CN206573688U - Generator excitation regulator detecting system - Google Patents

Generator excitation regulator detecting system Download PDF

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Publication number
CN206573688U
CN206573688U CN201720068682.9U CN201720068682U CN206573688U CN 206573688 U CN206573688 U CN 206573688U CN 201720068682 U CN201720068682 U CN 201720068682U CN 206573688 U CN206573688 U CN 206573688U
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China
Prior art keywords
field regulator
generator
interface equipment
circuit
analog quantity
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CN201720068682.9U
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邓丽君
郭琦
袁艺
李书勇
崔柳
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China South Power Grid International Co ltd
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China South Power Grid International Co ltd
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Abstract

The utility model discloses a generator excitation regulator detecting system relates to electric power system technical field, for the problem of the error of introducing in solving the dynamic behavior testing process. The detection system of the excitation regulator of the generator comprises an excitation regulator device, simulation interface equipment and a real-time simulation device, wherein the real-time simulation device is connected with the excitation regulator device through the simulation interface equipment, the excitation regulator device comprises an excitation regulator main control system and an excitation regulator analog quantity sampling plate, the excitation regulator analog quantity sampling plate is respectively connected with the simulation interface equipment and the excitation regulator main control system, and the excitation regulator analog quantity sampling plate directly outputs a small voltage signal acquired from the simulation interface equipment to the excitation regulator main control system.

Description

Automatic excitation adjustor of generator detecting system
Technical field
The utility model is related to technical field of power systems, more particularly to a kind of automatic excitation adjustor of generator detecting system.
Background technology
The dynamic property of the field regulator of generator has weight for the voltage stability in power plant and whole power network The influence wanted.Especially under the conditions of direct current isolated island, influence of the power plant voltage pulsation to the stability of islanded system is more conventional to hand over The influence of power plant is more direct and notable in streaming system, therefore carries out the dynamic property inspection of direct current isolated island automatic excitation adjustor of generator Survey very necessary, before actually coming into operation, the control for grasping islanded system in the case of different operating modes and failure by studying Can characteristic processed, examine it meet the requirement of stable operation.
Because the relevant device of network system and power plant is various and control characteristic is complicated, it is considered to detection experiment safety factor, Actual field regulator device can not possibly be accessed to real generator and power system carries out detection experiment, therefore using real When simulator simulation system primary equipment closed loop connected and composed by emulation interface equipment with excitation regulator system tried Test.The closed test of prior art obtains the signal consistent with scene to ensure to measure, and will be imitated in real time using power amplifier The analog signal that true device is sent out is amplified, and is re-fed into the detection that field regulator device carries out dynamic property.But power is put Big device is received, amplified, the process signal of transmission signal is readily incorporated error, while detecting that experiment also occupies power amplifier money Source.
Utility model content
The purpose of this utility model is to provide a kind of automatic excitation adjustor of generator detecting system, can reduce dynamic property The error introduced in detection process.
To achieve these goals, the utility model provides following technical scheme:
A kind of automatic excitation adjustor of generator detecting system, including field regulator device, emulation interface equipment and imitative in real time True device, the real-time simulation apparatus is connected by the emulation interface equipment with field regulator device, the adjustment of field excitation Device device includes field regulator master control system and field regulator analog quantity sampling plate, and the field regulator analog quantity is adopted Model is connected with emulation interface equipment, field regulator master control system respectively, and field regulator analog quantity sampling plate is direct By the small voltage signal output collected from emulation interface equipment to field regulator master control system.
It is preferred that, the field regulator device also includes digital quantity input/output board, the digital quantity input/output board It is connected respectively with emulation interface equipment, field regulator master control system, and digital quantity input/output board is directly in emulation interface Small voltage signal is transmitted between equipment and field regulator master control system.
It is preferred that, the field regulator device also includes excitation con-trol amount output board, the excitation con-trol amount output board It is connected respectively with emulation interface equipment, field regulator master control system, and excitation con-trol amount output board is by field regulator master The analog quantity of control system output is directly output to emulation interface equipment.
It is preferred that, the field regulator analog quantity sampling plate includes synchronizing voltage Acquisition Circuit, and the synchronizing voltage is adopted Collector includes the two stage filter circuit for being connected to emulation interface equipment, and the two stage filter circuit is using the filter for adapting to small voltage Ripple electric capacity and resistance.
It is preferred that, the field regulator analog quantity sampling plate includes set end voltage/frequency collection circuit, the generator terminal electricity Pressure/frequency collection circuit includes the filter circuit for being connected to emulation interface equipment, and the filter circuit is using adaptation small voltage Filter capacitor and resistance.
It is preferred that, the field regulator analog quantity sampling plate includes exciting current Acquisition Circuit, and the exciting current is adopted The input of collector includes the resistance and diode for being connected to emulation interface equipment, the output of the exciting current Acquisition Circuit End includes connecting resistance between the two outputs.
It is preferred that, the field regulator analog quantity sampling plate includes generator terminal current collection circuit, and the generator terminal electric current is adopted Sample circuit includes 3 groups of sample circuits for corresponding to generator terminal three-phase current respectively.
It is preferred that, every group of sample circuit includes two inputs, and two partial pressures are connected between two inputs The diode of a pair of Opposite direction connections is parallel with resistance, one of divider resistance.
In the automatic excitation adjustor of generator detecting system that the utility model is provided, field regulator device is provided with, is emulated Interface equipment, real-time simulation apparatus, for the static characteristic of automatic excitation adjustor of generator, no-load characteristic, load characteristic, electric power System stabilizer control characteristic etc. is tested, and can simulate the different operating conditions of power system and adjustment of field excitation in the case of failure The dynamic property of device, safety, the accurate, performance of effective detection automatic excitation adjustor of generator.
And it is real-time that the automatic excitation adjustor of generator detecting system that the utility model is provided realizes that emulator is directly sent out Small voltage signal gives field regulator device, cancels reception of the power amplifier to signal, the amplification of original circuit intermediate link And transmission.Because equipment connection uses small-signal form, equipment connection is simple, test operation safety, can accurately, effective detection Whether the performance of automatic excitation adjustor of generator meets the requirement of system stable operation, reduces because of the mistake that power amplifier is introduced Difference.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes one of the present utility model Point, schematic description and description of the present utility model is used to explain the utility model, does not constitute to of the present utility model It is improper to limit.In the accompanying drawings:
Fig. 1 is the block diagram representation of automatic excitation adjustor of generator detecting system in the utility model embodiment.
Fig. 2 is the connection diagram of field regulator analog quantity sampling plate in the utility model embodiment.
Fig. 3 is synchronizing voltage Acquisition Circuit Curve guide impeller figure in the utility model embodiment.
Fig. 4 is set end voltage/frequency collection circuits improvement design drawing in the utility model embodiment.
Fig. 5 is exciting current Acquisition Circuit Curve guide impeller figure in the utility model embodiment.
Fig. 6 is generator terminal current collection circuit Curve guide impeller figure in the utility model embodiment.
Connection diagram inside real-time simulation apparatus in Fig. 7 the utility model embodiments.
The connection diagram of interface equipment in Fig. 8 the utility model embodiments.
Embodiment
In order to further illustrate the automatic excitation adjustor of generator detecting system of the utility model embodiment offer, with reference to Figure of description is described in detail.
The utility model embodiment provides a kind of automatic excitation adjustor of generator detecting system, as shown in figure 1, the detecting system Including field regulator device 100, emulation interface equipment 200 and real-time simulation apparatus 300, the real-time simulation apparatus 300 leads to Cross the emulation interface equipment 200 to be connected with field regulator device 100, the field regulator device 100 includes Excitation Adjustment Save device master control system 110 and field regulator analog quantity sampling plate 120,120 points of the field regulator analog quantity sampling plate It is not connected with emulation interface equipment 200, field regulator master control system 110, and field regulator analog quantity sampling plate 120 is straight The small voltage signal output that to be collected from emulation interface equipment 200 is connect to field regulator master control system 110.Wherein emulate Interface equipment 200 is bi-directionally connected with field regulator device 100 and power system real-time simulation equipment 300 respectively.
