CN87215773U - Sihcon controlled dc power supply - Google Patents
Sihcon controlled dc power supply Download PDFInfo
- Publication number
- CN87215773U CN87215773U CN 87215773 CN87215773U CN87215773U CN 87215773 U CN87215773 U CN 87215773U CN 87215773 CN87215773 CN 87215773 CN 87215773 U CN87215773 U CN 87215773U CN 87215773 U CN87215773 U CN 87215773U
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- circuit
- voltage
- direct current
- current
- controlled
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- Expired - Lifetime
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model relates to a silicon controlled direct current power supply device particularly designed for satisfying the direct current operation of transformer stations with the voltage below 220KV. A main circuit adopts silicon controlled three-phase half-wave rectification, and output direct-current voltage can be continuously adjusted between 0-257V. An automatic adjusting circuit comprises a direct current mutual inductor, a voltage regulator circuit, an over current circuit, a protection circuit, an automatic charge and discharge circuit and a trigger circuit. When the voltage at direct current output terminal changes, the trigger circuit can change the conduction state of the controlled silicon in time, and the trigger circuit can adjust via the controlled silicon to obtain the aim of voltage regulation. The device has small size, convenient operation, no pollution, large capacity and small workload of maintenance.
Description
The utility model relates to a kind of continuous-current plant, particularly a kind of following transformer station of 220KV that is used for, the dc operation of electric substation, and communication system, vessel department, factory, the controllable silicon continuous-current plant of laboratory direct current supply.
Electric power system at present, the employed DC power supply of departments such as communication still is the acid direct-flow storage battery device of the fifties, this device volume is big, pernicious gas discharges, contaminated environment, floor space is big, investment high (about about 100,000 yuan of the complete set of equipments fully invested of one group of 300AH), and the operation maintenance workload is big.Cadmium nickel DC power supply panel is to utilize the silicon rectifier electromagnetic principle that ickel-cadmium cell is charged, wherein transformer is indispensable parts, the silicon rectifier screen is placed in the main control room, AC noise is bigger, influence the attentiveness that the operations staff supervises screen, and this apparatus cost height (complete set of equipments of one group of 40AH is invested about about 50,000 yuan).
The purpose of this utility model is exactly a kind of controllable silicon continuous-current plant that designs at above deficiency, utilize controllable silicon and other electron component to form this device, it can provide the DC power supply again can be automatically to the colloid storage battery charge and discharge, its output voltage is adjustable continuously, can adapt to the needs of various different occasions.
The utility model is achieved in that the main effect of main circuit is rectification.Automatic circuit comprises, voltage stabilizing circuit 7 is crossed current circuit 4, overvoltage circuit 5, automatic/hand change-over circuit 8, auto charge and discharge circuit 10, protective circuit 6 and colloid storage battery 11.Automatic circuit is to adopt negative feedback to amplify closed-loop system to control, and utilizes thyristor KP1, KP2, KP3 to reach the purpose of adjusting output voltage by the trigger angle that changes controllable silicon KP1-KP3 as adjusting link.The adjustment process of automatic circuit, be actually the series of balanced process when the voltage of dc output end changes, W1 reflects by measuring component, by voltage stabilizing circuit 7, automatic/hand change-over circuit 8 is given circuits for triggering 9, it is to utilize the moment of synchronizing voltage zero crossing to form sawtooth waveforms for capacitor C 1 charging (or discharge) on capacitor C 1, again with the control voltage of a direct current therewith sawtooth waveforms compare, make transistor BG1 upset pass through shaping again at the intersection point place, amplify, remove to control controllable silicon KP1 by pulse transformer B1 output pulse signal at last, KP2, the conduction state of KP3, circuits for triggering 9 are in time adjusted controllable silicon KP1, KP2, the conduction state of KP3 is adjusted to output voltage the numerical value of regulation.Output voltage is stablized.Colloid storage battery 11 is used for energy storage, and it is to be composed in series 220 volts of direct voltages by 18, and its effect is to deal with interim outage, and emergency lighting and dc operation are provided with, and its capacity is 90AH, and instantaneous discharge is greater than 300A.
The utility model can be achieved in that in main circuit forms the three-phase controllable silicon halfwave rectifier by controllable silicon KP1, KP2, KP3, and the size of output voltage is realized by the state that changes circuits for triggering 9.Three-phase controllable silicon half-wave rectifying circuit 1 output dc voltage 0-257 volt is adjustable continuously, is realized reducing ripple coefficient by the LC filter that L1, L2, C3, C4 form, and direct current instrument transformer 3 provides overcurrent protection setting.
The utility model adopts controllable silicon technology and colloid storage battery matching design to form, and control section adopts the all-electronin circuit, has the automaticity height, characteristic of strong applicability.The big maintenance workload of this installed capacity is little, and is safe and reliable to operation, and fitting operation is easy, pollution-free, and cost is low.Colloid storage battery has the little characteristics of self discharge, only needs about 10,000 yuan for whole devices (comprising charger) of the group storage battery of 220 volts of 90AH, but more than the every year saves energy 18000 degree/covers.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is a functional-block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Power supply indicator LD among Fig. 2, over-voltage and over-current indicator light HD1, fuse indicator light HD2, start button QA, shutdown button TA, automatic/hand regulator potentiometer W1 W2 is installed on the panel of this device.
After the three-phase and four-line AC power inserted this device circuit, power supply indicator LD was bright, various protective circuit work simultaneously.After pressing start button QA; A.C. contactor J1 adhesive; circuits for triggering 9 are exported synchronous triggering signal and are given controllable silicon KP1 under the effect of synchrotrans B3 simultaneously; KP2; KP3; it places an order to conducting in the effect of triggering signal; finish rectification work; then through LC filter 2 and direct current instrument transformer 3 output dc voltages; the direct voltage of output is through voltage stabilizing circuit 7; overvoltage circuit 5 is crossed current circuit 4, protective circuit 6; automatic/hand change-over circuit 8 feeds back to circuits for triggering 9; circuits for triggering 9 are in time adjusted cycle of triggering signal according to the voltage signal of feedback, through controllable silicon KP1; KP2; KP3 adjusts, and plays the voltage stabilizing purpose.The protection of overcurrent, overvoltage fuse is that its normally opened contact closure is connected sensitive relay J6, J7, J8, after their adhesives, A.C. contactor J1 is discharged, and cuts off AC power, sends alarm signal by after the alarm fuse RD ' fusing.
Be connected to colloid storage battery 11 at dc output end, the charging of colloid storage battery 11 is finished by main circuit, when battery discharging to a certain degree the time, its terminal voltage will change, when to 220 volts of direct current supplys, when being lower than 198 volts, low-voltage relay J2 adhesive, storage battery 11 is connected DC power supply by D.C. contactor J4 and is charged, when charging finishes, when the terminal voltage of its storage battery is increased to the 260-280 volt, high-voltage relay J10 adhesive, cut off charge power supply, finish the auto charge and discharge process.The auto charge and discharge circuit mainly is by field effect transistor BG2, controllable silicon KP4, and relay J 10 and diode, resistance, electric capacity is formed.When storage battery 11 charging finished, field effect transistor BG2 grid voltage raise, and at this moment, selected sectional pressure element (R1, R2), when making the BG grid voltage be raised to certain value, conducting is sent triggering signal and is made controllable silicon KP4 conducting, after the KP4 conducting, relay J 10 adhesives cut off exchanging input, and charging finishes.When battery discharging to a certain degree, when the colloid storage battery terminal voltage reduces, low-voltage relay J2 action.Its normally opened contact closure, through 9 seconds time-delay back KP4 by capacitor C 5 short circuits, this moment, controllable silicon KP4 ended, charging end along with capacitor C 5, the power supply of block system relay J10 discharges relay J 10, and AC power inserts again charges to colloid storage battery 11, finish once circulation, later process repeats.
Claims (2)
1, a kind of by circuits for triggering 9; automatic/hand change-over circuit 8; voltage stabilizing circuit 7; overvoltage circuit 5 is crossed current circuit 4, auto charge and discharge circuit 10; the continuous-current plant that protective circuit 6 and colloid storage battery 11 are formed; it is characterized in that: this continuous-current plant has been set up main circuit, and main circuit comprises three-plase half wave rectifier circuit 1 and the LC filter of being made up of controllable silicon KP1, KP2, KP3 2, direct current instrument transformer 3.
2, continuous-current plant according to claim 1; it is characterized in that: voltage stabilizing circuit 7 takes out voltage change signal; flow to circuits for triggering 9 through automatic/hand change-over circuit 8; circuits for triggering 9 are in time adjusted and are outputed signal to main circuit 1, and main circuit 1 in time changes conduction state, changes output voltage; direct current instrument transformer 3; overvoltage circuit 5 is crossed current circuit 4, protective circuit 6 protection main circuit over-voltage and over-currents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87215773 CN87215773U (en) | 1987-11-25 | 1987-11-25 | Sihcon controlled dc power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87215773 CN87215773U (en) | 1987-11-25 | 1987-11-25 | Sihcon controlled dc power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87215773U true CN87215773U (en) | 1988-11-02 |
Family
ID=4829838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87215773 Expired - Lifetime CN87215773U (en) | 1987-11-25 | 1987-11-25 | Sihcon controlled dc power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87215773U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057438A (en) * | 2012-12-31 | 2013-04-24 | 江西稀有稀土金属钨业集团有限公司 | Automatic control device for silicon rectifiers |
| CN115966368A (en) * | 2023-01-12 | 2023-04-14 | 辽宁万邦输油气管道设备制造有限公司 | Pipeline heating and magnetizing integrated machine |
-
1987
- 1987-11-25 CN CN 87215773 patent/CN87215773U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057438A (en) * | 2012-12-31 | 2013-04-24 | 江西稀有稀土金属钨业集团有限公司 | Automatic control device for silicon rectifiers |
| CN103057438B (en) * | 2012-12-31 | 2016-04-27 | 江西稀有稀土金属钨业集团有限公司 | Silicon rectifier automatic control device |
| CN115966368A (en) * | 2023-01-12 | 2023-04-14 | 辽宁万邦输油气管道设备制造有限公司 | Pipeline heating and magnetizing integrated machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |