CN202759409U - Low voltage synchronous generator excitation system - Google Patents
Low voltage synchronous generator excitation system Download PDFInfo
- Publication number
- CN202759409U CN202759409U CN201220433307.7U CN201220433307U CN202759409U CN 202759409 U CN202759409 U CN 202759409U CN 201220433307 U CN201220433307 U CN 201220433307U CN 202759409 U CN202759409 U CN 202759409U
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- rectifier bridge
- synchronous generator
- excitation
- low pressure
- generator
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Abstract
Disclosed is a low voltage synchronous generator excitation system, comprising a generator, a de-excitation unit, an excitation switch, a rectifier bridge, a regulator, a power supply unit, an output unit, and a display module, wherein the power supply unit is connected with the regulator; the de-excitation unit is connected with a generator rotor; the generator terminal is connected to the excitation switch; the rectifier bridge is connected with the de-excitation unit and the excitation switch; the excitation switch, the rectifier bridge, and the output unit are connected with the regulator; and the regulator is connected with the display module. The utility model mainly focuses on small sized synchronous generator self-shunt excitation system or brushless excitation system having generator terminal voltage of 400V which is capable of saving investment in the power station as much as possible and reducing the workload of system maintenance while ensuring the reliability.
Description
Technical field
The utility model relates to excitation system, particularly a kind of low pressure synchronous generator excited system.
Background technology
For the small low-voltage synchronous generator excited system, traditional way adopts the method for designing identical with the large and medium generator excitation system, as disposes powerful excitation transformer, employing three-phase full-controlled rectifier bridge and special DC field suppression switch etc.Because the performance index that requirement reaches to small unit are lower, adopt complicated method for designing not only to increase cost of investment, also increased the potential faults point of system simultaneously.
Summary of the invention
Technical problem to be solved in the utility model is that not enough for prior art, it is the Mini-type synchronous generator self-shunt excitation system of 400V or the low pressure synchronous generator excited system of brushless excitation system that a kind of set end voltage that is adapted to is provided.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of low pressure synchronous generator excited system, comprise generator, demagnetization unit, field switch, rectifier bridge, adjuster, power subsystem, relay, display module, described power subsystem is connected with adjuster, the demagnetization unit is connected with generator amature, the Generator termination enters field switch, rectifier bridge is connected with demagnetization unit, field switch, field switch, rectifier bridge, relay are connected with adjuster, and adjuster is connected with display module.
Compared with prior art, the utility model is Mini-type synchronous generator self-shunt excitation system or the brushless excitation system of 400V for set end voltage, in the cost of investment that guarantees to save the power station under the prerequisite of reliability as far as possible, has reduced the workload of system maintenance.
Description of drawings
Fig. 1 is the utility model one example structure block diagram.
Embodiment
As shown in Figure 1, the utility model one embodiment comprises generator, demagnetization unit, field switch, rectifier bridge, adjuster, power subsystem, relay, display module, described power subsystem is connected with adjuster, the demagnetization unit is connected with generator amature, the Generator termination enters field switch, rectifier bridge is connected with demagnetization unit, field switch, and field switch, rectifier bridge, relay are connected with adjuster, and adjuster is connected with display module.
Adjuster is a cover single board computer system, comprises the circuit boards such as power panel, sampling plate, CPU board, input/output board, and wherein the core parts of CPU board are the DSP(digital signal processor) and the CPLD(CPLD).
Input signal comprises the ac analog input signals such as generator voltage, dynamo current; The DC analogue quantity such as exciting voltage, exciting current input signal and switching value input signal.
Power subsystem comprises AC220V and DC220V(DC110V) the two-way power supply inputs simultaneously, and is for subsequent use each other, and undisturbed switches; Power subsystem adopts the GSM-H100S24 Switching Power Supply.
Display module is liquid crystal display or touch-screen.
Field switch is a single phase alternating current (A.C.) circuit breaker, comprises manually and the automatic operation unit possessing manual and automatic breaker tripping and closing function.Input sending and receiving motor outlet side power supply, output termination rectifier bridge.When field switch closes a floodgate, power connection; During tripping operation, power supply disconnects, and the field switch model is DW15-630/3P.
Rectifier bridge comprises overvoltage, the over-current protecting units such as the single-phase full-controlled rectifier bridge that is comprised of four controllable silicons and fast acting fuse, resistance-capacitance absorption loop; its effect is that the AC power from field switch is rectified into direct current, and comes the size of regulation output direct current according to the variation from the field regulator silicon controlled trigger signal.Rectifier bridge is provided with the fast acting fuse for overcurrent protection, has signal generator to send signal when fuse blows; Each controllable silicon also connects one group of resistance capacitance loop, is used for realization to the overvoltage protection of rectifier bridge.Generator amature is received in the output of rectifier bridge, provides exciting current to generator.
The demagnetization unit comprises a linear de-excitation resistance and the overvoltage protection loop that is comprised of nonlinear resistance, and the de-excitation resistance model is ZX10, and the demagnetization unit is connected in parallel on the DC side of rectifier bridge, absorbs the generator amature energy when accidental shutdown, realizes quick de-excitation.The demagnetization unit is equipped with nonlinear resistance, is used for realization to the overvoltage protection of rotor.
From generator PT and CT(current transformer) voltage signal and current signal, enter the sampling plate of field regulator through shunt, exciting voltage signal from the exciting current signal of generator amature side, by the calculation process of CPU board, realize the measurement to set end voltage, machine end electric current, reactive power, active power, frequency, exciting current, exciting voltage; From the start of peripheral operation, shut down, increase the switching value signals such as magnetic, demagnetize and after the input/output board isolation, enter CPU board, export through input/output board from operation signal and the fault-signal of CPU board; The power supply signal that the power panel of field regulator receives from power subsystem provides working power to field regulator after the conversion isolation.CPU board is exported four road silicon controlled trigger signals to four controllable silicons of rectifier bridge according to different operating conditions, realizes the adjusting to exciting current (voltage) size.
Output unit receives the output signal from field regulator, comprises that the switching value signals such as operation and fault export to other automation equipments; The operating state of the display element such as signal lamp, instrument display system; RS485 serial communication and Ethernet output, built-in MODBUS standard traffic is assisted, and realization is communicated by letter with host computer; Output unit control relay model is RCL424024 DC24V.
The low pressure synchronous generator excited system adopts the PID control law; Have the operational modes such as constant voltage, constant current, permanent idle, constant power factor, permanent pilot angle; Have automatic and manual two kinds of operation functions; Operating function and overvoltage protection, overcurrent protections such as having start, be incorporated into the power networks, load rejection, shutdown, accent are poor, advance mutually to limit, cross encourage restriction, encourage restriction by force, voltage/frequency limits, hangs down the defencive functions such as all demagnetizations, field loss protection, PT (voltage transformer) breaking protection.
Claims (7)
1. low pressure synchronous generator excited system, comprise generator, demagnetization unit, field switch, rectifier bridge, adjuster, power subsystem, output unit, display module, it is characterized in that, described power subsystem is connected with adjuster, the demagnetization unit is connected with generator amature, and the Generator termination enters field switch, and rectifier bridge is connected with demagnetization unit, field switch, field switch, rectifier bridge, output unit are connected with adjuster, and adjuster is connected with display module.
2. low pressure synchronous generator excited system according to claim 1 is characterized in that, described field switch model is DW15-630/3P.
3. low pressure synchronous generator excited system according to claim 1 is characterized in that, described demagnetization unit adopts the ZX10 de-excitation resistance.
4. low pressure synchronous generator excited system according to claim 1 is characterized in that, described power subsystem adopts the GSM-H100S24 Switching Power Supply.
5. low pressure synchronous generator excited system according to claim 1 is characterized in that, described output unit adopts RCL424024 DC24V control relay.
6. low pressure synchronous generator excited system according to claim 1 is characterized in that, described rectifier bridge is single-phase full-controlled rectifier bridge.
7. low pressure synchronous generator excited system according to claim 1 is characterized in that, described display module is liquid crystal display or touch-screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220433307.7U CN202759409U (en) | 2012-08-29 | 2012-08-29 | Low voltage synchronous generator excitation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220433307.7U CN202759409U (en) | 2012-08-29 | 2012-08-29 | Low voltage synchronous generator excitation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202759409U true CN202759409U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220433307.7U Expired - Lifetime CN202759409U (en) | 2012-08-29 | 2012-08-29 | Low voltage synchronous generator excitation system |
Country Status (1)
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| CN (1) | CN202759409U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120195A (en) * | 2018-08-23 | 2019-01-01 | 国网江苏省电力有限公司盐城供电分公司 | A kind of synchronous generator brushless excitation regulating system |
| CN109617478A (en) * | 2018-12-17 | 2019-04-12 | 四川茂龙发电设备制造有限公司 | A kind of Excitation Control System of Synchronization Generator |
| CN110531263A (en) * | 2019-09-12 | 2019-12-03 | 岭澳核电有限公司 | Nuclear power plant's emergency diesel dynamo off-line testing method |
| CN112104276A (en) * | 2020-08-21 | 2020-12-18 | 岭澳核电有限公司 | Power supply output circuit of excitation regulator of nuclear power plant |
-
2012
- 2012-08-29 CN CN201220433307.7U patent/CN202759409U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120195A (en) * | 2018-08-23 | 2019-01-01 | 国网江苏省电力有限公司盐城供电分公司 | A kind of synchronous generator brushless excitation regulating system |
| CN109617478A (en) * | 2018-12-17 | 2019-04-12 | 四川茂龙发电设备制造有限公司 | A kind of Excitation Control System of Synchronization Generator |
| CN110531263A (en) * | 2019-09-12 | 2019-12-03 | 岭澳核电有限公司 | Nuclear power plant's emergency diesel dynamo off-line testing method |
| CN112104276A (en) * | 2020-08-21 | 2020-12-18 | 岭澳核电有限公司 | Power supply output circuit of excitation regulator of nuclear power plant |
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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: 20130227 |
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| CX01 | Expiry of patent term |