The automatic excitation adjustor of generator detecting system that the utility model is provided realizes that emulator directly sends out small electricity in real time Pressure signal gives field regulator device, cancels reception of the power amplifier to signal, amplification and biography of original circuit intermediate link It is defeated.Because equipment connection uses small-signal form, equipment connection is simple, test operation safety, can accurately, effective detection generating Whether the performance of machine field regulator meets the requirement of system stable operation, reduces because of the error that power amplifier is introduced.
As shown in figure 1, the field regulator device 100 in the utility model embodiment also includes digital quantity input/output board 140, the digital quantity input/output board 140 is connected with emulation interface equipment 200, field regulator master control system 110 respectively, And digital quantity input/output board 140 directly transmitted between emulation interface equipment 200 and field regulator master control system 110 it is small Voltage signal.
As shown in figure 1, the field regulator device 100 in the utility model embodiment also includes excitation con-trol amount output board 130, the excitation con-trol amount output board 130 is connected with emulation interface equipment 200, field regulator master control system 110 respectively, And the analog quantity that excitation con-trol amount output board 130 exports field regulator master control system 110 is directly output to emulation interface Equipment 200.
Specifically, the first input end of field regulator master control system 110 and field regulator analog quantity sampling plate 120 output end connection, the first output end and the excitation con-trol amount output board 130 of field regulator master control system 110 are inputted End connection, field regulator master control system 110 is bi-directionally connected with digital quantity input/output board 140, field regulator analog quantity The input of sampling plate 120 is connected with the first output end of emulation interface equipment 200, the output of excitation con-trol amount output board 130 End is connected with the first input end of emulation interface equipment 200, digital quantity input/output board 140 and the two-way company of emulation interface equipment Connect.
The automatic excitation adjustor of generator detecting system that the utility model is provided, directly receives the mould of emulation interface equipment feeding Analog quantity:Synchronizing voltage, frequency, set end voltage, exciting current and stator current small-signal are by realizing based on inside field regulator Calculate and result of calculation is sent out into the input analog amount or state controlled quentity controlled variable for real-time apparatus for placing:Analog quantity passes through excitation con-trol Amount output board 130 is sent out to real-time simulation interface equipment 200, and digital quantity passes through digital quantity input/output board as control command 140 are sent out to emulation interface equipment 200.Field regulator and real-time simulation apparatus are realized without intermediate power amplifier, directly Connect by interface circuit and the interconnection of real-time simulation interface equipment, save experiment resource, it is to avoid put due to introducing middle power Big device equipment and the signal errors caused.
Refer to adjustment of field excitation in accompanying drawing 2, the automatic excitation adjustor of generator detecting system that the utility model embodiment is provided Device analog quantity sampling plate 120 specifically includes synchronizing voltage Acquisition Circuit 121, set end voltage/frequency collection circuit 122, excitation electricity Flow Acquisition Circuit 123, generator terminal current collection circuit 124.
As shown in figure 3, synchronizing voltage Acquisition Circuit includes being connected to emulation interface equipment in the utility model embodiment Two stage filter circuit, the two stage filter circuit using adapt to small voltage filter capacitor (C22, C23) and resistance (R16, R20)。
Synchronous voltage signal is realized as Site Detection value by amplifying circuit in the prior art, really 52V, and this Utility model embodiment, which provides automatic excitation adjustor of generator dynamic property detection means, is used for laboratory, the specified set end voltage of correspondence When there was only 8V, using synchronizing voltage Acquisition Circuit of the prior art, phase of the brownout for synchronizing signal filter circuit Measurement influence is very big, introduces measurement error.For this utility model embodiment two stage filter resistance and capacitance parameter again Match somebody with somebody, change resistance capacitance element, adapt to small voltage signal.
As shown in figure 4, set end voltage/frequency collection circuit is set including being connected to emulation interface in the utility model embodiment Standby filter circuit, the filter circuit is using the filter capacitor and resistance for adapting to small voltage.Frequency measurement is using generator terminal electricity The mode of frequency measurement is pressed, frequency-survey loop used and set end voltage measuring loop are the same circuits.Set end voltage volume of the prior art The corresponding secondary side voltage of definite value is 100V, and the utility model embodiment provides the detection of automatic excitation adjustor of generator dynamic property Device is used for laboratory, and the corresponding secondary side magnitude of voltage in laboratory is 8V, and brownout is for field regulator unit simulation amount Collection plate collection set end voltage measurer has an impact, and introduces measurement error.Generator is provided in order to adapt to the utility model embodiment Field regulator dynamic property detection means needs in laboratory simulations, by the resistance in Fig. 4 set end voltages/frequency collection circuit R26 and R68 proportionally reduce resistance value, redesign circuit.
Refering to accompanying drawing 5, the input of the utility model embodiment exciting current Acquisition Circuit includes being connected to emulation interface The resistance R24 and diode of equipment, the output end of the exciting current Acquisition Circuit include connecting between the two outputs Resistance R25.Prior art is the three-phase ac signal that direct receiving power amplifier is sent out, and is believed three-phase alternating current using transformer Three-phase low current number is transformed into, output is rectified into DC quantity small-signal by diode rectifier circuit, and the utility model is provided Automatic excitation adjustor of generator dynamic property detection means directly using DC voltage value transmit current signal, save power amplifier will believe Number amplification, signal enters collection plate, and Current Transformer is transformed into low current again, then is rectified into the process of DC small signal, it is to avoid The signal errors of transfer process.
Refering to accompanying drawing 6, the utility model embodiment generator terminal current sampling circuit includes 3 groups and corresponds to generator terminal three-phase current respectively Sample circuit, respectively correspond to each phase generator terminal electric current sampled.Every group of sample circuit includes two inputs, and two defeated Enter to be connected with two divider resistances, one of divider resistance (R33, R86, R87) between holding and be parallel with a pair of Opposite direction connections Diode (V1-V6).The electric current of Current Transformer Secondary side is directly gathered in the prior art, into field regulator analog quantity High current is become into low current through 3-phase power converter after sampling plate, the ohmically voltage signal in 500 Europe is flowed through using low current As generator terminal current sampling signal, and the automatic excitation adjustor of generator dynamic property detection means that the utility model is provided is used in fact Test room and electric current is directly transmitted using magnitude of voltage, eliminate original power amplifier apparatus, the former circuit for measuring electric current is concatenated Divider resistance, direct measurement secondary side exit potential, is used as generator terminal current sampling data.Signal is avoided under laboratory environment through work( Rate amplifier amplifies, diminish the process of re-sampling by current transformer again, it is to avoid the error that signal conversion is brought.
Accompanying drawing 7 is referred to, the automatic excitation adjustor of generator simulation detection apparatus that the utility model embodiment is provided includes imitative True interface equipment 200 and real-time simulation apparatus 300, the emulation interface equipment 200 respectively with field regulator device 100 and real When simulator 300 be bi-directionally connected, in the real-time simulation apparatus provided with generator simulator 320, generator terminal breaker emulate Device 310, generator terminal step-up transformer simulator 330, transmission line of electricity simulator 340 and equivalent network simulator 350;
Generator simulator 320 and generator terminal the breaker simulator 310 is bi-directionally connected with interface equipment 20, and The generator simulator 320 is bi-directionally connected with the generator terminal breaker simulator 310, the generator terminal breaker emulation dress 310 are put to be bi-directionally connected with the generator terminal step-up transformer simulator 330, the generator terminal step-up transformer simulator 330 with The circuit emulation device 340 is bi-directionally connected, described circuit emulation device 340 and the equivalent network simulator 350 pairs To connection.
Generator simulator 320, generator terminal breaker simulator 330 are by generator synchronizing voltage, set end voltage, generating Machine exciting current, stator current and generator terminal circuit breaker position signal send adjustment of field excitation to be detected to by interface equipment 200 Device device 100, field regulator device 100 calculates Analog control signal according to Generator Status information by internal PID Send generator simulator 30 to, realize field regulator to generator excitation state and generator terminal by such closed-loop control The control of voltage.
In the automatic excitation adjustor of generator simulation detection apparatus that the utility model is provided, realize that emulator passes through generator Simulator, generator terminal breaker simulator, generator terminal step-up transformer simulator, transmission line of electricity simulator and equivalent network Simulator is capable of the actual operating mode of effective simulated grid, so as to be detected to field regulator to be detected, No longer need to access real generator and other power network primary equipments carry out detection experiment, and can safely, accurately, effectively Whether the dynamic property of detection automatic excitation adjustor of generator meets the requirement of system stable operation, reduces testing cost, improves Detection efficiency.
Accompanying drawing 8 is referred to, emulation interface equipment 200 is used to connect emulator and field regulator 100 to be detected, real The information transfer at existing two ends.Emulation interface equipment described in the utility model embodiment includes kilomegabit High Speed Analog amount output card GTAO, High Speed Analog amount input unit GTAI, high-speed figure amount output card GTDO;Interface equipment high speed analog output unit GTAO is the High Speed Analog amount output card using kilomegabit as measurement unit, and high-speed figure amount output card GTDO is using kilomegabit to count The high-speed figure amount output card of unit is measured, High Speed Analog amount input card GTAI is the High Speed Analog amount using kilomegabit as measurement unit Input card, so, the high speed referred in the present embodiment is referred both to using kilomegabit as measurement unit.
The output end of generator simulator 320 is connected with High Speed Analog amount output card GTAO 210 input, at a high speed Analog output unit GTAO 210 output end is connected with the first input end of excitation system adjuster device 100 to be detected, The output end of field regulator 100 to be detected is connected with High Speed Analog amount input card GTAI 220 input, High Speed Analog Amount input card GTAI 220 output end is connected with the input of generator simulator 320, generator terminal breaker simulator 310 Output end be connected with high-speed figure amount output card GTDO 230 input, high-speed figure amount output card GTDO 230 output End is connected with the second input of excitation system adjuster device 100 to be detected.
The input of generator simulator 320 is connected with High Speed Analog amount output card GTAO 210 input, will be sent out Motor set end voltage, stator current, exciting current, synchronizing voltage with small-signal (5V-10V electric signals) form through passage export to The analog acquisition plate 120 of excitation system adjuster device.
The output end of generator terminal breaker simulator 310 is connected with high-speed figure amount output card GTDO 230 input, High-speed figure amount output card GTDO 230 output end is connected with the input of excitation system adjuster device to be detected.Generator terminal Breaker sends current generator terminal circuit-breaker status to high-speed figure amount output card GTDO 230, high-speed figure in digital form Measure output card GTDO to send out the position signalling of 24V electric signals as generator terminal breaker by passage, be converted to by relay Received after space nodes signal by the digital quantity input/output board 140 of excitation system adjuster device 100.
The output end of excitation system adjuster device 100 is connected with High Speed Analog amount input card GTAI 220 input, High Speed Analog amount input card GTAI 220 is connected with generator simulator 320.Excitation system adjuster device 100 passes through excitation Controlled quentity controlled variable output board 130 sends adjustment of field excitation control signal to High Speed Analog amount with 0-10V electrical signal form by passage The adjustment of field excitation control signal is given generator by input card GTAI 220, High Speed Analog amount input card GTAI 220 by passage Simulator 320, generator simulator gather after the 0-10V electric signals by conversion become actual control generator excitation Excitation voltage signal gives generator model, and generator controls set end voltage, realize generator according to excitation voltage signal is received Excitation con-trol.
In the description of above-mentioned embodiment, specific features, structure, material or feature can be in any one or many Combined in an appropriate manner in individual embodiment or example.
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to In this, any one skilled in the art can readily occur in change in the technical scope that the utility model is disclosed Or replace, it should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with the power The protection domain that profit is required is defined.

Claims (8)

1. a kind of automatic excitation adjustor of generator detecting system, including field regulator device, emulation interface equipment and real-time simulation Device, the real-time simulation apparatus is connected by the emulation interface equipment with field regulator device, it is characterised in that described Field regulator device includes field regulator master control system and field regulator analog quantity sampling plate, the field regulator Analog quantity sampling plate is connected with emulation interface equipment, field regulator master control system respectively, and field regulator analog quantity is adopted Model is directly by the small voltage signal output collected from emulation interface equipment to field regulator master control system.
2. automatic excitation adjustor of generator detecting system according to claim 1, it is characterised in that the field regulator dress Put also include digital quantity input/output board, the digital quantity input/output board respectively with emulation interface equipment, field regulator master Control system is connected, and digital quantity input/output board is directly passed between emulation interface equipment and field regulator master control system Defeated small voltage signal.
3. automatic excitation adjustor of generator detecting system according to claim 1, it is characterised in that the field regulator dress Put also include excitation con-trol amount output board, the excitation con-trol amount output board respectively with emulation interface equipment, field regulator master Control system is connected, and the analog quantity that field regulator master control system is exported is directly output to imitate by excitation con-trol amount output board True interface equipment.
4. automatic excitation adjustor of generator detecting system according to claim 1, it is characterised in that the field regulator mould Analog quantity sampling plate includes synchronizing voltage Acquisition Circuit, and the synchronizing voltage Acquisition Circuit includes being connected to the two of emulation interface equipment Level filter circuit, the two stage filter circuit is using the filter capacitor and resistance for adapting to small voltage.
5. automatic excitation adjustor of generator detecting system according to claim 1, it is characterised in that the field regulator mould Analog quantity sampling plate includes set end voltage/frequency collection circuit, and the set end voltage/frequency collection circuit connects including being connected to emulation The filter circuit of jaws equipment, the filter circuit is using the filter capacitor and resistance for adapting to small voltage.
6. automatic excitation adjustor of generator detecting system according to claim 1, it is characterised in that the field regulator mould Analog quantity sampling plate includes exciting current Acquisition Circuit, and the input of the exciting current Acquisition Circuit connects including being connected to emulation The resistance and diode of jaws equipment, the output end of the exciting current Acquisition Circuit include the electricity of connection between the two outputs Resistance.
7. automatic excitation adjustor of generator detecting system according to claim 1, it is characterised in that the field regulator mould Analog quantity sampling plate includes generator terminal current collection circuit, and the generator terminal current sampling circuit includes 3 groups and corresponds to generator terminal three-phase electricity respectively The sample circuit of stream.
8. automatic excitation adjustor of generator detecting system according to claim 7, it is characterised in that sample circuit described in every group One is parallel with including being connected between two inputs, and two inputs on two divider resistances, one of divider resistance To the diode of Opposite direction connection.
CN201720068682.9U 2017-01-18 2017-01-18 Generator excitation regulator detecting system Active CN206573688U (en)

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Application Number Priority Date Filing Date Title
CN201720068682.9U CN206573688U (en) 2017-01-18 2017-01-18 Generator excitation regulator detecting system

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Publication Number Publication Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108333507A (en) * 2017-01-18 2018-07-27 南方电网科学研究院有限责任公司 Generator excitation regulator detecting system
CN110488191A (en) * 2019-09-12 2019-11-22 岭澳核电有限公司 Nuclear power plant's emergency diesel dynamo off-line testing system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108333507A (en) * 2017-01-18 2018-07-27 南方电网科学研究院有限责任公司 Generator excitation regulator detecting system
CN108333507B (en) * 2017-01-18 2020-11-03 南方电网科学研究院有限责任公司 Generator excitation regulator detecting system
CN110488191A (en) * 2019-09-12 2019-11-22 岭澳核电有限公司 Nuclear power plant's emergency diesel dynamo off-line testing system

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