CN108051686A - A kind of test system of high pressure SVG low voltage ride-through functions - Google Patents
A kind of test system of high pressure SVG low voltage ride-through functions Download PDFInfo
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- CN108051686A CN108051686A CN201810045523.6A CN201810045523A CN108051686A CN 108051686 A CN108051686 A CN 108051686A CN 201810045523 A CN201810045523 A CN 201810045523A CN 108051686 A CN108051686 A CN 108051686A
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- 238000012360 testing method Methods 0.000 title claims abstract description 26
- 238000004891 communication Methods 0.000 claims description 8
- 239000004065 semiconductor Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 claims description 2
- 238000004088 simulation Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- 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
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- General Physics & Mathematics (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The test system of the high pressure SVG low voltage ride-through functions of the present invention, including man-machine interface, master controller, phase-shifting transformer, power module and reactive-load compensator SVG, the primary side of phase-shifting transformer is connected on high voltage transmission line；It is characterized in that：N number of tap is both provided in every phase of phase-shifting transformer primary side, there are one power modules for each tap connection；One end after the series connection of all power modules in same phase is connected with reactive-load compensator SVG, and one end after the other end is connected with the power module in remaining 2 phase forms star-like connection.The test system of the high pressure SVG low voltage ride-through functions of the present invention, both single-phase, two-phase or the variation of balance type three phase Voltage Drop can have been realized, what simulation shorted to earth occurred falls failure, test SVG is low, and the voltage value for wearing performance can be set by man-machine interface, it is easy to operate simple, using compared with low capacity power grid.
Description
Technical field
The present invention relates to a kind of test system of high pressure SVG low voltage ride-through functions, more specifically, more particularly to a kind of
Single-phase, two-phase can be simulated or the test system of the high pressure SVG low voltage ride-through functions of Voltage Drop occur in three relative ground circuits.
Background technology
At present, field of new energy technologies（Such as photovoltaic generation, wind-power electricity generation）Using substantial amounts of dynamic reactive compensation device, such as
Reactive-load compensator SVG according to relevant national standard, is related to the generation of electricity by new energy station of photovoltaic generation, wind-power electricity generation, it is necessary to possess low
Voltage ride through ability.
There is a kind of test method for the low voltage crossing test of wind power plant, photovoltaic plant, by measuring wind power plant, photovoltaic
Electric station grid connection three-phase voltage and electric current calculate the equiva lent impedance of examining system, according to this impedance, pass through series connection and parallel connection one
A respective impedance is fallen to change the voltage for inputting and to wind-powered electricity generation, the voltage value of photovoltaic plant, coming occur when simulating grid occurs short-circuit
Fall failure.But for SVG device but without a kind of pilot system for testing verification SVG low voltage ride-through capabilities.
The content of the invention
The shortcomings that present invention is in order to overcome above-mentioned technical problem, single-phase, two-phase or three can be simulated relatively by providing one kind
There is the test system of the high pressure SVG low voltage ride-through functions of Voltage Drop in short circuit.
The test system of the high pressure SVG low voltage ride-through functions of the present invention becomes including man-machine interface, master controller, phase shift
Depressor, power module and reactive-load compensator SVG, the primary side of phase-shifting transformer are connected on the three phase transmission line of high-voltage fence；Its
It is characterized in that：N number of tap is both provided in every phase of phase-shifting transformer primary side, there are one power modules for each tap connection；
One end after the series connection of all power modules in same phase is connected with reactive-load compensator SVG, the other end and the work(in remaining 2 phase
One end composition star-like connection after rate block coupled in series；The man-machine interface carries out the on off operating mode of power module through master controller
Control, and then control the output voltage of each power module.
The test system of the high pressure SVG low voltage ride-through functions of the present invention, the power module is by rectification circuit, filtered electrical
Road, inverter circuit and module controller composition, rectification circuit are the three phase rectifier being connected with phase-shifting transformer primary side tap
Bridge, filter circuit are made of the filter capacitor for being parallel to three-phase commutation bridge both ends, and inverter circuit is by 4 power half for connecting two-by-two
Conductor device forms；Module controller is the circuit board of the chip containing CPLD.
The test system of the high pressure SVG low voltage ride-through functions of the present invention, the man-machine interface through such as RS232 or
Serial communication bus and the master controller of RS485 communicates, and master controller is through the module on light communication and each power module
Controller communicates.
The beneficial effects of the invention are as follows：The test system of the high pressure SVG low voltage ride-through functions of the present invention, by man-machine boundary
Face, master controller, phase-shifting transformer and power module composition, the primary side of phase-shifting transformer are connected on high-voltage fence, primary side
It is respectively connected with power module per multiple taps in phase, the end after power module series connection in same phase is connected on SVG, another
The power module connected in remaining phase is held to form star-like connection, the short circuit mode of simulation required for being inputted by man-machine interface with
Low voltage value, you can corresponding voltage value is exported by each power module of main controller controls, realizes input to the voltage on SVG
In 0~1.0p.u（P.u is the perunit value of high-voltage fence voltage）In the range of smooth stepless variation, realize to reactive-load compensator
The low-voltage crossing function of SVG is tested.
The test system of the high pressure SVG low voltage ride-through functions of the present invention, can both realize balance type three phase Voltage Drop
Variation, what three relative ground circuits of simulation occurred falls failure, can also realize uneven formula Voltage Drop, simulate single-phase or two-phase
Shorted to earth failure can meet test request of the power grid to the low voltage crossing of SVG device.Test the low voltages for wearing performance of SVG
Value can be set by man-machine interface, easy to operate simple；When testing SVG, system is had little to no effect, SVG is generated
Big reactive current may not flow into power grid, experiment network system capacity need not be configured according to the SVG to capacity, be used
Compared with low capacity power grid.
Description of the drawings
Fig. 1 is the circuit diagram of the test system of the high pressure SVG low voltage ride-through functions of the present invention；
Fig. 2 is the schematic diagram that man-machine interface controls power module in the present invention.
In figure：1 phase-shifting transformer, 2 power modules, 3 reactive-load compensator SVG, 4 man-machine interfaces, 5 master controllers.
Specific embodiment
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, the circuit diagram of the test system of the high pressure SVG low voltage ride-through functions of the present invention is given,
Fig. 2 gives the schematic diagram that man-machine interface controls power module in the present invention, shown high pressure SVG low voltage ride-through functions
Test system is by man-machine interface 4, master controller 5, phase-shifting transformer 1, power module 2 and reactive-load compensator SVG to be tested（3）
Composition, man-machine interface 4 provide human-computer interaction function, the low pressure number simulated as needed for tester can be inputted by man-machine interface 4
Value or low pressure form.Man-machine interface 4 is through communication bus（Such as RS232, RS485）It is communicated with master controller 5, so that letter will be controlled
Breath is sent to master controller 5.Master controller 5 is connected through light communication with power module 2, so that control instruction is sent to work(
Rate module 2.
The primary side and high-voltage fence of shown phase-shifting transformer 1（Such as 10kV）3 phase power cords be connected, phase-shifting transformer
It is provided with 12 taps on every phase winding of 1 primary side, 3 phase lines and the input terminal phase of a power module 2 in each tap
Connection, the end after 12 power modules 2 in same phase are in series are connected on reactive-load compensator SVG, the other end with remaining two
One end composition star-like connection after 12 power modules 2 series connection in phase.In this way, the output by adjusting each power module 2
Voltage, you can adjust input to the voltage swing on reactive-load compensation SVG input terminals, input voltage to SVG can 0~
Smooth step-less adjustment is carried out in the range of 1.0p.u.As a result of 12 power modules 2, it can so reduce each power module 2
Pressure voltage.
Shown power module 2 is made of rectification circuit, filter circuit, inverter circuit and module controller, and rectification circuit is
The three-phase commutation bridge being connected with phase-shifting transformer primary side tap, three-phase commutation bridge are made of the diode connected.Filtered electrical
The filter capacitor that routing is parallel to three-phase commutation bridge both ends is formed, and inverter circuit is by 4 power semiconductors connecting two-by-two
Composition, module controller are the circuit board of the chip containing CPLD, and module controller leads to power semiconductor on inverter circuit
Disconnected state is controlled, to control the output voltage size of power module 2.
During experiment, the test voltage value of needs is set by people interface 4, which passes through serial communication（Such as
RS232、RS485）It is transmitted to master controller 5, master controller 5 generates the control instruction of each power module 2 according to setting value,
The control instruction is transmitted to the module controller of each power module 2, module controller is according to finger by fiber optic communication mode
Order generates the control signal that power semiconductor modular opens shut-off, so as to change each power module output voltage values, finally obtains
It must test that SVG is low to wear performance test voltage value.
Claims (3)
1. a kind of test system of high pressure SVG low voltage ride-through functions, including man-machine interface（4）, master controller（5）, phase shift become
Depressor（1）, power module（2）With reactive-load compensator SVG（3）, the three-phase that the primary side of phase-shifting transformer is connected to high-voltage fence is defeated
On electric wire；It is characterized in that：N number of tap is both provided in every phase of phase-shifting transformer primary side, there are one each tap connections
Power module；In same phase all power modules series connection after one end be connected with reactive-load compensator SVG, the other end and remaining
One end composition star-like connection after power module series connection in 2 phases；The man-machine interface leads to power module through master controller
Disconnected state is controlled, and then controls the output voltage of each power module.
2. the test system of high pressure SVG low voltage ride-through functions according to claim 1, it is characterised in that：The power
Module（2）It is made of rectification circuit, filter circuit, inverter circuit and module controller, rectification circuit is and phase-shifting transformer
The three-phase commutation bridge that grade side tap is connected, filter circuit are made of the filter capacitor for being parallel to three-phase commutation bridge both ends, inversion
Circuit is made of 4 power semiconductors connected two-by-two；Module controller is the circuit board of the chip containing CPLD.
3. the test system of high pressure SVG low voltage ride-through functions according to claim 2, it is characterised in that：It is described man-machine
Interface（4）Serial communication bus and master controller through such as RS232 or RS485（5）It communicates, master controller is through light communication
With each power module（2）On module controller communicate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810045523.6A CN108051686A (en) | 2018-01-17 | 2018-01-17 | A kind of test system of high pressure SVG low voltage ride-through functions |
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| CN201810045523.6A CN108051686A (en) | 2018-01-17 | 2018-01-17 | A kind of test system of high pressure SVG low voltage ride-through functions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100590A (en) * | 2018-07-23 | 2018-12-28 | 南京南瑞继保电气有限公司 | A kind of experiment power supply and tandem type static synchronous compensator converter valve test macro |
| CN113655316A (en) * | 2021-08-17 | 2021-11-16 | 南京智睿能源互联网研究院有限公司 | Low-voltage SVG equipment test system based on serial port communication technology |
| CN113791290A (en) * | 2021-08-17 | 2021-12-14 | 深圳市禾望电气股份有限公司 | Three-phase power grid simulation device with independently controllable output phase voltages and control method thereof |
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| CN104953582A (en) * | 2015-06-25 | 2015-09-30 | 深圳市禾望电气股份有限公司 | Three-phase power grid disturbance generating device and control method thereof |
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| CN106558883A (en) * | 2015-09-24 | 2017-04-05 | 中国电力科学研究院 | A kind of electric network fault control system for reactive power compensator |
| CN207764321U (en) * | 2018-01-17 | 2018-08-24 | 新风光电子科技股份有限公司 | A kind of test system of high pressure SVG low voltage ride-through functions |
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- 2018-01-17 CN CN201810045523.6A patent/CN108051686A/en active Pending
Patent Citations (7)
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| CN102255603A (en) * | 2011-07-27 | 2011-11-23 | 广州智光电气股份有限公司 | Comprehensive control system and method based on high voltage motor control and reactive power compensation |
| CN103368196A (en) * | 2013-07-31 | 2013-10-23 | 上海电气集团股份有限公司 | Chain-type variable direct-current simulation source and high-voltage energy storage converter all-in-one machine and control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100590A (en) * | 2018-07-23 | 2018-12-28 | 南京南瑞继保电气有限公司 | A kind of experiment power supply and tandem type static synchronous compensator converter valve test macro |
| CN109100590B (en) * | 2018-07-23 | 2021-04-20 | 南京南瑞继保电气有限公司 | Test power supply and cascading static synchronous compensator converter valve test system |
| CN113655316A (en) * | 2021-08-17 | 2021-11-16 | 南京智睿能源互联网研究院有限公司 | Low-voltage SVG equipment test system based on serial port communication technology |
| CN113791290A (en) * | 2021-08-17 | 2021-12-14 | 深圳市禾望电气股份有限公司 | Three-phase power grid simulation device with independently controllable output phase voltages and control method thereof |
| CN113791290B (en) * | 2021-08-17 | 2024-04-02 | 深圳市禾望电气股份有限公司 | Three-phase power grid simulation device capable of independently controlling output voltages of all phases and control method thereof |
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Inventor after: Hu Shunquan Inventor after: Su Liujun Inventor after: Ren Qiguang Inventor after: Pei Baofeng Inventor after: Li Zhigang Inventor after: Chen Zaojun Inventor before: Su Liujun Inventor before: Ren Qiguang Inventor before: Pei Baofeng Inventor before: Li Zhigang Inventor before: Chen Zaojun |