CN201608682U - Digital voltage regulator of synchronous generator - Google Patents
Digital voltage regulator of synchronous generator Download PDFInfo
- Publication number
- CN201608682U CN201608682U CN2009202992330U CN200920299233U CN201608682U CN 201608682 U CN201608682 U CN 201608682U CN 2009202992330 U CN2009202992330 U CN 2009202992330U CN 200920299233 U CN200920299233 U CN 200920299233U CN 201608682 U CN201608682 U CN 201608682U
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- voltage regulator
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Abstract
The utility model discloses a digital voltage regulator of a synchronous generator. A voltage regulator circuit is the leading regulator of a voltage regulating system. A voltage actual value signal which is taken from a bus by a transformer passes through a rectification circuit, then passes through an A/D converter and is input and given by a voltage feedback channel of the voltage regulator to form an outer voltage loop. Inner loop current is regulated by a current detection circuit in the voltage regulator, and the current closely follows the given value to change in the regulating process of outer loop voltage. The digital voltage regulator plays a role of timely anti-jamming to fluctuation of voltage. In the dynamic process of voltage, the biggest exciting current allowed by the generator is obtained, and therefore the dynamic process is accelerated. When the generator is in overvoltage, the maximum value of the exciting current is limited, and the digital voltage regulator plays a role of quick automatic protection. Once faults disappear, the system automatically gets right immediately. A reactive power equalization circuit is detected and regulated by a synchronization controller, gives orders to the given loop of the voltage regulator and reaches the equalization of reactive power by regulating the voltage of the generator end.
Description
Technical field
The utility model belongs to microelectronics and electric and electronic technical field, a particularly a kind of complete digital voltage regulator of synchronous power generator based on microprocessor.
Background technology
Present synchronous generator voltage regulator great majority adopt analog circuitry system.Its element testing, screening, burin-in process, welding and production technology etc. all are restricted, and be long in time limit, cost is high, performance is low, and the debugging more complicated, if break down, the maintenance point is many, requires very high to the on-site maintenance and the operating personnel of electricity generation system.Have a strong impact on the safe and reliable operation of adjuster, thereby caused generator voltage shakiness, reactive current to distribute unbalanced.
Summary of the invention
The technical problems to be solved in the utility model is exactly to eliminate the deficiency and the shortcoming of above-mentioned technology, for synchronous generator designs a kind of debugging simply, and formula digital voltage regulator of synchronous power generator easy to maintenance.
For achieving the above object, solution of the present utility model is: a kind of digital voltage regulator of synchronous power generator, given by numeral, rectifier, A/D converter, synchronous generator, transformer and voltage regulator circuit are formed, described voltage regulator circuit is the leading adjuster of voltage-regulating system, the voltage actual value signal of getting through transformer from bus passes through rectification circuit, again through second A/D converter, Voltage Feedback passage input from voltage regulator, with the given formation dispatch from foreign news agency of numeral pressure ring, it changes the very fast set-point of following of voltage, can realize floating during stable state, the exciting current regulating circuit is the auxiliary governor of voltage-regulating system, the exciting current actual value signal that first current transformer is fetched is through first A/D converter, current feedback passage input from voltage regulator, constitute interior electric current loop with the output of voltage regulator circuit, outside in the adjustment process of loop voltag, making electric current tightly follow its set-point changes, the output of exciting current regulating circuit is as the input of trigger, silicon controlled trigger angle in the output control rectifier of trigger, thereby change exciting current, reach the purpose of regulating the synchronous generator set end voltage, net-connected controller detects voltage signal of getting through second transformer from bus and the current signal of getting through second current transformer from bus, after the reactive power of this machine of calculating and other online generator reactive power compare, the conditioning signal that sends is through the 3rd A/D converter, with after the given addition of numeral as the given signal of voltage regulator, the reactive power equalizing circuit forms to be controlled the terminal voltage of generator, thereby the equilibrium that realizes reactive power between online each generator distributes.
Advanced part of the present utility model is that this voltage regulator comprises that mainly ring adjusting, generator voltage outer shroud are regulated and the reactive power equalizing circuit in the exciting current.
Voltage regulator circuit is the leading adjuster of voltage-regulating system, and the voltage actual value signal of getting through transformer from bus passes through rectification circuit, again through A/D converter, from the Voltage Feedback passage input of voltage regulator, with given formation dispatch from foreign news agency pressure ring.Consider the influence of direct current system thyristor commutation breach to feedback, Voltage Feedback adopts independent transformer sampling, to reduce the interference of electrical network to feedback path.It changes the very fast set-point of following of voltage, can realize floating during stable state; Change in voltage is played the anti-interference effect; The maximum voltage that its output violent change value decision generator allows.
Interior circular current is regulated the current detection circuit of using voltage regulator inside, in the adjustment process of loop voltag, makes electric current tightly follow its set-point and changes outside; Fluctuation to voltage plays timely anti-interference; In the voltage dynamic process, guarantee to obtain the maximum exciting current that generator allows, thereby accelerate dynamic process; When the generator overvoltage, the maximum of restriction exciting current plays protective effect automatically fast, in case fault disappears, it is normal that system is recovered immediately automatically.
The reactive power equalizing circuit adopts net-connected controller to detect, regulate and issue instructions to the given loop of voltage regulator, by the regulator generator terminal voltage to reach the equilibrium of reactive power.
The utility model compared with prior art has the following advantages:
1. structure compact with it and the saving space is a characteristic, because each parts are approaching easily, its compact design makes their maintenance and maintenance especially easily.
2. this voltage regulator can be equipped with an ease of Use panel PMU, by one 5, and 7 sections demonstrations, three led state demonstrations and three parameters are provided with key and form.PMU also has according to RS232 or the RS485 standard connector X300 with the USS interface.Guidance panel PMU provides in order to start all instruments that required adjustment of carrying out of voltage regulator and setting and measured value show.
OP1S option guidance panel both can be installed on the voltage regulator door, can outsidely install again, for example on the cabinet door.Therefore, he can connect by 5 a meters long cable.If have one independently the 5V power supply can use, then cable can grow to 50 meters.OP1S is connected to voltage regulator by X300.The measuring instrument that OP1S can be used as an economy is installed in control cubicle, is used for showing the physical measurements values of some.OP1S provides the LCD of one 4 * 16 character with simple text display parameters title, can select German, English, and French, Spanish and Italian are as showing languages.In order easily to download parameter to other devices, OP1S can the stored parameter group.
3. by the serial line interface on the elementary cell, use appropriate software, the PC of standard also can carry out the parameter setting to voltage regulator.This PC interface can be used on startup, shuts down in maintenance and the operational diagnostics process.In addition, the software upgrading of voltage regulator can be passed through this interface, loads and stores in the flash memory.
4. this voltage regulator frequency of supply can be inequality within 45～65Hz scope; The power supply phase sequence does not require.Be single quadrant work, power by three-phase full-controlled bridge B6C.The power cell of voltage regulator adopts independent thyristor module structure, and radiator insulate, and its outside is charged.The terminal cap of cabinet and power supply connection place provides accidental shock protection for the operating personnel that work nearby, and all wiring all are positioned at the front.
5. communication modes variation, powerful.Feasible communication with upper industrial computer is simple and convenient, realizes remote monitoring easily.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Referring to shown in Figure 1, this digital voltage regulator of synchronous power generator, described voltage regulator circuit 2 is leading adjusters of voltage-regulating system, the voltage actual value signal of getting through transformer 11 from bus passes through rectification circuit 10, again through second A/D converter 9, Voltage Feedback passage input from voltage regulator, constitute the dispatch from foreign news agency pressure ring with numeral given 1, it changes the very fast set-point of following of voltage, can realize floating during stable state, exciting current regulating circuit 3 is auxiliary governors of voltage-regulating system, the exciting current actual value signal that first current transformer 7 is fetched is through first A/D converter 6, current feedback passage input from voltage regulator, constitute interior electric current loop with the output of voltage regulator circuit 2, outside in the adjustment process of loop voltag, making electric current tightly follow its set-point changes, the output of exciting current regulating circuit 3 is as the input of trigger 4, silicon controlled trigger angle in the output control rectifier 5 of trigger 4, thereby change exciting current, reach the purpose of regulating synchronous generator 8 terminal voltages, net-connected controller 13 detects voltage signal of getting through second transformer 14 from bus and the current signal of getting through second current transformer 15 from bus, after the reactive power of this machine of calculating and other online generator reactive power compare, the conditioning signal that sends is through the 3rd A/D converter 12, with after given 1 addition of numeral as the given signal of voltage regulator, the reactive power equalizing circuit forms to be controlled the terminal voltage of generator, thereby the equilibrium that realizes reactive power between online each generator distributes.Thereby the equilibrium that realizes reactive power between online each generator distributes.
Claims (1)
1. digital voltage regulator of synchronous power generator, given by numeral, rectifier, A/D converter, synchronous generator, transformer and voltage regulator circuit are formed, it is characterized in that: described voltage regulator circuit (2) is the leading adjuster of voltage-regulating system, the voltage actual value signal of getting through transformer (11) from bus passes through rectification circuit (10), again through second A/D converter (9), Voltage Feedback passage input from voltage regulator, constitute the dispatch from foreign news agency pressure ring with numeral given (1), it changes the very fast set-point of following of voltage, can realize floating during stable state, exciting current regulating circuit (3) is the auxiliary governor of voltage-regulating system, the exciting current actual value signal that first current transformer (7) is fetched is through first A/D converter (6), current feedback passage input from voltage regulator, constitute interior electric current loop with the output of voltage regulator circuit (2), outside in the adjustment process of loop voltag, making electric current tightly follow its set-point changes, the output of exciting current regulating circuit (3) is as the input of trigger (4), silicon controlled trigger angle in the output control rectifier (5) of trigger (4), thereby change exciting current, regulate synchronous generator (8) terminal voltage, net-connected controller (13) detects voltage signal of getting through second transformer (14) from bus and the current signal of getting through second current transformer (15) from bus, after the reactive power of this machine of calculating and other online generator reactive power compare, the conditioning signal that sends is through the 3rd A/D converter (12), with after numeral given (1) addition as the given signal of voltage regulator, the reactive power equalizing circuit forms to be controlled the terminal voltage of generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202992330U CN201608682U (en) | 2009-12-14 | 2009-12-14 | Digital voltage regulator of synchronous generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202992330U CN201608682U (en) | 2009-12-14 | 2009-12-14 | Digital voltage regulator of synchronous generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201608682U true CN201608682U (en) | 2010-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202992330U Expired - Lifetime CN201608682U (en) | 2009-12-14 | 2009-12-14 | Digital voltage regulator of synchronous generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN201608682U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518481A (en) * | 2013-10-08 | 2015-04-15 | 山东迪生电气股份有限公司 | Method for improving overvoltage protection sensitivity of generator-transformer unit |
-
2009
- 2009-12-14 CN CN2009202992330U patent/CN201608682U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518481A (en) * | 2013-10-08 | 2015-04-15 | 山东迪生电气股份有限公司 | Method for improving overvoltage protection sensitivity of generator-transformer unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101013 |
|
| CX01 | Expiry of patent term |