contactors. The coil is connected with the zero curve. The utility model has the advantages that the capacitance compensating cabinet for transformer substations can obviously raise power factors, reduce reactive current and power loss and raise electricity consumption quality. The utility model is particularly suitable for switching houses of community basements for the size of a cabinet body is small.
Description
Technical field
The utility model relates to a kind of compensation arrangement of box type transformer, especially a kind of case power transformation capacitance compensating cabinet.
Background technology
Case power transformation capacitance compensating cabinet is applicable to box type transformer, and present compensation cabinet size is big, is not specially adapted to the power distribution room of sub-district basement.Power factor improves less, and reactive current is bigger, and power loss is more, has influenced to use electricity quality.
The utility model content
The utility model will solve the defective of above-mentioned prior art, and a kind of power factor that significantly improves is provided, and reduces the case power transformation capacitance compensating cabinet of reactive current and reduction power loss.
The utility model solves the technical scheme that its technical problem adopts.This case power transformation capacitance compensating cabinet, circuit part comprises major loop and control loop, wherein in the major loop: knife switch is connected to shunting fuse by copper bar and lead, and fuse connects A.C. contactor by lead, and A.C. contactor connects capacitor by lead and is connected under the knife switch; In the control loop: to voltage change-over switch, change over switch is to voltmeter by the secondary fuse terminal for voltage on the knife switch; Current transformer is to current terminal to ammeter; The A phase voltage is to change over switch and each A.C. contactor normal opened contact under the knife switch, and contactor is to indicator light, again to zero line; B, C phase voltage are to power factor meter and change over switch, and to reactive-load compensator, to reactive-load compensator, each road outlet of reactive-load compensator is to change over switch, again to exchanging contactor coil, coil connecting to neutral line from terminal for A phase sampling current by change over switch.
The effect that the utility model is useful is: can significantly improve power factor, reduce reactive current, reduce power loss, improve and use electricity quality.The cabinet size is little, is specially adapted to the power distribution room of sub-district basement.
Description of drawings
Fig. 1 is a circuit catenation principle schematic diagram of the present utility model;
Reference numeral: reactive-load compensator 1, knife switch 2, current transformer 3, ammeter 4, voltmeter 5, change over switch 6, capacitor 7, A.C. contactor 8, power factor meter 9, fuse 10, lightning arrester 11.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
This case power transformation capacitance compensating cabinet circuit part comprises major loop and control loop, wherein in the major loop: knife switch 2 is connected to shunting fuse 10 by copper bar and lead, fuse 10 connects A.C. contactor 8 by lead, A.C. contactor 8 connects capacitor 7 by lead, and lightning arrester 11 is connected to knife switch 2 times.In the control loop: to voltage change-over switch 6, change over switch 6 is to voltmeter 5 by the secondary fuse terminal for voltage on the knife switch 2; Current transformer 3 is to current terminal to ammeter 4; 2 times A phase voltages of knife switch are to change over switch 6 and each A.C. contactor normal opened contact, and contactor is to indicator light, again to zero line; B, C phase voltage are to power factor meter 9 and change over switch 6, and to reactive-load compensator 1, to reactive-load compensator 1, each road outlet of reactive-load compensator is to change over switch 6, again to exchanging contactor coil, coil connecting to neutral line from terminal for A phase sampling current by change over switch 6.
One, technical parameter:
1. rated operational voltage: 380V
2. rated current: 400A
3. power factor: 0.98
4. degree of protection: IP30
Two, overall dimension:
1000mm * 600mm * 1600mm (wide * dark * height)
Three, operation principle:
By voltage change-over switch, convertible each phase voltage and each phase voltage value; Ammeter can show each phase offset current size; Power factor meter can show the power factor of compensation; The changeable 3 kinds of operator schemes of change over switch: manually, 0 and stop, switch in " automatically " position, reactive-load compensator preestablishes compensation range and obtains voltage and sampling current, variation along with sampling current, automatically control each road electric capacity of voltage switching, corresponding indicator light power on/off satisfies the demand that compensates; Switch in " 0 " position, then uncompensated; Switching in " manually " position reactive-load compensator does not work, switch in " 1 " position, 1 road capacitance compensation then, the 1# indicator light is shinny, switch in " 2 " position, then the 2 road electric capacity also compensates, and the 2# indicator light is shinny, and manual compensation that next coming in order to ten road is full up must be observed power factor meter makes it in specified compensation range.
Four, service condition:
1. the voltage ripple of power network scope is 85%～130% of a rated voltage
Ambient temperature be not higher than+40 ℃, be not less than-5 ℃, the mean temperature in 24 hours is not higher than+35 ℃
3. indoor installation, height above sea level is not higher than 2000m.
4. surrounding air relative humidity is no more than 50% when the highest, can allow relative humidity to improve when low.
5. when installing and the vertical plane gradient be no more than 5%.
Claims (2)
1, a kind of case power transformation capacitance compensating cabinet, it is characterized in that: circuit part comprises major loop and control loop, wherein in the major loop: knife switch (2) is connected to shunting fuse (10) by copper bar and lead, fuse (10) connects A.C. contactor (8) by lead, and A.C. contactor (8) connects capacitor (7) by lead; In the control loop: knife switch (2) is gone up voltage and is passed through the secondary fuse terminal to voltage change-over switch (6), and change over switch (6) is to voltmeter (5); Current transformer (3) is to current terminal to ammeter (4); The A phase voltage is to change over switch (6) and each A.C. contactor normal opened contact down for knife switch (2), and contactor is to indicator light, again to zero line; B, C phase voltage are to power factor meter (9) and change over switch (6), to reactive-load compensator (1), to reactive-load compensator (1), each road outlet of reactive-load compensator is to change over switch (6) from terminal for A phase sampling current by change over switch (6), again to exchanging contactor coil, coil connecting to neutral line.
2, case power transformation capacitance compensating cabinet according to claim 1, it is characterized in that: described lightning arrester (11) is connected under the knife switch (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520102946 CN2831361Y (en) | 2005-06-13 | 2005-06-13 | Phase changed capacitor compensating cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520102946 CN2831361Y (en) | 2005-06-13 | 2005-06-13 | Phase changed capacitor compensating cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2831361Y true CN2831361Y (en) | 2006-10-25 |
Family
ID=37136288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520102946 Expired - Lifetime CN2831361Y (en) | 2005-06-13 | 2005-06-13 | Phase changed capacitor compensating cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2831361Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767225A (en) * | 2012-05-31 | 2012-11-07 | 德清县供电局 | Automatic water-discharging device for power-distributing room |
| CN103454612A (en) * | 2013-09-03 | 2013-12-18 | 青岛艾孚科技有限公司 | Electricity meter electrifying testing device |
-
2005
- 2005-06-13 CN CN 200520102946 patent/CN2831361Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767225A (en) * | 2012-05-31 | 2012-11-07 | 德清县供电局 | Automatic water-discharging device for power-distributing room |
| CN103454612A (en) * | 2013-09-03 | 2013-12-18 | 青岛艾孚科技有限公司 | Electricity meter electrifying testing device |
| CN103454612B (en) * | 2013-09-03 | 2015-08-26 | 青岛元启工业智能技术有限公司 | A kind of ammeter electrifying test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150613 Granted publication date: 20061025 |