CN206945842U - A kind of distribution reactive power compensator analogue test platform - Google Patents
A kind of distribution reactive power compensator analogue test platform Download PDFInfo
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- CN206945842U CN206945842U CN201720526562.9U CN201720526562U CN206945842U CN 206945842 U CN206945842 U CN 206945842U CN 201720526562 U CN201720526562 U CN 201720526562U CN 206945842 U CN206945842 U CN 206945842U
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Abstract
It the utility model is related to a kind of distribution reactive power compensator analogue test platform, operational shock and the test of noise under harmonic environment are carried out to distribution net equipment, including high-voltage large-capacity Harmonic Current system, experiment reactive power compensator and experiment work and analytical equipment, wherein, the high-voltage large-capacity Harmonic Current system, it is connected with distribution net equipment to be tested, for producing harmonic wave；The experiment reactive power compensator, high-voltage large-capacity Harmonic Current system and distribution net equipment to be tested are connected respectively, supporting, the power back-off in being tested for realization is formed with distribution net equipment to be tested；The experiment work and analytical equipment, for controlling the operation of high-voltage large-capacity Harmonic Current system, the test data of distribution net equipment to be tested is gathered, and according to Test data generation analysis report.Compared with prior art, the utility model can carry out the operational shock and noise testing under harmonic environment to distribution net equipment, have the advantages that operational reliability is high, safe.
Description
Technical field
Distribution reactive power compensation technology field is the utility model is related to, is simulated more particularly, to a kind of distribution reactive power compensator
Test platform.
Background technology
For existing urban distribution network, extra-high voltage alternating current-direct current mixing bulk power grid builds transition period " tetanic weak friendship " electricity
Network operation characteristic and send receiving end power network to influence each other, huge choose is brought to distribution net equipment or even whole power network safety operation
War.
Shanghai Power Network is there occurs a lot of 10kV reactive-load compensation equipments abnormal sound defects in recent years, such as money country fair station capacitor panel was once
Find that noise is abnormal in power transmission, vibration is quite serious, and detection noise reaches 85 decibels, more than the operation sound of 35 kilovolts of main transformers
Sound, transformer station's normal operation is impacted.Through analysis assert such defect with mains by harmonics caused by vibration equipment it is abnormal
It is relevant.Although technical protocol to this kind equipment define vibration and noise level, due to harmonic wave have unintentional nonlinearity,
The features such as randomness, distributivity, non-stationary and influence factor complexity, either delivery test or scene handing-over examination
Test, vibration and noise that can only be under fundamental wave environment to equipment be examined, and cause the abnormal sound defect under harmonic wave to be difficult to send out in time
It is existing.
At present power equipment noise and vibration detection mainly for voltage levels master network equipment, to the pass of distribution net equipment
Note it is less, there is no at present carry out distribution net equipment harmonic wave under runnability test related hardware facility, be limited to current experiment
Condition, can not be vibrated under each rahmonic to equipment and noise is examined；Furthermore distribution reactive-load compensation equipment model is various, mesh
Before there is no the stronger detection scheme of versatility.After distribution net equipment abnormal sound defect is found in putting equipment in service more, at present to abnormal sound occurs
Distribution reactive-load compensation equipment generally use integral replacing treatment measures, its purchase, installation, debugging cycle it is longer, it is often right
Capital construction progress, the production schedule adversely affect, and economy is poor.
Utility model content
The purpose of this utility model is exactly idle in order to provide a kind of distribution the defects of overcoming above-mentioned prior art to exist
Compensation device analogue test platform.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of distribution reactive power compensator analogue test platform, operational shock under harmonic environment is carried out to distribution net equipment and is made an uproar
The test of sound, including high-voltage large-capacity Harmonic Current system, experiment reactive power compensator and experiment work and analytical equipment, its
In,
The high-voltage large-capacity Harmonic Current system, is connected with distribution net equipment to be tested, for producing harmonic wave；
The experiment reactive power compensator, high-voltage large-capacity Harmonic Current system and distribution net equipment to be tested are connected respectively,
Supporting, the power back-off in being tested for realization is formed with distribution net equipment to be tested；
The experiment work and analytical equipment, high-voltage large-capacity Harmonic Current system and distribution net equipment to be tested are connected respectively,
For controlling the operation of high-voltage large-capacity Harmonic Current system, the test data of distribution net equipment to be tested is gathered, and according to described
Test data generation analysis report.
The high-voltage large-capacity Harmonic Current system includes phase-shifting transformer cabinet, power unit cabinet and input switch cabinet, institute
The input for stating phase-shifting transformer cabinet is connected by input switch cabinet with net side distribution system, the output end of phase-shifting transformer cabinet with
Power unit cabinet is connected, and the power unit cabinet is connected with distribution net equipment to be tested.
The phase-shifting transformer cabinet includes phase-shifting transformer and the transformer temperature being connected with phase-shifting transformer monitoring
Controller, the transformer temperature monitor controller are connected with experiment work and analytical equipment.
The power unit cabinet include multiple structures and electric parameter it is identical and series connection power cell, each power cell
Form high voltage and harmonic wave after output voltage overlapped in series, the output end after each power unit cascade is also associated with defeated
Go out wave filter.
The input switch cabinet includes disconnecting switch and the breaker being connected, the disconnecting switch and net side distribution system
Connection, the breaker connect phase-shifting transformer cabinet and experiment work and analytical equipment respectively.
The high-voltage large-capacity Harmonic Current system also includes buffer tank, the buffer tank connect respectively phase-shifting transformer cabinet and
Power unit cabinet, the charging of exciting current and power unit cabinet DC capacitor for reducing phase-shifting transformer cabinet energization moment
Electric current.
Experiment reactive power compensator includes compensation capacitor group, without partial discharge adjustable serial reactor group and/or
Without partial discharge adjustable compensation reactor group.
The experiment work and analytical equipment include portable Detecting Power Harmonicies device, operating console, Work in Place station and after
Platform work station, the portable Detecting Power Harmonicies device connect distribution net equipment and operating console to be tested, the operational control respectively
Platform is connected by RS422 connections with Work in Place station, and the Work in Place station passes through ICP/IP protocol and background work station phase
Even.
The operating console includes DSP+FPGA digital signal processing modules.
The platform also includes safety device.
Compared with prior art, the utility model has advantages below：
(1) the utility model analogue test platform can carry out the operational shock and noise survey under harmonic environment to distribution net equipment
Examination, can test its operation characteristic under harmonic environment, to make qualitative and qualitative assessment, so as to realize harmonic characterisitic to electricity
Power equipment influences and its experimental test and the research of tolerance, realizes and grasps harmonic wave ahead of time in the type selecting stage to distribution net equipment shadow
Ring, effectively preventing and treating due to type selecting it is improper caused by equipment abnormal sound defect generation, avoid the later stage change, installation etc. unnecessary branch
Go out, and the have a power failure load loss brought and social influence.
(2) the utility model produces harmonic wave using high-voltage large-capacity Harmonic Current system, and there is security performance height, efficiency to refer to
The characteristics of absolute altitude.
(3) there is the utility model high-voltage large-capacity Harmonic Current system dry-type high-voltage to isolate phase-shifting transformer, and three-phase is defeated
Go out high-voltage variable frequency power source and use 54 impulse commutations, voltage on line side waveform can be greatly improved, effectively suppress harmonic wave, significantly improve electricity
The operational reliability of source system, improve the quality of net side power supply；Being provided with transformer temperature monitor controller simultaneously can become
During depressor failure, operating console is given feedback of the information in time, so as to ensure the reliability service of transformer.
(4) the utility model high-voltage large-capacity Harmonic Current system has input switch cabinet, it is possible to achieve input side is matched somebody with somebody
Electrical communication, shut-off between electric system and the phase-shifting transformer in transformer case improve operational reliability and safety with isolating
Property.
(5) the utility model is provided with experiment reactive power compensator, and can conveniently carry out power back-off reduces whole experiment
The power of system, and compensate electricity with compensation capacitor group, without partial discharge adjustable serial reactor group and/or without partial discharge adjustable
The plurality of optional equipment such as anti-device group.
(6) the utility model uses portable Detecting Power Harmonicies device, can conveniently realize the real-time monitoring of a variety of operational factors, carry
High test reliability.
(7) the utility model is provided with safety device, safe.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model high-voltage large-capacity Harmonic Current system；
Fig. 3 is the connection diagram of utility model works station and console.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical scheme, give detailed embodiment and specific operating process, but guarantor of the present utility model
Shield scope is not limited to following embodiments.
As shown in figure 1, the present embodiment provides a kind of distribution reactive power compensator analogue test platform, distribution net equipment is carried out
Operational shock and the test of noise under harmonic environment, including high-voltage large-capacity Harmonic Current system 1, experiment reactive power compensator
2 and experiment work and analytical equipment 3, wherein, high-voltage large-capacity Harmonic Current system 1 is connected with distribution net equipment 4 to be tested, is used for
Produce harmonic wave；Experiment connects high-voltage large-capacity Harmonic Current system 1 and distribution net equipment to be tested 4 respectively with reactive power compensator 2,
Supporting, the power back-off in being tested for realization is formed with distribution net equipment 4 to be tested；Experiment work and analytical equipment 3 connect respectively
High-voltage large-capacity Harmonic Current system 1 and distribution net equipment to be tested 4 are connect, for controlling high-voltage large-capacity Harmonic Current system 1
Operation, the test data of distribution net equipment 4 to be tested is gathered, and according to Test data generation analysis report.
First, high-voltage large-capacity Harmonic Current system
High-voltage large-capacity Harmonic Current system 1 includes phase-shifting transformer cabinet, power unit cabinet and input switch cabinet, and phase shift becomes
The input of depressor cabinet is connected by input switch cabinet with net side distribution system, the output end and power cell of phase-shifting transformer cabinet
Cabinet is connected, and power unit cabinet is connected with distribution net equipment to be tested, as shown in Figure 2.
(1) phase-shifting transformer cabinet
Phase-shifting transformer cabinet includes phase-shifting transformer and the transformer temperature monitor controller being connected with phase-shifting transformer, becomes
Depressor temperature monitor and control device is connected with experiment work and analytical equipment.
In the present embodiment, phase-shifting transformer is that dry-type high-voltage isolates phase-shifting transformer, and three-phase output high-voltage variable frequency power source is adopted
With 54 impulse commutations, voltage on line side waveform can be greatly improved, effectively suppresses harmonic wave, significantly improve the reliable of power-supply system
Property.Transformer temperature monitor controller gives switch board, so as to ensure transformation feedback of the information in time in transformer fault simultaneously
The reliability service of device.
Phase-shifting transformer TM three-phases 380V is inputted, and exports 18 three-phase windings (voltage 690V), and each two is one group, and totally 9
Group.Voltage phase difference is that two three-phase windings structures are identical in 6.67 °, same group between adjacent sets, and output voltage phase is consistent.Cause
There is certain phase difference, so each power cell independence rectification (i.e. phase-shifting commutation), it is possible to eliminate power network then between each group
(input) harmonic current caused by because of rectifying device work in unit, the total harmonic distortion (THD) of input current is extremely low, remote small
In the requirement that national standard allows, and can keep be approximately 1 input power factor, greatly improve the matter of net side power supply
Amount, to power network almost no-harmonic wave pollution, the work of the other power loads of same network segment is not influenceed.
(2) power unit cabinet
Power unit cabinet include multiple structures and electric parameter it is identical and series connection power cell, the output of each power cell
Form high voltage and harmonic wave after Voltage Series superposition, the output end after each power unit cascade is also associated with output filter
Ripple device, output waveform can be made to become more smooth, filter out higher harmonic components.
Power unit cabinet is the core of system power circuit, and each power cell is three-phase input, single-phase output
Low-voltage variable frequency power supply, mainly complete rectification, filtering, shifting inversion, the function such as Communication Control.
