CN2283943Y - Uninterruption AC, DC power-supply screen for small substation electric power plant - Google Patents
Uninterruption AC, DC power-supply screen for small substation electric power plant Download PDFInfo
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- CN2283943Y CN2283943Y CN 96221083 CN96221083U CN2283943Y CN 2283943 Y CN2283943 Y CN 2283943Y CN 96221083 CN96221083 CN 96221083 CN 96221083 U CN96221083 U CN 96221083U CN 2283943 Y CN2283943 Y CN 2283943Y
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Abstract
The utility model belongs to a circuit device for power supply and power distribution. The utility model solves the defects, such as the high cost and maintenance cost, large self power consumption, long heating, existence of multiple-point hidden faults, unreliability, etc. of an existing supply panel used in a transformer substation. The utility model is composed of an uninterrupted power supply UPS continuously supplying power when an electric network fails, an auxiliary closing loop used for charging power for a capacitor when the utility model in normal operation and a voltage detection trigger pulse loop used for making the capacitor of the auxiliary closing loop discharge power towards a closing power supply when the electric network fails. The supply panel has the advantages of low cost, high safety, simple structure, convenient maintenance, etc.
Description
The utility model belongs to the circuit arrangement of power supply and distribution, and particularly compact type substation power plant shields with uninterrupted power of alterating and direct current.
Compact type substation and power plant generally use every nickel-based battery formula DC power supply or compound rectifier power source at present.Its cost and maintenance cost height, and every nickel-based battery formula rectifying power supply apparatus, owing to use traditional silicon stack or silicon chain step-down floating charge mode to move, thereby self power consumption is big, generates heat for a long time and has the multiple spot potential faults.Compound rectifier power source will lose reliable combined floodgate and control power supply when storage battery breaks down.
The purpose of this utility model is to address the above problem, and provides a kind of with low cost, safe and reliable, simple in structure, uninterrupted power of alterating and direct current screen easy to maintenance.
The purpose of this utility model is achieved in that the utility model continues the uninterrupted power supply UPS of power supply when being used for electrical network and breaking down, auxiliary switching-in loop of charging to electric capacity during normal operation the and the electric capacity that makes the auxiliary switching-in loop when electrical network breaks down are formed to the voltage detection trigger pulse circuit of power switch discharge, the input of uninterrupted power supply UPS is connected with electrical network, its output directly with plant the ripple power supply and be connected with the wireless telecommunications power supply, its output is also by being connected with signal power source with the control power supply after the transformation rectification, power switch is directly obtained after by halfwave rectifier from electrical network, electrical network is by connecting the input of auxiliary switching-in loop and voltage detection trigger pulse circuit behind the voltage transformation, the output of auxiliary switching-in loop and voltage detection trigger pulse circuit is connected power switch.
The utility model is compared every nickel-based battery formula or compound rectifier power source with existing, has advantages such as with low cost, safe and reliable, simple in structure, easy to maintenance.
Fig. 1 is a functional-block diagram of the present utility model.
Fig. 2 is the utility model principle sketch.
Below in conjunction with accompanying drawing the utility model is described in detail.
As shown in Figure 1, the utility model continues the uninterrupted power supply UPS of power supply when being used for electrical network and breaking down, auxiliary switching-in loop of charging to electric capacity during normal operation the and the electric capacity that makes the auxiliary switching-in loop when electrical network breaks down are formed to the voltage detection trigger pulse circuit of power switch discharge, uninterrupted power supply UPS input is connected with electrical network, its output directly with plant the ripple power supply and be connected with the wireless telecommunications power supply, its output is also by being connected with signal power source with the control power supply after the transformation rectification, power switch is directly obtained after by halfwave rectifier from electrical network, electrical network is by connecting the input of auxiliary switching-in loop and voltage detection trigger pulse circuit behind the voltage transformation, the output of auxiliary switching-in loop and voltage detection trigger pulse circuit is connected power switch.
As shown in Figure 2, the live wire of electrical network is connected with the input of zero line with uninterrupted power supply UPS, and the output of uninterrupted power supply UPS is directly just planted the ripple power supply with AC power and is connected with the wireless telecommunications power supply.The output of uninterrupted power supply UPS also is connected with the input of transformer T1, the output of transformer T1 is connected with the input of bridge rectifier V1-V4 and V5-V6, bridge rectifier V1-V4 output with control power supply be connected, the output of bridge rectification power V5-V6 is connected with signal power source.Power switch is directly by unilateral diode V11, and V12 obtains after the V13 halfwave rectifier.The auxiliary switching-in loop is by transformer T2, and change over switch SA3 and storage capacitor C11 form, and the input of transformer T2 is connected with electrical network, and its output is connected with power switch by change over switch SA3.The input of transformer T3 is connected with electrical network, and its output is connected by detecting the trigger impulse loop with power supply after diode V27-V32 and the V21-V26 halfwave rectifier, and power supply detection trigger impulse loop output is connected with power switch.
