CN110133404A - Output signal analog device and secondary loading tests system - Google Patents
Output signal analog device and secondary loading tests system Download PDFInfo
- Publication number
- CN110133404A CN110133404A CN201910409610.XA CN201910409610A CN110133404A CN 110133404 A CN110133404 A CN 110133404A CN 201910409610 A CN201910409610 A CN 201910409610A CN 110133404 A CN110133404 A CN 110133404A
- Authority
- CN
- China
- Prior art keywords
- output
- module
- signal
- output end
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 230000001360 synchronised effect Effects 0.000 claims abstract description 23
- 230000002452 interceptive effect Effects 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 11
- 238000004088 simulation Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Rectifiers (AREA)
Abstract
Invention is related to power domain more particularly to output signal analog device and secondary loading tests system, output signal analog device, comprising: is connected to the AC rectification module of ac power output；It is connected to the DC inversion module of AC rectification module output end；It is connected to the signal output module of DC inversion module output end；It is connected to the synchronized module of ac power output, for acquiring the frequency and phase information of AC power source；It is connected to the output detection module of signal output module output end；And input terminal connection synchronized module output end, output detection module output end, output end connects the control module of DC inversion module, for controlling the output of DC inversion module.The frequency and phase information of the acquisition AC power source that the present invention is sent according to synchronized module, output setting instruct and export the feedback data that detection module detects signal output module to control the accurate output of DC inversion module.
Description
Technical field
The present invention relates to power domain more particularly to output signal analog device and secondary loading tests systems.
Background technique
In substation, current transformer, voltage transformer are the bridges for connecting primary equipment and secondary device most critical,
It is the foundation of secondary device monitoring, analysis, control.The electric current of substation, the basic wiring of voltage circuit system are all very complicated, especially
It is voltage levels substation, connection equipment is more, and circuit easily occurs opening a way and short trouble.
In previous test and handover regulation, typically after the completion of every routine test to substation and to two
After the completion of secondary protection and loop check, starting test directly is carried out to substation, causes to start in test in substation, often send out
Raw problem is main as follows:
Current loop class, such as the problems such as Current Transformer Secondary open circuit, protective current transformer circuit incorrect polarity；
Voltage circuit class, such as voltage transformer secondary are not introduced into protective device, voltage transformer secondary incorrect polarity；
Primary equipment class, such as primary equipment phase sequence mistake.
Therefore, it before substation puts into operation, in order to examine the wiring reliability of equipment secondary circuit, is exchanged in whole station electrical secondary system
Circuit has connected in the case that debugging finishes, and carries out secondary simulation load test preferably to check separate correct of primary equipment
Property, mutual inductor ratio and polar correctness, the integrality of transformer secondary circuit etc..
Summary of the invention
To solve the above problems, the present invention proposes output signal analog device and secondary loading tests system, to realize
The simulation output of signal simultaneously realizes secondary loading tests by the simulation output of signal.
On the one hand, the present invention proposes output signal analog device, comprising:
It is connected to the AC rectification module of ac power output；
It is connected to the DC inversion module of AC rectification module output end；
It is connected to the signal output module of DC inversion module output end；
It is connected to the synchronized module of ac power output, for acquiring the frequency and phase information of AC power source；
It is connected to the output detection module of signal output module output end；And
Input terminal connects synchronized module output end, output detection module output end, and output end connects DC inversion mould
The control module of block, the frequency and phase information of the acquisition AC power source for being sent according to synchronized module, output setting
The feedback data that detection module detects signal output module is instructed and exported to control the output of DC inversion module.
Preferably, the AC rectification module includes: full bridge rectifier, the input terminal connection of the full bridge rectifier
The output end of ac power output, full bridge rectifier connects DC inversion module.
Preferably, the DC inversion module includes: thyristor inverter, the input terminal connection of the thyristor inverter
The output end of AC rectification module, output end connection signal output module, control terminal link control module.
Preferably, the signal output module includes:
Current output module, for being exported after carrying out decompression up-flow by the output ac current signal of DC inversion module
High current signal；
Voltage output module, for being exported after carrying out drop stream boosting by the output AC voltage signal of DC inversion module
High voltage signal.
Preferably, the control module includes:
Instruction is arranged in man-machine interactive interface, the output for receiving user；
The main controller being connect with man-machine interactive interface, synchronized module and output detection module, for according to power grid
The frequency and phase information of the acquisition AC power source that synchronization module is sent, output setting instruct and output detection module is to signal
The feedback data of output module detection controls the output of driver；
Driver carries out driving setting for the output to DC inversion module.
Preferably, the output detection module includes:
Input terminal connects current output module, the output electric current measure module of output end link control module, for detecting
The electric current of current output module output；
Input terminal connects voltage output module, the output voltage detection module of output end link control module, for detecting
The voltage of voltage output module output.
Preferably, further includes: input terminal connects AC rectification module output end, and output end connects the input of DC inversion module
The DC filtering module at end.
Preferably, the DC filtering module includes: the capacitor for being connected in AC rectification module output end in parallel.
Beneficial effects of the present invention:
It is instructed according to the frequency of the acquisition AC power source of synchronized module transmission and phase information, output setting and defeated
The feedback data that detection module detects signal output module out controls the accurate output of DC inversion module.
On the other hand, the present invention proposes secondary loading tests system, comprising:
Output signal analog device, the output signal analog device are connected to the one of current transformer and voltage transformer
Secondary side, the output for analog current signal and voltage signal；And
Test device, the test device are connected to the secondary side of current transformer and voltage transformer, for electric current
The secondary circuit of mutual inductor, the output of voltage transformer and current transformer, voltage transformer is detected.
Preferably, the test device uses protective relaying device.
Beneficial effects of the present invention:
By output signal analog device, stable operating voltage and stable load current are generated respectively, from current sense
The access of the primary side of device and voltage sensor, the load carrying of analog current sensor and voltage sensor are filled using test
Set realization loading tests.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the circuit diagram of AC rectification module in the embodiment of the present invention one；
Fig. 3 is the circuit diagram of DC inversion module in the embodiment of the present invention one；
Fig. 4 is the structural schematic diagram of signal output module in the embodiment of the present invention one；
Fig. 5 is the circuit diagram of current output module in the embodiment of the present invention one；
Fig. 6 is the circuit diagram of voltage output module in the embodiment of the present invention one；
Fig. 7 is the structural schematic diagram that detection module is exported in the embodiment of the present invention one；
Fig. 8 is the structural schematic diagram of control module in the embodiment of the present invention one；
Fig. 9 is the structural schematic diagram of DC filtering module in the embodiment of the present invention one；
Figure 10 is the circuit diagram of DC filtering module in the embodiment of the present invention one；
Figure 11 is the structural schematic diagram of the embodiment of the present invention two.
Specific embodiment
Below in conjunction with attached drawing, technical scheme of the present invention will be further described, but the present invention is not limited to these realities
Apply example.
Embodiment one
The basic thought of the present embodiment is control module according to output setting instruction is received, and is provided with synchronized module
Data are frequency and phase reference datum mark, form output control signal, are sent to DC inversion module, and receive output detection
The feedback data of module controls the size of output control signal according to feedback data and the deviation of output setting instruction, realizes
The output of the stability contorting of electric current and voltage.
Based on the above conception, the present invention proposes a kind of output signal analog device, as shown in Figure 1, comprising:
It is connected to the AC rectification module of ac power output；
It is connected to the DC inversion module of AC rectification module output end；
It is connected to the signal output module of DC inversion module output end；
It is connected to the synchronized module of ac power output, for acquiring the frequency and phase information of AC power source；
It is connected to the output detection module of signal output module output end；And
Input terminal connects synchronized module output end, output detection module output end, and output end connects DC inversion mould
The control module of block, the frequency and phase information of the acquisition AC power source for being sent according to synchronized module, output setting
The feedback data that detection module detects signal output module is instructed and exported to control the output of DC inversion module.
In one embodiment, AC rectification module includes: full bridge rectifier, and the input terminal of the full bridge rectifier connects
Ac power output is connect, the output end of full bridge rectifier connects DC inversion module.
As shown in Fig. 2, full bridge rectifier includes the full bridge rectifier of diode D1, D2, D3, D4, D5, D6 composition,
The ac signal that AC power source exports is changed into DC signal by full bridge rectifier.
In one embodiment, DC inversion module includes: thyristor inverter, and the input terminal of the thyristor inverter connects
Connect the output end of AC rectification module, output end connection signal output module, control terminal link control module.
As shown in figure 3, thyristor inverter is made of thyristor Q1, Q2, Q3, Q4, Q5, Q6.DC inversion module is to adopt
DC signal is changed into ac current signal by receiving the control signal of operation control module with power electronic technique
And ac voltage signal.
In one embodiment, as shown in figure 4, signal output module includes:
Current output module, for being exported after carrying out decompression up-flow by the output ac current signal of DC inversion module
High current signal；
Voltage output module, for being exported after carrying out drop stream boosting by the output AC voltage signal of DC inversion module
High voltage signal.
Specifically, as shown in figure 5, current output module includes the transformer T1 for being connected to DC inversion module output end,
The output ac current signal of DC inversion module is exported high current signal after carrying out decompression up-flow by transformer T1.
Specifically, as shown in fig. 6, voltage output module includes the transformer T2 for being connected to DC inversion module output end,
The output AC voltage signal of DC inversion module is carried out output HIGH voltage signal after drop stream boosting by transformer T2.
In one embodiment, synchronized module is that it is mutual that AC power source is passed through synchronizing voltage using genlock technology
Sensor is converted to AC signal, then by analog-to-digital conversion, realizes the frequency and phase information of acquisition AC power source, and data are sent out
Give control module.
In one embodiment, as shown in fig. 7, output detection module includes:
Input terminal connects current output module, the output electric current measure module of output end link control module, for detecting
The electric current of current output module output；
Input terminal connects voltage output module, the output voltage detection module of output end link control module, for detecting
The voltage of voltage output module output.
Specifically, output electric current measure module is that current output module output electric current is changed into electricity by current sensor
Signal is flowed, after analog-to-digital conversion, realizes the alternating current amplitude and phase of acquisition current output module, and send the data to
Operate control module.
Specifically, output voltage detection module is that voltage output module output voltage is changed into electricity by voltage sensor
Signal is pressed, after analog-to-digital conversion, realizes the alternating voltage amplitude and phase of the output of collection voltages output module, and data are sent out
Give operation control module.
In one embodiment, as shown in figure 8, control module includes:
Instruction is arranged in man-machine interactive interface, the output for receiving user；
The main controller being connect with man-machine interactive interface, synchronized module and output detection module, for according to power grid
The frequency and phase information of the acquisition AC power source that synchronization module is sent, output setting instruct and output detection module is to signal
The feedback data of output module detection controls the output of driver；
Driver carries out driving setting for the output to DC inversion module.
Specifically, man-machine interactive interface is connect with the output port of host computer or server, user by host computer or
Person's server is sent to master control after receiving output setting instruction according to output demand input and output setting instruction, man-machine interactive interface
Device.Main controller receives the frequency of the AC power source of the output setting instruction of man-machine interactive interface output, the output of synchronized module
And phase information, also receive the feedback data that output detection module detects signal output module.If man-machine interactive interface exports
The size of feedback data that is detected with output module of output setting instruction have deviation, then the output size of driver is adjusted to
Output setting instructs required output size；If the output setting instruction of man-machine interactive interface output detects anti-with output module
The size of feedback data has deviation, then is not adjusted to the output size of driver.Meanwhile main controller is according to synchronized module
The frequency and phase information of the AC power source of output, to driver output AC power source frequency and phase information be set as with
Synchronized module is identical.Driver realizes output in the output control signal for receiving main controller.
By the simulation output of the present apparatus, be on the one hand capable of electric current and voltage signal to simulation output size carry out it is quasi-
True control, on the other hand can be realized with AC power source output frequency and phase realizations it is synchronous, output it is more stable.
As the preferred of the present embodiment, as shown in figure 9, the present apparatus further include: input terminal connects the output of AC rectification module
End, output end connect the DC filtering module of DC inversion module input.
Specifically, as shown in Figure 10, DC filtering module includes: the capacitor for being connected in AC rectification module output end in parallel
C1,C2.Stablize the direct current signal of AC rectification module output by capacitor C1, C2, reduces DC voltage fluctuation.
Embodiment two
The basic thought of the present embodiment is based in existing test and handover regulation, conventional in the items to substation
After the completion of after the completion of test and to second protection and loop check, starting test directly is carried out to substation, is caused in substation
Problem frequent occurrence in starting test, therefore before substation puts into operation, in order to examine the wiring reliability of equipment secondary circuit,
Whole station electrical secondary system ac circuit has connected in the case that debugging finishes, and carries out secondary simulation load test preferably to check one
The separate correctness of secondary device, mutual inductor ratio and polar correctness, the integrality of transformer secondary circuit etc..The present embodiment
By the output signal analog device in embodiment one come simulation output on-load, detection is realized by test device.
Based on the above design, the present invention proposes secondary loading tests system, as shown in figure 11, comprising:
Output signal analog device, the output signal analog device are connected to the one of current transformer and voltage transformer
Secondary side, the output for analog current signal and voltage signal；And
Test device, the test device are connected to the secondary side of current transformer and voltage transformer, for electric current
The secondary circuit of mutual inductor, the output of voltage transformer and current transformer, voltage transformer is detected.
As preferred, the test device in the present embodiment uses protective relaying device.Protective relaying device, which refers to, works as electric power
Force device (such as generator, route etc.) or electric system itself in system have occurred failure and jeopardize safe operation of power system
When, can send warning signal in time to operator, or directly to the breaker that is controlled issue trip signal with
Terminate a kind of automation measure and equipment of the development of these events.Protective relaying device may be implemented electric system automation and
Remote operation and industrial automatic control, such as automatic reclosing, alternate power autocast, remote control, telemetering etc..
In specific actual working environment, the input terminal of output signal analog device connects three-phase alternating current source output terminal
The primary side of the three-phase high current access current transformer of output signal analog device output, while by output signal analog device
The primary side of the three-phase high voltage access voltage transformer of output, output signal analog device export three-phase electricity required by user
Flow valuve and three-phase voltage value, in inspecting state Imitating load on transformer substation operating status.
It simulates under load carrying state herein, staff can be according to protective relaying device correlation regulation, to once setting
Standby separate correctness, mutual inductor ratio and polar correctness, the integrality of transformer secondary circuit etc. check, can be effective
The risk of the electrical secondary systems incorrect operation such as protective relaying device and reduction operation of power networks hidden danger when reducing putting equipment in service, to power station
Inspection and troubleshooting play more convenient effect.
By output signal analog device, stable operating voltage and stable load current are generated respectively, from current sense
The access of the primary side of device and voltage sensor, the load carrying of analog current sensor and voltage sensor are filled using test
Set realization loading tests.
Those skilled in the art can make various modifications to described specific embodiment
Or supplement or be substituted in a similar manner, however, it does not deviate from the spirit of the invention or surmounts the appended claims determines
The range of justice.
Claims (10)
1. output signal analog device characterized by comprising
It is connected to the AC rectification module of ac power output；
It is connected to the DC inversion module of AC rectification module output end；
It is connected to the signal output module of DC inversion module output end；
It is connected to the synchronized module of ac power output, for acquiring the frequency and phase information of AC power source；
It is connected to the output detection module of signal output module output end；And
Input terminal connects synchronized module output end, output detection module output end, and output end connects DC inversion module
Control module, the frequency and phase information of the acquisition AC power source for being sent according to synchronized module, output setting instruction
And the feedback data that detection module detects signal output module is exported to control the output of DC inversion module.
2. output signal analog device according to claim 1, which is characterized in that the AC rectification module includes: complete
Bridge rectification circuit, the input terminal of the full bridge rectifier connect ac power output, and the output end of full bridge rectifier connects
Connect DC inversion module.
3. output signal analog device according to claim 1, which is characterized in that the DC inversion module includes: crystalline substance
Brake tube inverter, the output end of the input terminal connection AC rectification module of the thyristor inverter, output end connection signal are defeated
Module out, control terminal link control module.
4. output signal analog device according to claim 1, which is characterized in that the signal output module includes:
Current output module, for exporting big electricity after carrying out decompression up-flow for the output ac current signal of DC inversion module
Flow signal；
Voltage output module, for exporting high electricity after carrying out drop stream boosting for the output AC voltage signal of DC inversion module
Press signal.
5. output signal analog device according to claim 1, which is characterized in that the control module includes:
Instruction is arranged in man-machine interactive interface, the output for receiving user；
The main controller being connect with man-machine interactive interface, synchronized module and output detection module, for according to synchronized
The frequency and phase information of the acquisition AC power source that module is sent, output setting instruct and output detection module exports signal
The feedback data of module detection controls the output of driver；
Driver carries out driving setting for the output to DC inversion module.
6. output signal analog device according to claim 4, which is characterized in that the output detection module includes:
Input terminal connects current output module, the output electric current measure module of output end link control module, for detecting electric current
The electric current of output module output；
Input terminal connects voltage output module, the output voltage detection module of output end link control module, for detecting voltage
The voltage of output module output.
7. described in any item output signal analog devices according to claim 1~6, which is characterized in that further include: input terminal connects
AC rectification module output end is connect, output end connects the DC filtering module of DC inversion module input.
8. output signal analog device according to claim 7, which is characterized in that the DC filtering module includes: simultaneously
Connection is connected to the capacitor of AC rectification module output end.
9. two loading tests systems characterized by comprising
Output signal analog device as described in any one of claims 1 to 8, the output signal analog device are connected to electric current
The primary side of mutual inductor and voltage transformer, the output for analog current signal and voltage signal；And
Test device, the test device are connected to the secondary side of current transformer and voltage transformer, for Current Mutual Inductance
The secondary circuit of device, the output of voltage transformer and current transformer, voltage transformer is detected.
10. secondary loading tests system according to claim 9, which is characterized in that the test device uses relay
Protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409610.XA CN110133404A (en) | 2019-05-17 | 2019-05-17 | Output signal analog device and secondary loading tests system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910409610.XA CN110133404A (en) | 2019-05-17 | 2019-05-17 | Output signal analog device and secondary loading tests system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110133404A true CN110133404A (en) | 2019-08-16 |
Family
ID=67574697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910409610.XA Pending CN110133404A (en) | 2019-05-17 | 2019-05-17 | Output signal analog device and secondary loading tests system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110133404A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413642A (en) * | 2020-04-13 | 2020-07-14 | 浙江华电器材检测研究所有限公司 | Impact compensation circuit for sudden short-circuit test of transformer |
| CN112798990A (en) * | 2020-12-16 | 2021-05-14 | 国网浙江省电力有限公司杭州供电公司 | 10kV bus voltage transformer secondary circuit wiring checking method |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200994112Y (en) * | 2006-12-18 | 2007-12-19 | 新疆新能源股份有限公司 | Three-phase photovaltaic grid-connected inverter |
| CN102222931A (en) * | 2011-04-19 | 2011-10-19 | 吉林省电力有限公司电力科学研究院 | Microgrid three-phase grid-connected inverter system and control method thereof |
| CN102830299A (en) * | 2012-08-02 | 2012-12-19 | 苏州万可顶钇电源有限公司 | Grid-connected inverter test device and inverter energy recharging simulated power grid test system |
| CN102832639A (en) * | 2012-08-29 | 2012-12-19 | 华南理工大学 | DSP (digital signal processor) based energy-feedback electronic load grid-connected inverting system and control method thereof |
| CN202837418U (en) * | 2012-08-02 | 2013-03-27 | 苏州万可顶钇电源有限公司 | Grid-connected inverter test equipment and inverter energy recharge simulation grid test system |
| KR20150061067A (en) * | 2013-11-25 | 2015-06-04 | 한국전기연구원 | Simulator with Direct Current and Alternating Current Output for Multi-Function Test |
| CN104734526A (en) * | 2013-12-18 | 2015-06-24 | 西安信唯信息科技有限公司 | Simulated grid environment voltage generation device |
| KR20160063807A (en) * | 2014-11-27 | 2016-06-07 | 이운학 | Grid inverter type electric load test device |
| CN106786751A (en) * | 2016-12-28 | 2017-05-31 | 佛山市索尔电子实业有限公司 | A kind of system and method for grid-connected current tracking |
| CN207895062U (en) * | 2017-12-11 | 2018-09-21 | 广州炫通电气科技有限公司 | transformer test device |
| CN208142846U (en) * | 2018-05-08 | 2018-11-23 | 深圳供电局有限公司 | Rectifying load simulation device |
| CN108957292A (en) * | 2018-07-23 | 2018-12-07 | 南京南瑞继保电气有限公司 | A kind of common type of power module testing circuit, system and test method |
| CN109586597A (en) * | 2018-12-15 | 2019-04-05 | 华南理工大学 | It is a kind of that power supply mould group is aoxidized based on phase shifting full bridge soft switch and the high frequency of synchronous rectification |
| CN210109234U (en) * | 2019-05-17 | 2020-02-21 | 国网浙江省电力有限公司宁波供电公司 | Output signal simulation device and secondary on-load test system |
-
2019
- 2019-05-17 CN CN201910409610.XA patent/CN110133404A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200994112Y (en) * | 2006-12-18 | 2007-12-19 | 新疆新能源股份有限公司 | Three-phase photovaltaic grid-connected inverter |
| CN102222931A (en) * | 2011-04-19 | 2011-10-19 | 吉林省电力有限公司电力科学研究院 | Microgrid three-phase grid-connected inverter system and control method thereof |
| CN102830299A (en) * | 2012-08-02 | 2012-12-19 | 苏州万可顶钇电源有限公司 | Grid-connected inverter test device and inverter energy recharging simulated power grid test system |
| CN202837418U (en) * | 2012-08-02 | 2013-03-27 | 苏州万可顶钇电源有限公司 | Grid-connected inverter test equipment and inverter energy recharge simulation grid test system |
| CN102832639A (en) * | 2012-08-29 | 2012-12-19 | 华南理工大学 | DSP (digital signal processor) based energy-feedback electronic load grid-connected inverting system and control method thereof |
| KR20150061067A (en) * | 2013-11-25 | 2015-06-04 | 한국전기연구원 | Simulator with Direct Current and Alternating Current Output for Multi-Function Test |
| CN104734526A (en) * | 2013-12-18 | 2015-06-24 | 西安信唯信息科技有限公司 | Simulated grid environment voltage generation device |
| KR20160063807A (en) * | 2014-11-27 | 2016-06-07 | 이운학 | Grid inverter type electric load test device |
| CN106786751A (en) * | 2016-12-28 | 2017-05-31 | 佛山市索尔电子实业有限公司 | A kind of system and method for grid-connected current tracking |
| CN207895062U (en) * | 2017-12-11 | 2018-09-21 | 广州炫通电气科技有限公司 | transformer test device |
| CN208142846U (en) * | 2018-05-08 | 2018-11-23 | 深圳供电局有限公司 | Rectifying load simulation device |
| CN108957292A (en) * | 2018-07-23 | 2018-12-07 | 南京南瑞继保电气有限公司 | A kind of common type of power module testing circuit, system and test method |
| CN109586597A (en) * | 2018-12-15 | 2019-04-05 | 华南理工大学 | It is a kind of that power supply mould group is aoxidized based on phase shifting full bridge soft switch and the high frequency of synchronous rectification |
| CN210109234U (en) * | 2019-05-17 | 2020-02-21 | 国网浙江省电力有限公司宁波供电公司 | Output signal simulation device and secondary on-load test system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111413642A (en) * | 2020-04-13 | 2020-07-14 | 浙江华电器材检测研究所有限公司 | Impact compensation circuit for sudden short-circuit test of transformer |
| CN112798990A (en) * | 2020-12-16 | 2021-05-14 | 国网浙江省电力有限公司杭州供电公司 | 10kV bus voltage transformer secondary circuit wiring checking method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2607912B1 (en) | Low-voltage testing device for high-voltage frequency converter of serial superposition voltage type | |
| CN109507576B (en) | Detection apparatus for be used for mechanical type direct current breaker performance of opening and shutting | |
| CN108982996B (en) | Outdoor scene substitution type extra-high voltage direct current protection field testing device | |
| CN209624731U (en) | One or two fusion panel switches integration transmission agency detection systems | |
| CN102097024B (en) | Distribution room safety simulation training system | |
| CN103197271B (en) | A kind of method of inspection of MMC topological flexibility direct current transportation test platform | |
| CN104793028B (en) | A kind of three-phase multifunctional test power device and its test method | |
| CN202736328U (en) | Metering program control analog device | |
| CN110133404A (en) | Output signal analog device and secondary loading tests system | |
| CN201331555Y (en) | Power unit input open-phase detector of high-voltage inverter | |
| CN101447667A (en) | High voltage transducer power unit input phase loss detector | |
| CN216411535U (en) | Distributed deployed portable current transformer polarity detection equipment | |
| CN210323281U (en) | Transformer on-load tap-changer tester | |
| CN103353561B (en) | A kind of alternating-current loops of wind generation set detecting system and detection method thereof | |
| CN103439072A (en) | electronic current transformer one-time coupling vibration test device and method thereof | |
| CN106707796A (en) | Hybrid simulation physical simulating device for flexible continuous current convertor | |
| CN210109234U (en) | Output signal simulation device and secondary on-load test system | |
| CN102565614B (en) | Alternating voltage loop test method | |
| CN204330904U (en) | A kind of frequency converter test device | |
| CN102385023A (en) | Intelligent high-voltage circuit grounding detector | |
| CN203551241U (en) | One-time coupled vibration test device for electronic current transformer | |
| CN110850209B (en) | Monitoring control device and system for simulating commutation failure test | |
| CN109600116B (en) | Movable photovoltaic grid-connected detection system | |
| CN210038002U (en) | Voltage sag experiment platform | |
| CN208270679U (en) | A kind of Auto-Test System of string type photovoltaic DC-to-AC converter power amplifier board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |