CN2123826U - Explosion-insulating reactive power terminal compensator - Google Patents
Explosion-insulating reactive power terminal compensator Download PDFInfo
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- CN2123826U CN2123826U CN 92223844 CN92223844U CN2123826U CN 2123826 U CN2123826 U CN 2123826U CN 92223844 CN92223844 CN 92223844 CN 92223844 U CN92223844 U CN 92223844U CN 2123826 U CN2123826 U CN 2123826U
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- compensation
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Abstract
The utility model relates to an explosion-insulating type reactive power terminal compensator mainly used for underground mines, comprising a group of compensation capacitors and the controlling switch of the utility model. The loop of each of the compensation capacitor is connected with a group of voltage-sensitive resistors and a group of harmonic absorbers in parallel used to limit the over voltage peak value of electric network underground and absorb harmonic voltage to protect the compensation capacitors; besides, a thermal relay is connected in series to carry out the overload protection for the compensation capacitors; all elements are arranged in an explosion proof casing. The utility model is mainly used for terminal reactive power compensation for electric equipment of terminal mines as well as other places with explosion danger.
Description
The utility model belongs to the reactive power compensation device of power consumption equipment, is a kind of flame-proof type reactive power terminal compensation device that is used under the mine.
At present, power system in mines, the particularly reactive power compensation of colliery electrical network all are to carry out the high pressure centralized compensation in ground electric substation, but this compensation has just improved the power factor of ground high-pressure system, and the power factor of underground electric network and load is still very low.Usually, the length of downhole cable is quite long, and power load is also bigger, and therefore, each power consumption equipment of down-hole moves under lower power factor for a long time, with increasing the loss and the voltage drop of electrical network, causes a large amount of wastes of the energy.
The purpose of this utility model is to provide a kind of flame-proof type reactive power terminal compensation device that is used for the down-hole power consumption equipment at the problem of prior art existence.
Reactive power compensation device all is to come the mode of one group of compensation condenser of switching to compensate with control switch usually.Certainly, no exception as the reactive power terminal compensation device of down-hole power consumption equipment.But with the exception of this, should be taken into account that also there is the situation of fuel gas in the down-hole; The service requirement of down-hole power consumption equipment, particularly ventilation equipment; The factors such as influence of the harmonic current that the down-hole nonlinear-load is produced.
According to above-mentioned imagination, the solution that realizes the utility model purpose is: the flame-proof type reactive power terminal compensation device that is provided comprises one group of compensation condenser and control switch thereof, in parallel respectively one group of piezo-resistance and one group of capacitance-resistance harmonic pad that forms by resistance, capacitances in series on the loop of compensation condenser, also be in series with thermal relay on the loop of compensation condenser, above-mentioned all devices all are contained in the explosion-proof casing.
The control switch of this compensator can adopt A.C. contactor, but volume is too big, so preferably adopt vacuum switch.
Piezo-resistance and rc absorber set in this compensator all shield.As previously mentioned, there are some nonlinear-loads in the down-hole, as electric locomotive used controlled rectifier supply unit etc., can produce harmonic current, forms various harmonic voltages in its impedance after injecting AC network, makes network voltage debase, and condenser loss increases.And piezo-resistance can limit the superpotential peak value of harmonic wave; Rc absorber can absorb harmonic voltage, reduces superpotential initial steepness, thereby the protection compensation condenser is not subjected to superpotential harm.
Below in conjunction with accompanying drawing content of the present utility model is illustrated.
Fig. 1 is an electrical schematic diagram of the present utility model.
Fig. 2 is overall structure figure of the present utility model.
As shown in Figure 1: this compensator matches with three phase alternating current motor 1, and it is connected in parallel on after the control switch 2 of motor 1 major loop.Compensation condenser 3 adopts dry type plated film capacitors, the throwing of this compensation condenser, cuts by vacuum switch 4 and controls.Vacuum switch 4 is connected in the control loop of compensation condenser, numbers among the figure: B---transformer, and K---control loop switch, 51---the thermal relay contact.On the loop of compensation condenser 4, be in series with thermal relay 5 and fast acting fuse 6, implement overload protection and short-circuit protection compensation condenser.Piezo-resistance 7 and be connected in parallel on after the contacts of vacuum switch 41 in compensation condenser loop by the rc absorber 8 that resistance 81, electric capacity 82 are formed.
Above-mentioned each device all is contained in the explosion-proof casing, its whole contour structures as shown in Figure 2: 10---explosion-resistant enclosure, 11---fairlead, K---control loop switch, 3---compensation condenser.4---vacuum switch, 6---fuse, B---transformer.
The utility model has the advantage of that volume is little, in light weight, mobile, easy for installation, be convenient to realize the terminal compensation to the down-hole consumer, reduced the energy loss of underground electric network, improved quality of voltage. The utility model is mainly used in the occasion under the coal mine, and also can be used for other has the dangerous environment such as fuel gas.
Claims (2)
1, a kind of flame-proof type reactive power terminal compensation device, comprise one group of compensation condenser 3 and control switch K thereof, one group of piezo-resistance 7 and one group of capacitance-resistance harmonic pad that is in series by resistance 81, electric capacity 82 have been it is characterized in that on the loop of compensation condenser 3 in parallel respectively, also be in series with thermal relay 5 on the loop of compensation condenser 3, above-mentioned all devices all are contained in the explosion-proof casing 10.
2, compensator as claimed in claim 1 is characterized in that said compensation condenser 3 adopts dry type plated film capacitor, and said control switch K adopts vacuum switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223844 CN2123826U (en) | 1992-06-01 | 1992-06-01 | Explosion-insulating reactive power terminal compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223844 CN2123826U (en) | 1992-06-01 | 1992-06-01 | Explosion-insulating reactive power terminal compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2123826U true CN2123826U (en) | 1992-12-02 |
Family
ID=4966443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92223844 Granted CN2123826U (en) | 1992-06-01 | 1992-06-01 | Explosion-insulating reactive power terminal compensator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2123826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170155253A1 (en) | 2014-06-20 | 2017-06-01 | General Electric Company | System and method of power control for an energy storage charging station |
-
1992
- 1992-06-01 CN CN 92223844 patent/CN2123826U/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170155253A1 (en) | 2014-06-20 | 2017-06-01 | General Electric Company | System and method of power control for an energy storage charging station |
| US10520966B2 (en) | 2014-06-20 | 2019-12-31 | General Electric Company | System and method of power control for an energy storage charging station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |