CN207067266U - A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system - Google Patents
A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system Download PDFInfo
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- CN207067266U CN207067266U CN201720724952.7U CN201720724952U CN207067266U CN 207067266 U CN207067266 U CN 207067266U CN 201720724952 U CN201720724952 U CN 201720724952U CN 207067266 U CN207067266 U CN 207067266U
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Abstract
A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system is the utility model is related to, including：Voltage dip generator, between auxiliary bus bar and frequency converter；Experimental test monitoring system, it is connected in parallel to the both ends of frequency converter；Adjustable fictitious load, located at the load end of frequency converter.Compared with prior art, the utility model is by high-voltage large-capacity fictitious load, solves the problems, such as that thermal power plant, transformer station's maintenance down phase inverter load side connect motor and can not normally can not tested caused by carry load work, has the advantages that easy to operate.
Description
Technical field
The low voltage crossing experimental technique of power system is the utility model is related to, more particularly, to a kind of 3000kVA grades
Large-capacity transducer low voltage crossing pilot system.
Background technology
Low voltage crossing refers to when external fault or disturbance cause subsidiary engine converter power supply primary voltage instantaneous, in short-term or long
When time reduces, in defined regulation of line voltage and time interval, associate power equipment should use reliably working mode, protect
Hinder the safe operation of supply object.Low voltage crossing experiment is the experiment whether detection device possesses low voltage ride-through capability.
Low voltage crossing experiment needs special purpose test equipment to carry out.Voltage Drop during by simulating actual production, examine
The service ability of relevant device under certain condition.
Voltage dip generator is to carry out one of required special purpose test equipment of low voltage crossing experiment.It can simulate reality
Voltage Drop when border produces.At present, voltage dip generator topological structure is substantially classified as 3 classes, i.e. impedance type voltage dip is sent out
Raw device, transformer type voltage dip generator and Technics of Power Electronic Conversion formula voltage dip generator.
It is currently applied to the frequency converter low-voltage ride-through testing system at scene, during experiment, voltage dip generator is serially connected in
The electrical source of power input circuit of frequency converter, the specified multiple of simulation 0.4kV auxiliary bus bars voltage transient variation to rated voltage, setting
After time reaches, voltage recovers to normal operating voltage.This method of testing has the following disadvantages：(1) thermoelectricity when due to experiment
Factory, transformer station are in the maintenance down phase, inverter load side connect motor can not normal carry load work, cause experiment not enter
OK；(2) what current experiment was directed to is all the frequency converter that voltage class is 380V or 660V, can not carry out higher voltage grade
Low voltage crossing is tested；(3) it is each independent that voltage, electric current, the equipment of waveform are measured, field connection complexity, is unfavorable for live examination
Test.
Utility model content
The purpose of this utility model is exactly to provide a kind of 3000kVA etc. the defects of overcoming above-mentioned prior art to exist
Level large-capacity transducer low voltage crossing pilot system.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system, including：
Voltage dip generator, between auxiliary bus bar and frequency converter；
Experimental test monitoring system, it is connected in parallel to the both ends of frequency converter；
Also include：
Adjustable fictitious load, located at the load end of frequency converter.
The fictitious load includes the resistive fictitious load of high-voltage large-capacity being connected with each other and high-voltage large-capacity perception simulation
Load.
The resistive fictitious load of high-voltage large-capacity includes the resistive fictitious load cabinet that 3 capacity are 800~1500kW.
The resistive fictitious load of high-voltage large-capacity includes the resistive fictitious load cabinet that 3 capacity are 1000kW.
The high-voltage large-capacity perception fictitious load includes the perceptual fictitious load unit that 3 capacity are 200~400kVA.
The high-voltage large-capacity perception fictitious load includes the perceptual fictitious load unit that 3 capacity are 300kVA.
The experimental test monitoring system uses integral type.
Compared with prior art, the utility model has advantages below：
1st, by high-voltage large-capacity fictitious load, thermal power plant, transformer station's maintenance down phase, inverter load side institute are solved
Connect the problem of motor can not normally can not be tested caused by carry load work.
2nd, by using automatic coupling voltage regulator formula voltage dip generator, realize and instantaneously pass through area, pass through Qu Hechi in short-term
The simulation of the continuous charge threshold level for passing through area.
3rd, voltage, electric current, waveform measurement and record are filled using the experimental test monitoring system of integral type, the monitoring system
Fusion is put in a set of equipment, makes field connection, more convenient operation.
4th, the capacity of fictitious load is up to 3000kVA, meets high-voltage large-capacity frequency conversion kind equipment low voltage ride-through capability
Assessing needs.
Brief description of the drawings
Fig. 1 is pilot system connection diagram of the present utility model.
Marked in figure：1st, voltage dip generator, 2, experimental test monitoring system, 3, fictitious load, 4, auxiliary bus bar, 5,
Frequency converter.
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, a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system, for connecting factory
Low voltage crossing experiment is carried out with the high voltage large capcity frequency converter 5 of bus 4, including：Voltage dip generator 1, located at station-service
Between bus 4 and frequency converter 5, Voltage Drop during for simulating actual production；Experimental test monitoring system 2, it is connected to frequency converter 5
Power end and load end, gather coherent signal, for monitoring test data；Adjustable fictitious load 3, located at frequency converter 5
Load end, the motor for the load end of analog inverter 5.
Wherein, the maximum of the capacity of fictitious load 3 is not less than 3000kVA, and fictitious load 3 can be born not less than 6kV's
Voltage, the maximum capacity that fictitious load 3 can simulate in the present embodiment is 3000kVA, and the rated voltage of fictitious load 3 is 6kV.It is logical
High-voltage large-capacity fictitious load 3 is crossed, solves thermal power plant, transformer station's maintenance down phase, the load-side of frequency converter 5 connects motor can not
The problem of can not being tested caused by normal carry load work.
Fictitious load 3 includes the resistive fictitious load of high-voltage large-capacity being connected with each other and high-voltage large-capacity perception simulation is negative
Carry.
Wherein, the resistive fictitious load of high-voltage large-capacity uses container-type, including 3 resistive fictitious load cabinets, its capacity
For 800~1500kW, the capacity of resistive fictitious load cabinet is 1000kW in the present embodiment.
Wherein, high-voltage large-capacity perception fictitious load includes 3 perceptual fictitious load units, and its capacity is 200~
400kVA, the capacity of perceptual fictitious load unit is 300kVA in the present embodiment.
Voltage dip generator 1 uses the portable voltage dip generator 1 based on automatic coupling voltage regulator principle.By using
Automatic coupling voltage regulator formula voltage dip generator 1, realize the instantaneous voltage critical for passing through area, passing through area in short-term and persistently passing through area
The simulation of value.
Experimental test monitoring system 2 uses integral type, for real-time display and records the power end of frequency converter 5 and load end
The data such as voltage, electric current, frequency, waveform, make field connection, more convenient operation.
During field test, automatic coupling voltage regulator formula voltage dip generator 1 is accessed to the power end of examining system, that is, is connected on
Between auxiliary bus bar 4 and frequency converter 5.Experimental test monitoring system 2 is connected to the power end and load end of frequency converter 5.Check nothing
Closed circuit switchs after by mistake, starts voltage dip generator 1, according to the different voltage-regulation auto-transformers of test requirements document, leads to
Overtesting test monitor system 2 monitors the situation of change of the voltage of each test point, electric current, frequency, waveform etc. in circuit.
Embodiment one
Tested with the application low voltage crossing pilot system, 1 specified electricity of automatic coupling voltage regulator formula voltage dip generator
Press as 6kV.After pilot system connects, by adjusting the different taps of auto-transformer, analog power primary voltage temporarily drops
20%, 60%, 90% grade to rated voltage, rated voltage is restored to after each shelves maintain 0.5s, 5s, 60s respectively.
The situation of change of the voltage of each test point, electric current, frequency, waveform etc. in circuit is monitored by experimental test monitoring system 2.
Embodiment two
, can be by mould by adjusting the tap of automatic coupling voltage regulator when being tested with the application low voltage crossing pilot system
Intend the magnitude of voltage that electric power incoming line voltage is adjusted to be more than rated voltage, such as the 130% of rated voltage, thus can be to frequency converter
5 carry out high voltage crossing experiment.
Claims (7)
1. a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system, including：
Voltage dip generator, between auxiliary bus bar and frequency converter；
Experimental test monitoring system, it is connected in parallel to the both ends of frequency converter；
Characterized in that, also include：
Adjustable fictitious load, located at the load end of frequency converter.
2. a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system according to claim 1, its feature
It is, the fictitious load includes the resistive fictitious load of high-voltage large-capacity being connected with each other and high-voltage large-capacity perception simulation is negative
Carry.
3. a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system according to claim 2, its feature
It is, the resistive fictitious load of high-voltage large-capacity includes the resistive fictitious load cabinet that 3 capacity are 800~1500kW.
4. a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system according to claim 2, its feature
It is, the resistive fictitious load of high-voltage large-capacity includes the resistive fictitious load cabinet that 3 capacity are 1000kW.
5. a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system according to claim 2, its feature
It is, the high-voltage large-capacity perception fictitious load includes the perceptual fictitious load unit that 3 capacity are 200~400kVA.
6. a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system according to claim 2, its feature
It is, the high-voltage large-capacity perception fictitious load includes the perceptual fictitious load unit that 3 capacity are 300kVA.
7. a kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system according to claim 1, its feature
It is, the experimental test monitoring system uses integral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720724952.7U CN207067266U (en) | 2017-06-21 | 2017-06-21 | A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720724952.7U CN207067266U (en) | 2017-06-21 | 2017-06-21 | A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207067266U true CN207067266U (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720724952.7U Active CN207067266U (en) | 2017-06-21 | 2017-06-21 | A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422202A (en) * | 2017-06-21 | 2017-12-01 | 上海赛璞乐电力科技有限公司 | A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system |
-
2017
- 2017-06-21 CN CN201720724952.7U patent/CN207067266U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422202A (en) * | 2017-06-21 | 2017-12-01 | 上海赛璞乐电力科技有限公司 | A kind of 3000kVA grades large-capacity transducer low voltage crossing pilot system |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190409 Address after: Room 1301, Building 430-1, Xujiahui Road, Huangpu District, Shanghai 200025 Co-patentee after: State Grid Shanghai Municipal Electric Power Company Patentee after: Shanghai Hengnengtai Enterprise Management Co., Ltd. Co-patentee after: East China Electric Power Test & Research Institute Co., Ltd. Address before: 200437 No. 171, Handan Road, Shanghai, Hongkou District Co-patentee before: State Grid Shanghai Municipal Electric Power Company Patentee before: Shanghai Sai Pu Le Power Technology Co. Ltd. Co-patentee before: East China Electric Power Test & Research Institute Co., Ltd. |