Power cell is mainly by rectification circuit, inverter circuit, control circuit, drive circuit, failure detector circuit, communication electricity
Road, indicating circuit etc. form.The three-phase alternating-current supply rectification that transformer secondary winding provides is by the rectification circuit of power cell
The dc source of pulsation, after the electrochemical capacitor filtering of excess capacity, relatively stable dc source (dc bus can be obtained
Voltage).SPWM controls are carried out by the bridge type inverse electric current that is formed to IGBT, can obtain the single-phase of equivalent sine and harmonic superposition
Exchange output.The radiating of IGBT constant power devices uses advanced efficient heat pipe heat radiation technology, significantly increases the work of power device
Make security reliability.In addition, each power cell can show itself working condition and fault message etc..When power cell is sent out
Signal will be sent to experiment work and analytical equipment after raw failure, experiment work and analytical equipment will be handled timely.
Power cell uses modularized design, and structurally and electrically performance is completely the same, possesses versatility, is used interchangeably.
(3) input switch cabinet
Input switch cabinet includes the disconnecting switch being connected and breaker, disconnecting switch are connected with net side distribution system, breaks
Road device connects phase-shifting transformer cabinet and experiment work and analytical equipment respectively, realizes in the distribution system and transformer case of input side
Phase-shifting transformer between electrical communication, shut-off is with isolating.
(4) buffer tank
High-voltage large-capacity Harmonic Current system can also include buffer tank, the buffer tank connect respectively phase-shifting transformer cabinet and
Power unit cabinet, the charging of exciting current and power unit cabinet DC capacitor for reducing phase-shifting transformer cabinet energization moment
Electric current, avoid causing level power supply fast tripping protection device action, reduce the rush of current to input side power distribution network.Startup finishes
Afterwards, buffer tank will start resistance by vacuum contactor and bypass.
2nd, experiment reactive power compensator
To ensure the experiment of reactive apparatus, need to configure the whole pilot system of compensation device progress power back-off reduction in experiment
Power, consider the difference of test item, experiment reactive power compensator 2 may include compensation capacitor group, without the adjustable string of partial discharge
Join reactor group and/or without partial discharge adjustable compensation reactor group.
Compensation capacitor group is mainly used in test item when being current-limiting reactor, and subject string is anti-collectively constitutes loop, simulates
Anti- actual operating mode is gone here and there, to going here and there the anti-vibration carried out under harmonic wave and noise is examined.
The string for being mainly used in simulation test different capabilities and reactance Rate without partial discharge adjustable serial reactor group resists, all kinds of
Vibration and noise characteristic under harmonic wave, timely discovering device abnormal sound defect can be before equipment networks or even at the beginning of design selection just
Consider influence of the mains by harmonics to 10kV equipment, grasp harmonic effects ahead of time, effectively prevent and treat the generation of equipment abnormal sound defect.
In view of the input power capacity of whole pilot system, when test product capacitive load is larger, system input power without
Method provides excessive reactive power, need to configure adjustable compensating reactor and capacity current is compensated, lifting test system
Power factor, reduce the output of experiment power supply system.
3rd, experiment work and analytical equipment
Experiment work and analytical equipment 3 include portable Detecting Power Harmonicies device, operating console, Work in Place station and backstage work
Stand, as shown in figure 3, portable Detecting Power Harmonicies device connects distribution net equipment and operating console to be tested, operating console respectively
It is connected by RS422 connections with Work in Place station, Work in Place station is connected by ICP/IP protocol with background work station.
(1) portable Detecting Power Harmonicies device
Portable Detecting Power Harmonicies device can comprehensively monitor mains frequency, three-phase fundamental voltage, current effective value, fundamental active
Power, reactive power, power factor, phase, voltage deviation, frequency departure, non-equilibrium among three phase voltages, three-phase current unbalance
Degree, negative sequence voltage, electric current；Deng indices；Monitor harmonic wave (3~50 times)：Total harmonic distortion factor, each including voltage, electric current
Subharmonic containing ratio, amplitude, phase etc..Fundamental voltage error：± 0.2%, voltage deviation error：± 0.2%, fundamental current misses
Difference：± 0.5%, frequency departure error：± 0.01Hz, tri-phase unbalance factor：Voltage unbalance factor absolute error 0.2%, electric current
Degree of unbalancedness absolute error 1%, each order components 0.5% of voltage, electric current, voltage pulsation measurement error：± 5%, flicker measurement misses
Difference：± 5%, the harmonic wave degree of accuracy reaches A levels.
Portable Detecting Power Harmonicies device uses DSP+ARM9 as core, and there is DSP extremely strong data-handling capacity to be used for completing
The collection and calculating of data, hardcore are in advanced international level.ARM9 is used for carrying out the statistics of data, display, storage, pressed
Key, communication and alarm trip avoidance function.Advanced language should be used as software platform, whole softwares using embedded real-time operating system
Speech programming, ensures the high reliability of system and high transplantability.
Portable Detecting Power Harmonicies device should be able to real-time display Detecting Power Harmonicies index data.Long-time stored record work(can be achieved
Can, SD card built in device can preserve in real time to fundamental surveillance index and advanced monitoring index.Holding time considered according to 1 year.
Portable Detecting Power Harmonicies device should be able to provide various communication interfaces mode, realize the real-time Transmission or fixed of Monitoring Data
When extract stored record, can by EPA interface and console communication, also can by RS232C/RS485 interfaces, with
GPRS modes (customization) communicate with a distant place.
Portable Detecting Power Harmonicies device should meet national standard A level instrument requirements.Part of data acquisition should use no less than 8 passages,
16 high-speed a/d converters of synchronized sampling, acquisition precision is high, the requirement that measured precision is up to state standards.
(2) operating console and work station
Operating console includes DSP+FPGA digital signal processing modules, dramatically improves the control accuracy and sound of device
Answer speed.Operating console can user Local or Remote operation and setting, voltage in acquisition system, current-mode analog quantity and
Each switching value, logical operation and processing are carried out, controls the action of power cell, realize the control institute of voltage regulation and frequency modulation exporting country specified
There are division operation and the contact feedback of breaker；The signals such as monitoring control power supply, cabinet door closure, transformer temperature alarm；Control
Shield the light on and off of cabinet indicator lamp, detect the state of scram button.
Work station is divided into Work in Place station and background work station two parts.Work in Place station undertake signal recording function and with
422 communications of controller, are connected with operating console by RS422, are connected by ICP/IP protocol with background work station, on the spot
16 road high-speed data acquisition cards of work station interpolation pci bus；Insert 485/422 serial port board.Background work station by TCP/IP with
Work in Place station is connected, and undertakes man-machine interface, recording signal operation and display, failure logging, background communication, startup, shutdown etc.
Control function.
(3) safety device
The platform may also include safety device.Safety device realizes various equipment, test item in pilot system
And the function of safety protection of testing crew, device protects noise reduction module by PLC system, electronic security(ELSEC) fence, test product and other are comprehensive
Protection module is closed to form.Device accesses monitoring modular, harmonic wave module and the feedback signal of test product and personnel protection facility simultaneously in real time
Analysis and distinguishing is carried out, reaches overall function of safety protection.
Preferred embodiment of the present utility model described in detail above.It should be appreciated that the ordinary skill people of this area
Member makes many modifications and variations without creative work can according to design of the present utility model.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality on the basis of existing technology according to design of the present utility model in domain
Available technical scheme is tested, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of distribution reactive power compensator analogue test platform, operational shock and noise under harmonic environment are carried out to distribution net equipment
Test, it is characterised in that including high-voltage large-capacity Harmonic Current system, experiment reactive power compensator and experiment work and point
Analysis apparatus, wherein,
The high-voltage large-capacity Harmonic Current system, is connected with distribution net equipment to be tested, for producing harmonic wave；
The experiment reactive power compensator, high-voltage large-capacity Harmonic Current system and distribution net equipment to be tested is connected respectively, with treating
Test distribution net equipment forms supporting, the power back-off in being tested for realization；
The experiment work and analytical equipment, high-voltage large-capacity Harmonic Current system and distribution net equipment to be tested are connected respectively, is used for
The operation of high-voltage large-capacity Harmonic Current system is controlled, gathers the test data of distribution net equipment to be tested, and according to the test
Data generate analysis report.
2. distribution reactive power compensator analogue test platform according to claim 1, it is characterised in that the high pressure great Rong
Amount Harmonic Current system includes phase-shifting transformer cabinet, power unit cabinet and input switch cabinet, the input of the phase-shifting transformer cabinet
End is connected by input switch cabinet with net side distribution system, and the output end of phase-shifting transformer cabinet is connected with power unit cabinet, described
Power unit cabinet is connected with distribution net equipment to be tested.
3. distribution reactive power compensator analogue test platform according to claim 2, it is characterised in that the phase shift transformation
Device cabinet includes phase-shifting transformer and the transformer temperature monitor controller being connected with the phase-shifting transformer, the transformer temperature
Monitor controller is connected with experiment work and analytical equipment.
4. distribution reactive power compensator analogue test platform according to claim 2, it is characterised in that the power cell
Cabinet includes multiple structures and electric parameter is identical and the power cell of series connection, shape after the output voltage overlapped in series of each power cell
Into high voltage and harmonic wave, the output end after each power unit cascade is also associated with output filter.
5. distribution reactive power compensator analogue test platform according to claim 2, it is characterised in that the input switch
Cabinet includes the disconnecting switch being connected and breaker, the disconnecting switch are connected with net side distribution system, the breaker difference
Connect phase-shifting transformer cabinet and experiment work and analytical equipment.
6. distribution reactive power compensator analogue test platform according to claim 2, it is characterised in that the high pressure great Rong
Amount Harmonic Current system also includes buffer tank, and the buffer tank connects phase-shifting transformer cabinet and power unit cabinet respectively, for reducing
The exciting current of phase-shifting transformer cabinet energization moment and the charging current of power unit cabinet DC capacitor.
7. distribution reactive power compensator analogue test platform according to claim 1, it is characterised in that the experiment nothing
Reactive power compensation installations include compensation capacitor group, without partial discharge adjustable serial reactor group and/or without partial discharge adjustable compensating reactance
Device group.
8. distribution reactive power compensator analogue test platform according to claim 1, it is characterised in that the experiment work
And analytical equipment includes portable Detecting Power Harmonicies device, operating console, Work in Place station and background work station, the movable type is humorous
Ripple monitor connects distribution net equipment and operating console to be tested respectively, and the operating console is by RS422 connections and just
Ground work station connection, the Work in Place station is connected by ICP/IP protocol with background work station.
9. distribution reactive power compensator analogue test platform according to claim 8, it is characterised in that the operational control
Platform includes DSP+FPGA digital signal processing modules.
10. distribution reactive power compensator analogue test platform according to claim 1, it is characterised in that the platform also wraps
Include safety device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720526562.9U CN206945842U (en) | 2017-05-12 | 2017-05-12 | A kind of distribution reactive power compensator analogue test platform |
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| CN201720526562.9U CN206945842U (en) | 2017-05-12 | 2017-05-12 | A kind of distribution reactive power compensator analogue test platform |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015084A (en) * | 2017-05-12 | 2017-08-04 | 国网上海市电力公司 | A kind of distribution reactive power compensator analogue test platform |
| CN112098750A (en) * | 2020-09-07 | 2020-12-18 | 国网新疆电力有限公司电力科学研究院 | Transformer dynamic thermal stability test device based on charging capacitor |
| CN117233556A (en) * | 2023-11-10 | 2023-12-15 | 西安高压电器研究院股份有限公司 | Overvoltage test system for high-voltage alternating-current capacitor |
-
2017
- 2017-05-12 CN CN201720526562.9U patent/CN206945842U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107015084A (en) * | 2017-05-12 | 2017-08-04 | 国网上海市电力公司 | A kind of distribution reactive power compensator analogue test platform |
| CN112098750A (en) * | 2020-09-07 | 2020-12-18 | 国网新疆电力有限公司电力科学研究院 | Transformer dynamic thermal stability test device based on charging capacitor |
| CN117233556A (en) * | 2023-11-10 | 2023-12-15 | 西安高压电器研究院股份有限公司 | Overvoltage test system for high-voltage alternating-current capacitor |
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