During normal the operation, electrical network is passing through resistance R 11 by transformer T2 after unilateral diode V9 halfwave rectifier through (1), (2) contact of SA3 change over switch, and to capacitor C 11 chargings, it is 400V that the element of design apolegamy makes the voltage after capacitor C 11 is substituted the bad for the good.When line voltage descends suddenly, the situation of change that the W3 winding of transformer T3 is experienced causes that the voltage on the resistance R 23 rises suddenly, causes comparator D1 upset, promotes Darlington transistor D2, make and trigger controllable silicon V10 conducting by trigger impulse of pulse transformer T3 output.Be stored in the electric energy of capacitor C 11 (6), (5) contact by the V10 path this moment and be added on the closing bus bar, just finished all processes of auxiliary switching-in.During debugging, the backward end adjustable resistance RT1 of scalable comparator D1 sets line voltage and is reduced to which kind of width of cloth and makes the controllable silicon conducting when straight.The W2 winding of transformer T3 then provides working power for the chip that pulse-triggered extremely goes up, when line voltage descended, it also can descend thereupon, but the discharge period is short, have only 0.17 second, and the electric capacity in this operating voltage can after disappearing, the input power supply be kept work more than 1.5 seconds.
The UPS performance of using on uninterrupted power supply UPS and the computer is in full accord.Select for use 1.5KW online during design, internal cell voltage 60V, capacity 38Ah.Can use more than 1 hour for electric substation behind the electric network power-fail.On line type UPS does not have 0.04 second the outage blanking time of backup type when power supply has a power failure when grid power blackout, again power down and continue smooth working when sending a telegram here again.
Since signal power source and control power supply or hydroelectric station operation in the different in kind of being loaded, general signal power source will be with this type load of pulse relay usually, to power supply require higherly, therefore in signal power source, add capacitor C 1, C2, C3 and resistance R 1, R2 and can play filtering and pressure stabilization function.To can not exert an influence by the interior polarized relay of impact relay after handling like this.And the control power supply does not need higher requirement, and flashing relay in parallel after rectification is to obtain flashing power source just.
Claims (5)
1. compact type substation power plant shields with uninterrupted power of alterating and direct current, it is characterized in that it continues the uninterrupted power supply UPS of power supply when being used for electrical network and breaking down, auxiliary switching-in loop of charging to electric capacity during normal operation the and the electric capacity that makes the auxiliary switching-in loop when electrical network breaks down are formed to the voltage detection trigger pulse circuit of power switch discharge, the input of uninterrupted power supply UPS is connected with electrical network, its output directly with plant the ripple power supply and be connected with the wireless telecommunications power supply, its output is also by being connected with signal power source with the control power supply after the transformation rectification, power switch is directly obtained after by halfwave rectifier from electrical network, electrical network is by connecting the input of auxiliary switching-in loop and voltage detection trigger pulse circuit behind the voltage transformation, the output of auxiliary switching-in loop and voltage detection trigger pulse circuit is connected power switch.
2. uninterrupted power of alterating and direct current screen according to claim 1, the live wire that it is characterized in that electrical network is connected with the input of zero line with uninterrupted power supply UPS, the output of uninterrupted power supply UPS is directly just planted the ripple power supply with AC power and is connected with the wireless telecommunications power supply, the output of uninterrupted power supply UPS also is connected with the input of transformer T1, the output of transformer T1 is connected with the input of bridge rectifier V1-V4 and V5-V6, bridge rectifier V1-V4 output with control power supply be connected, the output of bridge rectification power V5-V6 is connected with signal power source.
3. uninterrupted power of alterating and direct current screen according to claim 1 is characterized in that power switch directly by unilateral diode V11, and V12 obtains after the V13 halfwave rectifier.
4. uninterrupted power of alterating and direct current screen according to claim 1, it is characterized in that the auxiliary switching-in loop is by transformer T2, change over switch SA3 and storage capacitor C11 form, and the input of transformer I2 is connected with electrical network, and its output is connected with power switch by change over switch SA3.
5. uninterrupted power of alterating and direct current screen according to claim 1, the input that it is characterized in that transformer T3 is connected with electrical network, its output is connected by detecting the trigger impulse loop with power supply after diode V27-V32 and the V21-V26 halfwave rectifier, and power supply detection trigger impulse loop output is connected with power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96221083 CN2283943Y (en) | 1996-08-29 | 1996-08-29 | Uninterruption AC, DC power-supply screen for small substation electric power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96221083 CN2283943Y (en) | 1996-08-29 | 1996-08-29 | Uninterruption AC, DC power-supply screen for small substation electric power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2283943Y true CN2283943Y (en) | 1998-06-10 |
Family
ID=33901133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96221083 Expired - Fee Related CN2283943Y (en) | 1996-08-29 | 1996-08-29 | Uninterruption AC, DC power-supply screen for small substation electric power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2283943Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305201C (en) * | 2003-07-03 | 2007-03-14 | 太原铁路水电工程勘察设计公司 | Passive capacity on line direct current power supply screen |
-
1996
- 1996-08-29 CN CN 96221083 patent/CN2283943Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1305201C (en) * | 2003-07-03 | 2007-03-14 | 太原铁路水电工程勘察设计公司 | Passive capacity on line direct current power supply screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |