CN206640303U - A kind of microcomputer type flexible direct current power transmission system surge suppression control system - Google Patents
A kind of microcomputer type flexible direct current power transmission system surge suppression control system Download PDFInfo
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- CN206640303U CN206640303U CN201720140196.3U CN201720140196U CN206640303U CN 206640303 U CN206640303 U CN 206640303U CN 201720140196 U CN201720140196 U CN 201720140196U CN 206640303 U CN206640303 U CN 206640303U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Abstract
A kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides, including：Surge suppression control device, three-phase ganged operating breaker, AC system, transformer；The switching-on phase angle and separating brake phase angle of supply voltage when reaching default combined floodgate point voltage-phase or separating brake point voltage-phase by the phase for the phase voltage for detecting AC system to control transformer during no-load closing, and switching-on phase angle during breaker deenergization has with transformer magnetic circuit polarity and numerical value and directly contacted, when switching-on phase angle is in phase corresponding with the remanent magnetism polarity in transformer last power-cut time magnetic circuit, it can be achieved with remanent magnetism and magnetic bias opposite polarity, so as to eliminate magnetic circuit saturation, thus the purpose for suppressing excitation surge current is reached, so as to solve the technical problem that current conversion station charge initiation process causes voltage pulsation in the case where not changing current electrical main connecting wire of current conversion station.
Description
Technical field
It the utility model is related to technology of transmission of electricity frontier, more particularly to a kind of microcomputer type flexible direct current power transmission system is shoved suppression
Control system processed.
Background technology
Nan'ao Multi-end flexible direct current transmission engineering was domestic first Multi-end flexible direct current transmission system, in 2013 12
Went into operation the moon 25 and run.Indicate that flexible direct current power transmission system now flourishes.As shown in figure 1, Nan'ao multiterminal are soft
Property DC transmission engineering city current conversion station, ± 160kV Taurus current conversion station and the station group of ± 160kV green grass or young crops Australia current conversion station three are moulded by ± 160kV
Into wherein ± 160kV Taurus current conversion station and ± 160kV green grass or young crops Australia current conversion station are located on Nan ' ao Island, ± 160kV modeling city current conversion stations are located at
Shantou is land greatly.Nan'ao Multi-end flexible direct current transmission engineering is that the wind-powered electricity generation energy on Nan ' ao Island is passed through into ± 160kV Taurus the changes of current
Stand and AC rectification is transported to Shantou continent by ± 160kV green grass or young crops Australia's current conversion station for direct current, then the city change of current is moulded by ± 160kV
It is that alternating current supplies continent electricity consumption to stand DC inverter.
In general, the normal boot process of this flexible direct current power transmission system needs to first pass through transformer station to current conversion station
Converter power transformer and converter valve charging unblock.First pass through and various parameters are set and order control breaker closing by closing a floodgate, make
Obtain AC system to charge to each current conversion station, after treating all current conversion stations chargings, unlock all current conversion stations, and lifting direct current
Pressure, after DC voltage reaches nominal value range, steady preview roadway is transferred to, each current conversion station enters AC/DC parallel operation shape
State, start completion.
However, when being charged to current conversion station, it is likely that can be to the 110kV busbar voltage ripples for transformer station of charging
It is dynamic, by 110kV line influences new energy resources system (such as wind electric field blower) safe and stable operation, blower fan off-grid is caused, influences wind
The safe and stable operation of machine.
Existing current conversion station charge initiation process is direct combined floodgate breaker, and charging resistor is behind transformer, can not
Play a part of suppressing transformer excitation flow, cause the voltage pulsation of the 110kV power networks of 220kV transformer stations, and excitation surge current
It is bigger, suppress this voltage pulsation without any measure.Therefore, the technical problem of most critical is not change the current change of current
Stand in the case of an electrical main connecting wire and how to solve the influence that flexible DC power transmission engineering startup process causes voltage pulsation.
Utility model content
The utility model embodiment discloses a kind of microcomputer type flexible direct current power transmission system surge suppression control system, is used for
Solve the current conversion station charge initiation process in the case where not changing current electrical main connecting wire of current conversion station and cause voltage pulsation
Technical problem.
A kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides, bag
Include：Surge suppression control device, three-phase ganged operating breaker, AC system, transformer；
The surge suppression control device connects the circuit of the AC system, for gathering the phase voltage of AC system；
The surge suppression control device connects the three-phase ganged operating breaker, for sending close a floodgate order or separating brake
Order to the three-phase ganged operating breaker；
One end of the three-phase ganged operating breaker connects the AC system, and the other end connects the transformer, uses
In the connection and disconnection that control the transformer and the AC system；
Wherein, the surge suppression control device gathers the phase voltage of AC system and reception comes from observing and controlling in current conversion station
Combined floodgate order or separating brake order, the phase for detecting the phase voltage reaches the default point voltage-phase or separating brake point voltage that closes a floodgate
During phase, the combined floodgate order or separating brake order are sent to the three-phase ganged operating breaker so that the three-phase ganged
Operating breaker is according to close a floodgate order or the separating brake order control transformer and the connection and disconnection of the AC system.
Preferably, the default point voltage-phase that closes a floodgate is specially：Phase voltage phase reaches 90 degree and closed a floodgate in advance inherently
The phase voltage phase of period；
The intrinsic time section of closing a floodgate is that the three-phase ganged operating breaker mechanism closes a floodgate intrinsic actuation time and two
Minor loop is delayed.
Preferably, the default separating brake point voltage-phase is specially：Phase voltage phase reaches 90 degree, and to shift to an earlier date separating brake intrinsic
The phase voltage phase of period；
The separating brake intrinsic time section is the three-phase ganged operating breaker mechanism separating brake intrinsic actuation time and two
Minor loop is delayed.
Preferably, the surge suppression control device specifically connect the three-phase ganged operating breaker closing coil and
Switching winding.
Preferably, the transformer also connects converter valve by starting resistance, for being filled by starting resistance to converter valve
Electricity.
Preferably, the surge suppression control device is especially by current-voltage sampling detection module and A/D modular converters
The circuit of the AC system is connected, the electric current electricity of the circuit for gathering AC system by current-voltage sampling detection module
Pressure, is converted into digital information by the Current Voltage by A/D modular converters and is handled.
Preferably, the surge suppression control device is also connected the three-phase ganged and operated and broken by intake detection module
Road device, for detecting the intake of the three-phase ganged operating breaker.
Preferably, the utility model embodiment also includes recording storage system；
The recording storage system connects the surge suppression control device, for gathering the waveform of each divide-shut brake, bag
Include controlled side current-voltage waveform, AC system mains side phase voltage waveform.
Preferably, the utility model embodiment also includes liquid crystal display systems；
The liquid crystal display systems connects the recording storage system, for showing the waveform of each divide-shut brake, including by
Control side current-voltage waveform, AC system mains side phase voltage.
Preferably, the utility model embodiment also includes host computer；
The host computer connects the recording storage system, for obtaining the waveform of each divide-shut brake, including controlled side electricity
Flow voltage waveform, AC system mains side phase voltage waveform；
The host computer is also connected with the surge suppression control device, is gushed for changing microcomputer type flexible direct current power transmission system
Stream suppresses the control parameter of control device.
As can be seen from the above technical solutions, the utility model embodiment has advantages below：
A kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides, bag
Include：Surge suppression control device, three-phase ganged operating breaker, AC system, transformer；The surge suppression control device connects
The circuit of the AC system is connect, for gathering the phase voltage of AC system；The surge suppression control device connection described three
Be connected operating breaker, for sending combined floodgate order or separating brake order to the three-phase ganged operating breaker；The three-phase
One end of combined operation breaker connects the AC system, and the other end connects the transformer, for controlling the transformer
With the connection and disconnection of the AC system；Wherein, the surge suppression control device gathers the phase voltage of AC system and connect
The combined floodgate order or separating brake order for coming from observing and controlling in current conversion station are received, the phase for detecting the phase voltage reaches default combined floodgate point
When voltage-phase or separating brake point voltage-phase, the combined floodgate order or separating brake order are sent to the three-phase ganged and operate open circuit
Device so that the three-phase ganged operating breaker is according to close a floodgate order or the separating brake order control transformer and the friendship
The connection and disconnection of streaming system.The utility model embodiment reaches the default point electricity that closes a floodgate by detecting the phase of the phase voltage
The switching-on phase angle and separating brake phase angle of supply voltage when pressing phase or separating brake point voltage-phase to control transformer during no-load closing,
And switching-on phase angle during breaker deenergization has with transformer magnetic circuit polarity and numerical value and directly contacted, at switching-on phase angle
When phase corresponding with the remanent magnetism polarity in transformer last power-cut time magnetic circuit, remanent magnetism and magnetic bias polarity phase can be achieved with
Instead, so as to eliminate magnetic circuit saturation, the purpose for suppressing excitation surge current, i.e. voltage on the basis of power taking Source side voltage are thus reached, according to
The closing time of breaker controls the combined floodgate angle of breaker close to the separating brake angle of last time breaker, you can reaches transformer
The purpose of magnetic bias and remanent magnetism cancellation.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram for being used to illustrate flexible direct current power transmission system in the utility model embodiment；
Fig. 2 is a kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides
One embodiment schematic diagram；
Fig. 3 is the schematic diagram that the utility model embodiment is used to illustrate main wiring in current conversion station；
Fig. 4 is a kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides
Combined floodgate order timing send schematic diagram；
Fig. 5 is a kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides
Separating brake order timing send schematic diagram；
Fig. 6 is a kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides
Incoming current suppression device internal module schematic diagram；
Fig. 7 is a kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides
The oscillogram that shows of liquid crystal display systems；
Fig. 8 is a kind of microcomputer type flexible direct current power transmission system surge suppression control system that the utility model embodiment provides
The waveform diagram of net side switching current is detected when operation；
Wherein, reference is as follows：
1st, surge suppression control device；2nd, three-phase ganged operating breaker；3rd, transformer.
Embodiment
The utility model embodiment discloses a kind of microcomputer type flexible direct current power transmission system surge suppression control system, is used for
Solve the current conversion station charge initiation process in the case where not changing current electrical main connecting wire of current conversion station and cause voltage pulsation
Technical problem.
A kind of referring to Fig. 2, microcomputer type flexible direct current power transmission system surge suppression control that the utility model embodiment provides
One embodiment of system processed, including：Surge suppression control device 1, three-phase ganged operating breaker 2, AC system, transformer
3；
Surge suppression control device 1 connects the circuit of AC system, for gathering the phase voltage of AC system；
Surge suppression control device 1 connects three-phase ganged operating breaker 2, for sending combined floodgate order or separating brake order extremely
Three-phase ganged operating breaker 2；
One end connection AC system of three-phase ganged operating breaker 2, other end connection transformer 3, for controlling transformation
Device 3 and the connection and disconnection of AC system；
Wherein, surge suppression control device 1 gathers the phase voltage of AC system and reception comes from observing and controlling in current conversion station
Combined floodgate order or separating brake order, the phase for detecting phase voltage reach default point voltage-phase or the separating brake point voltage-phase of closing a floodgate
When, will close a floodgate order or separating brake order send to three-phase ganged operating breaker 2 so that the basis of three-phase ganged operating breaker 2
Combined floodgate order or separating brake order control transformer 3 and the connection and disconnection of AC system.
Wherein, transformer 3 is in current conversion station, and it is exactly to be charged to current conversion station to be connected to transformer 3 with AC system.
Referring to Fig. 3, Fig. 3 is the main wiring schematic diagram in current conversion station, wherein transformer 3 is the change of current transformation in Fig. 3
Device, the AC circuit breaker in Fig. 3 is traditional breaker, according to the utility model, need to be connected the AC circuit breaker in Fig. 3
Microcomputer type flexible direct current power transmission system surge suppression control system provided by the utility model.
Generally speaking, the electricity of microcomputer type flexible direct current power transmission system surge suppression control system collection AC system circuit
Pressure, such as A phase voltages, the three-phase combined floodgate/separating brake order for coming from observing and controlling in current conversion station is received, control system is in suitable voltage
At phase, combined floodgate/separating brake order is sent, this order enters combined floodgate/separating brake input terminal of control box, after keeping loop directly
Access breaker closing/switching winding.It is delayed in view of breaker mechanism intrinsic actuation time and secondary circuit, by this time
As correction, make switch can the actual division when predetermined phase is carried out, be effectively prevented from temporary caused by random folding
State overvoltage, overcurrent, so as to improve the quality of power supply.
Referring to Fig. 4, the default point voltage-phase that closes a floodgate is specially：Phase voltage phase reaches 90 degree and closed a floodgate in advance the proper time
Between section phase voltage phase；
Intrinsic time section of closing a floodgate is that the mechanism of three-phase ganged operating breaker 2 combined floodgate intrinsic actuation time and secondary circuit prolong
When, i.e. △ t in Fig. 4；
Flexible direct current power transmission system is during charge initiation, microcomputer type flexible direct current power transmission system surge suppression control system
After system receives the combined floodgate order from control system, into startup program, temporarily retain this combined floodgate and order and consider breaker
It is expected that the operating time (considers breaker mechanism intrinsic actuation time and secondary circuit delay, using this time as amendment
Amount), then the combined floodgate order is sent to breaker closing line after delay computed in advance in the form of closing a floodgate and ordering
Circle, so as to ensure that breaker carries out actual combined floodgate in predetermined phase.I.e. control system remains stationary as after receiving combined floodgate order, treats
(reaching a combined floodgate point voltage-phase) during to combined floodgate point, microcomputer type flexible direct current power transmission system surge suppression control system sends conjunction
Lock pulse is to breaker operation cabinet.
Referring to Fig. 5, default separating brake point voltage-phase is specially：Phase voltage phase reaches 90 degree and shifts to an earlier date the separating brake proper time
Between section phase voltage phase；
Separating brake intrinsic time section is that the mechanism separating brake of three-phase ganged operating breaker 2 intrinsic actuation time and secondary circuit prolong
When, i.e. △ t in Fig. 5；
Microcomputer type flexible direct current power transmission system surge suppression control system is received from current conversion station controlling system separating brake
After order, into startup program, temporarily retain this separating brake order and consider the expection operating time of breaker, then to order the separating brake
Order is being sent to breaker open operation coil after delay computed in advance in the form of trip signal, so as to ensure that breaker exists
Predetermined phase carries out actual separating brake.I.e. control system remains stationary as after receiving separating brake order, (reaches minute until during separating brake point
Lock point voltage-phase) microcomputer type flexible direct current power transmission system surge suppression control system sends separating brake pulse to breaker operator
Case.
It is direct to be achieved in that separating brake phase angle during breaker deenergization has with transformer magnetic circuit polarity and numerical value
System, and switching-on phase angle is then relevant with the polarity and numerical value of magnetic bias.The conjunction of supply voltage during so as to control transformer during no-load closing
Lock phase angle, and the remanent magnetism polarity in transformer last power-cut time magnetic circuit is determined, remanent magnetism and magnetic bias opposite polarity are realized,
So as to eliminate magnetic circuit saturation, thus reach the purpose for suppressing excitation surge current.
Surge suppression control device 1 specifically connects the closing coil and switching winding of three-phase ganged operating breaker 2.
Transformer 3 also connects converter valve by starting resistance, for being charged by starting resistance to converter valve.
Surge suppression control device 1 exchanges system especially by current-voltage sampling detection module with the connection of A/D modular converters
The circuit of system, the Current Voltage of the circuit for gathering AC system by current-voltage sampling detection module, is changed by A/D
Current Voltage is converted into digital information and handled by module.
Surge suppression control device 1 also connects three-phase ganged operating breaker 2 by intake detection module, for detecting
The intake of three-phase ganged operating breaker 2.
Above is a kind of microcomputer type flexible direct current power transmission system surge suppression that the utility model embodiment provides is controlled
The detailed description of one embodiment of system, it is below that a kind of microcomputer type flexible direct current provided the utility model embodiment is defeated
Another embodiment of electric system surge suppression control system is described in detail.
The utility model embodiment provide a kind of microcomputer type flexible direct current power transmission system surge suppression control system it is another
One embodiment, including：Surge suppression control device 1, three-phase ganged operating breaker 2, AC system, transformer 3；
Surge suppression control device 1 connects the circuit of AC system, for gathering the phase voltage of AC system；
Surge suppression control device 1 connects three-phase ganged operating breaker 2, for sending combined floodgate order or separating brake order extremely
Three-phase ganged operating breaker 2；
One end connection AC system of three-phase ganged operating breaker 2, other end connection transformer 3, for controlling transformation
Device 3 and the connection and disconnection of AC system；
Wherein, surge suppression control device 1 gathers the phase voltage of AC system and reception comes from observing and controlling in current conversion station
Combined floodgate order or separating brake order, the phase for detecting phase voltage reach default point voltage-phase or the separating brake point voltage-phase of closing a floodgate
When, will close a floodgate order or separating brake order send to three-phase ganged operating breaker 2 so that the basis of three-phase ganged operating breaker 2
Combined floodgate order or separating brake order control transformer 3 and the connection and disconnection of AC system.
Default combined floodgate puts a voltage-phase：Phase voltage phase reaches the phase electricity of 90 degree of intrinsic time sections of closing a floodgate in advance
Press phase；
Intrinsic time section of closing a floodgate is that the mechanism of three-phase ganged operating breaker 2 combined floodgate intrinsic actuation time and secondary circuit prolong
When.
Default separating brake point voltage-phase is specially：Phase voltage phase reaches the 90 degree of phase for shifting to an earlier date separating brake intrinsic time section electricity
Press phase；
Separating brake intrinsic time section is that the mechanism separating brake of three-phase ganged operating breaker 2 intrinsic actuation time and secondary circuit prolong
When.
Surge suppression control device 1 specifically connects the closing coil and switching winding of three-phase ganged operating breaker 2.
Transformer 3 also connects converter valve by starting resistance, for being charged by starting resistance to converter valve.
Referring to Fig. 6, the CPU in surge suppression control device 1 provided by the utility model adopts especially by Current Voltage
Sample detection module connects the circuit of AC system with A/D modular converters, is handed over for being gathered by current-voltage sampling detection module
The Current Voltage of the circuit of streaming system, Current Voltage is converted into by digital information by A/D modular converters and handled.
Surge suppression control device 1 also connects three-phase ganged operating breaker 2 by intake detection module, for detecting
The intake of three-phase ganged operating breaker 2.
The utility model embodiment also includes recording storage system；
Recording storage system connection surge suppression control device 1, for gathering the waveform of each divide-shut brake, including controlled side
Current-voltage waveform, AC system mains side phase voltage waveform.
The utility model embodiment also includes liquid crystal display systems；
Referring to Fig. 7, liquid crystal display systems connects recording storage system, for showing the waveform of each divide-shut brake, including
Controlled side current-voltage waveform, AC system mains side phase voltage.
The utility model embodiment also includes host computer；
Host computer connects recording storage system, for obtaining the waveform of each divide-shut brake, including controlled side Current Voltage ripple
Shape, AC system mains side phase voltage waveform；
Host computer is also connected with surge suppression control device 1, for changing microcomputer type flexible direct current power transmission system surge suppression
The control parameter of control device 1.
It should be noted that microcomputer type flexible direct current power transmission system surge suppression control system is by the voltage A phases of mains side
It is linked into device, after the divide-shut brake order of the control system of Multi-end flexible direct current transmission system is received, makes the on/off switch of A phases
Level angle all approaches 90 degree, so as to reach the purpose of magnetic bias and mutual gram of remanent magnetism, realizes the suppression of excitation surge current, ensures that Nan'ao is more
Hold the safety of the equipment of flexible DC power transmission engineering.
Referring to Fig. 8, as can be seen from Figure 8, after employing the utility model, in whole flexible direct current power transmission system start-up course
Middle A maximum phase currents 1.07kA (instantaneous value), B maximum phase currents 1.80kA (instantaneous value), C maximum phase currents 1.76kA
(instantaneous value)；Maximum current B phases 1.80kA (instantaneous value), about the 1.01 of rated current peak value times in three-phase, surge suppression effect
Fruit is good.
Liquid crystal display systems can show the waveform of each divide-shut brake, facilitate operations staff or scientific research personnel to carry out waveform
Analysis.
Especially, when intrinsic time section of closing a floodgate is 80ms, separating brake intrinsic time section is 35.5ms, and the actual conjunction of switch can be set
The lock time is 80ms, and opening time is arranged to 35.5ms.
Microcomputer type flexible direct current power transmission system surge suppression control system provided by the utility model is in multiterminal flexible direct current
Power transmission engineering first Application.Multi-end flexible direct current transmission engineering is utilizing the surge suppression side based on magnetic bias Yu mutual gram of principle of remanent magnetism
When method, whether the Control protection system that analyze flexible direct current power transmission system adapts to this method, prevents from pressing down in excitation surge current
During system, the control protective unit appearance of flexible direct current power transmission system is acted and alerted.
In addition, by the preposition display screen of microcomputer type flexible direct current power transmission system surge suppression control device, can check
The information such as the current-voltage waveform of divide-shut brake, combined floodgate angle every time, while it is soft can directly to be changed by this display screen for microcomputer type
The control parameter of property DC transmission system surge suppression control device, good interface is provided for man-machine interaction.
A kind of microcomputer type flexible direct current power transmission system surge suppression control system provided by the utility model is entered above
Go and be discussed in detail, for those of ordinary skill in the art, according to the thought of the utility model embodiment, in specific embodiment party
There will be changes in formula and application, in summary, this specification content should not be construed as to limit of the present utility model
System.
Claims (10)
- A kind of 1. microcomputer type flexible direct current power transmission system surge suppression control system, it is characterised in that including：Surge suppression controls Device, three-phase ganged operating breaker, AC system, transformer；The surge suppression control device connects the circuit of the AC system, for gathering the phase voltage of AC system；The surge suppression control device connects the three-phase ganged operating breaker, for sending close a floodgate order or separating brake order To the three-phase ganged operating breaker；One end of the three-phase ganged operating breaker connects the AC system, and the other end connects the transformer, for controlling Make the connection and disconnection of the transformer and the AC system；Wherein, the phase voltage of the surge suppression control device collection AC system and reception come from the conjunction of observing and controlling in current conversion station Lock order or separating brake order, the phase for detecting the phase voltage reach default point voltage-phase or the separating brake point voltage-phase of closing a floodgate When, the combined floodgate order or separating brake order are sent to the three-phase ganged operating breaker so that the three-phase ganged operation Breaker is according to close a floodgate order or the separating brake order control transformer and the connection and disconnection of the AC system.
- 2. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 1, its feature exist In the default point voltage-phase that closes a floodgate is specially：Phase voltage phase reaches the phase electricity of 90 degree of intrinsic time sections of closing a floodgate in advance Press phase；The intrinsic time section of closing a floodgate is three-phase ganged operating breaker mechanism combined floodgate intrinsic actuation time and secondary returning Road is delayed.
- 3. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 1, its feature exist In the default separating brake point voltage-phase is specially：Phase voltage phase reaches the 90 degree of phase for shifting to an earlier date separating brake intrinsic time section electricity Press phase；The separating brake intrinsic time section is the three-phase ganged operating breaker mechanism separating brake intrinsic actuation time and secondary returning Road is delayed.
- 4. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 1, its feature exist In the surge suppression control device specifically connects the closing coil and switching winding of the three-phase ganged operating breaker.
- 5. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 1, its feature exist In the transformer also connects converter valve by starting resistance, for being charged by starting resistance to converter valve.
- 6. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 1, its feature exist In the surge suppression control device connects described exchange especially by current-voltage sampling detection module with A/D modular converters The circuit of system, the Current Voltage of the circuit for gathering AC system by current-voltage sampling detection module, is turned by A/D The Current Voltage is converted into digital information and handled by mold changing block.
- 7. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 1, its feature exist In the surge suppression control device also connects the three-phase ganged operating breaker by intake detection module, for examining Survey the intake of the three-phase ganged operating breaker.
- 8. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 1, its feature exist In, in addition to recording storage system；The recording storage system connects the surge suppression control device, for gathering the waveform of each divide-shut brake, including by Control side current-voltage waveform, AC system mains side phase voltage waveform.
- 9. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 8, its feature exist In, in addition to liquid crystal display systems；The liquid crystal display systems connects the recording storage system, for showing the waveform of each divide-shut brake, including controlled side Current-voltage waveform, AC system mains side phase voltage.
- 10. a kind of microcomputer type flexible direct current power transmission system surge suppression control system according to claim 8, its feature exist In, in addition to host computer；The host computer connects the recording storage system, for obtaining the waveform of each divide-shut brake, including controlled side electric current electricity Corrugating, AC system mains side phase voltage waveform；The host computer is also connected with the surge suppression control device, is shoved suppression for changing microcomputer type flexible direct current power transmission system The control parameter of control device processed.
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| CN107910848A (en) * | 2017-11-30 | 2018-04-13 | 上海致达智能科技股份有限公司 | A kind of suppressing method of excitation surge current |
| CN107968389A (en) * | 2017-12-27 | 2018-04-27 | 国网辽宁省电力有限公司电力科学研究院 | A kind of transformer excitation flow restraining device and suppressing method based on remanent magnetism estimation |
| CN108521127A (en) * | 2018-03-27 | 2018-09-11 | 广东电网有限责任公司 | A kind of flexible DC power transmission engineering startup process voltage falls restraining device |
| CN109638865A (en) * | 2018-11-15 | 2019-04-16 | 北京科诺伟业科技股份有限公司 | A kind of method that energy accumulation current converter inhibits excitation surge current |
| CN111478368A (en) * | 2020-05-13 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Connection transformer switching method, system and equipment for hot standby connection transformer circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107910848A (en) * | 2017-11-30 | 2018-04-13 | 上海致达智能科技股份有限公司 | A kind of suppressing method of excitation surge current |
| CN107910848B (en) * | 2017-11-30 | 2019-03-19 | 上海致达智能科技股份有限公司 | A kind of suppressing method of excitation surge current |
| CN107968389A (en) * | 2017-12-27 | 2018-04-27 | 国网辽宁省电力有限公司电力科学研究院 | A kind of transformer excitation flow restraining device and suppressing method based on remanent magnetism estimation |
| CN107968389B (en) * | 2017-12-27 | 2019-08-13 | 国网辽宁省电力有限公司电力科学研究院 | A kind of transformer excitation flow inhibition device and suppressing method based on remanent magnetism estimation |
| CN108521127A (en) * | 2018-03-27 | 2018-09-11 | 广东电网有限责任公司 | A kind of flexible DC power transmission engineering startup process voltage falls restraining device |
| CN109638865A (en) * | 2018-11-15 | 2019-04-16 | 北京科诺伟业科技股份有限公司 | A kind of method that energy accumulation current converter inhibits excitation surge current |
| CN111478368A (en) * | 2020-05-13 | 2020-07-31 | 南方电网科学研究院有限责任公司 | Connection transformer switching method, system and equipment for hot standby connection transformer circuit |
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