CN109818359A - The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city - Google Patents
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city Download PDFInfo
- Publication number
- CN109818359A CN109818359A CN201910128973.6A CN201910128973A CN109818359A CN 109818359 A CN109818359 A CN 109818359A CN 201910128973 A CN201910128973 A CN 201910128973A CN 109818359 A CN109818359 A CN 109818359A
- Authority
- CN
- China
- Prior art keywords
- reactive
- soft
- city
- soft straight
- transmission system
- 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
- 230000005540 biological transmission Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000005611 electricity Effects 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000013316 zoning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 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
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
-
- 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]
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention proposes the soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city, pass through the cooperation of the reactive voltages adjustment equipments such as fixed capacity, reactor, main transformer tap in the idle control of soft straight converter station and substation, preferably stablize the coordination voltage level in plant stand, voltage fluctuation is reduced, the whole Voltage Stability Level of city voltage is improved.Compared with prior art, the present invention can adequately utilize converter station reactive power compensation planning, improve the power supply quality of urban distribution network, reduce the advantages that network loss.
Description
Technical field
The present invention relates to the cooperation technologies of a kind of flexible HVDC transmission system and AC system, and in particular to Yi Zhongcheng
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in the soft straight transmission system in city.
Background technique
With the rapid growth of power network development, the quickening of Process of Urbanization Construction paces, city electricity unit is more and more intensive, supplies
The increase of electric line and power supply leads to continuing to increase for system short circuit capacity, in order to reduce the capacity of short circuit of system, city electricity
The structure that net gradually takes layering and zoning to run, urban distribution network partition running can reduce the short circuit current of power grid, so that power supply
Subregion is more clear.But the urban distribution network reliability of partition running will have a greatly reduced quality, once N-1 occurs for alternating current circuit or main transformer
Failure cannot be run, it would be possible to the case where causing normal route or main transformer to overload, it has to take cutting load or confession
Electric region grid switching operation.More serious situation, once alternating current circuit, bus or main transformer that one-end substation is connect with power grid occur
The accident all to trip, it would be possible to the risk for causing one-end substation all to have a power failure.For this failure, low-voltage etc. can be taken
The method of the grid switching operation transfer load of grade route, but since grid switching operation needs the time to be up to dozens of minutes even a few houres,
With the development of digital economy, this power outage is valued by people, and domestic and international power monitoring mechanism has been included in confession
Electric Reliability Check index system.This power outage is even more to be difficult to receive for power supply is than the urban distribution network of comparatively dense,
In the big city in China, had occurred and that several times since the failure of one-end substation leads to the accident having a power failure on a small scale, to warp
The influence on development of Ji society constitutes more serious influence.
In order to improve city zoning power grid power supply reliability, partition power grid can be passed through into the soft straight reality of multiterminal when operating normally
The interconnection of existing partition power grid.Directly have the function of that power quick response, active reactive are separately adjustable etc., may be implemented subregion due to soft
It mutually supplies, power such as quickly supports at the functions.Soft is directly desirable as the cooperation after a kind of access of novel device with AC system
The new problem of the one kind faced, soft straight active reactive can be used as an independence with independent control, each soft straight converter station
Controlled reactive source, and there is also other reactive-load compensation equipments in substation.If soft straight converter station electric network reactive-load control not with
Other reactive-load compensation equipments are coordinated, then are likely to occur the opposite or inconsistent situation of control target, lead to the pole of reactive compensation
Big waste, due to urban distribution network load intensive, protects certain Reactive Power Reserve to have the operational safety of urban distribution network most important
Effect.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of soft straight transmissions of electricity in city
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in system, this method by the idle control of soft straight converter station with
The cooperation of the reactive voltages adjustment equipments such as fixed capacity, reactor, main transformer tap in substation, preferably stable factory
Coordination voltage level in standing reduces voltage fluctuation, improves the whole Voltage Stability Level of city voltage.This side proposed
The global voltage that method can improve urban distribution network very much is horizontal, improves power quality.
In order to achieve the above object, solution of the invention is:
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand, feature exist in a kind of soft straight transmission system in city
In: pass through the reactive voltages tune such as fixed capacity, reactor, main transformer tap in the idle control of soft straight converter station and substation
The cooperation of equipment is saved, preferably stablizes the coordination voltage level in plant stand, reduces voltage fluctuation, improve the whole of city voltage
The Voltage Stability Level of body.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: the soft straight transmission system in the city refers to using MMC structure I GBT full-controlled device as the soft of representative
Property DC transmission system, the independent control of active reactive may be implemented, applied to urban distribution network realize subregion interconnection one kind answer
Use scene.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: the idle control of the soft straight transmission system in the city refers to the work of soft straight each converter station
For idle voltage input, reactive command can be received and carry out independent reactive voltage adjusting.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: fixed capacity, reactor in the idle control and substation, main transformer tap is idle electricity
The cooperation for pressing adjustment equipment refers to that the idle control of soft straight converter station is coordinated with the control of substation's reactive apparatus.When capacitor, electricity
Anti- device, main transformer tap are transferred to when reaching idle, voltage dead band bound, and soft straight Reactive-power control uses up maximum output starting,
Voltage is withdrawn into normal region.Voltage keeps the idle power output of converter station in a small range, as far as possible then when operating normally with to the greatest extent
Reservation Reactive Power Reserve more than possible.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: the soft straight converter station including both ends, three ends, four ends or extends to the soft straight defeated of N-terminal
Electric system.
After adopting the above scheme, the power supply quality of urban distribution network can be improved in the present invention, and the voltage stabilization for promoting power grid is abundant
City electricity can be improved with the cooperation for exchanging reactive-load compensation equipment by soft straight converter station when there is an emergency in degree
The power quality of net, in case of emergency recalls that soft straight fast reactive is spare in time, reduces voltage and runs quickly routed possibility.
Detailed description of the invention
Fig. 1 is the soft straight transmission system structural schematic diagram of urban distribution network application multiterminal of one embodiment of the invention；
Fig. 2 is the soft directly coordinated control logic diagram with reactive-load compensation equipment in station of the present invention.
Specific embodiment
Detailed description of the preferred embodiments with reference to the accompanying drawing.
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand, feature exist in a kind of soft straight transmission system in city
In: pass through the reactive voltages tune such as fixed capacity, reactor, main transformer tap in the idle control of soft straight converter station and substation
The cooperation of equipment is saved, preferably stablizes the coordination voltage level in plant stand, reduces voltage fluctuation, improve the whole of city voltage
The Voltage Stability Level of body.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: the soft straight transmission system in the city refers to using MMC structure I GBT full-controlled device as the soft of representative
Property DC transmission system, the independent control of active reactive may be implemented, applied to urban distribution network realize subregion interconnection one kind answer
Use scene.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: the idle control of the soft straight transmission system in the city refers to the work of soft straight each converter station
For idle voltage input, reactive command can be received and carry out independent reactive voltage adjusting.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: fixed capacity, reactor in the idle control and substation, main transformer tap is idle electricity
The cooperation for pressing adjustment equipment refers to that the idle control of soft straight converter station is coordinated with the control of substation's reactive apparatus.When capacitor, electricity
Anti- device, main transformer tap are transferred to when reaching idle, voltage dead band bound, and soft straight Reactive-power control uses up maximum output starting,
Voltage is withdrawn into normal region.Voltage keeps the idle power output of converter station in a small range, as far as possible then when operating normally with to the greatest extent
Reservation Reactive Power Reserve more than possible.
Further: the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method processed, it is characterised in that: the soft straight converter station including both ends, three ends, four ends or extends to the soft straight defeated of N-terminal
Electric system.
After adopting the above scheme, the power supply quality of urban distribution network can be improved in the present invention, and the voltage stabilization for promoting power grid is abundant
City electricity can be improved with the cooperation for exchanging reactive-load compensation equipment by soft straight converter station when there is an emergency in degree
The power quality of net, in case of emergency recalls that soft straight fast reactive is spare in time, reduces voltage and runs quickly routed possibility.
The present invention proposes the soft directly coordinated control side with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city
Method, wherein the soft straight transmission system structural schematic diagram in city is as shown in Figure 1.Fig. 1 is one four sections soft straight city transmission systems, often
The idle of a soft straight converter station can realize a certain range of continuous freely adjust.And it can be soft directly to change with independent control
Stream station can be with the reactive apparatus of other in plant stand, such as capacitor, reactor, load tap changer.Pass through soft straight converter station and power transformation
The cooperation of exchange reactive apparatus mainly adjusts electricity by capacity reactance device, main transformer tap when operating normally in standing
Pressure, the dynamic reactive for retaining soft straight converter station are spare.When there is an emergency, main transformer tap, capacity reactance device have been found
When adjusting bound through reaching, the dynamic reactive for enabling soft straight converter station rapidly is spare, and logic chart is as shown in Figure 2:
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city,
It is idle to be characterized by the idle control of soft straight converter station and fixed capacity, reactor, main transformer tap in substation etc.
The cooperation of voltage adjuster preferably stablizes the coordination voltage level in plant stand, reduces voltage fluctuation, improves city electricity
The whole Voltage Stability Level of pressure.
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in the soft straight transmission system in a kind of city above-mentioned,
Be characterized in that: the soft straight transmission system in the city refers to using MMC structure I GBT full-controlled device as the flexible DC transmission of representative
The independent control of active reactive may be implemented in system, and a kind of application scenarios of subregion interconnection are realized applied to urban distribution network.
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in the soft straight transmission system in a kind of city above-mentioned,
Be characterized in that: the idle control of the soft straight transmission system in the city refers to using soft straight each converter station as no power control
Source processed can receive reactive command and carry out independent reactive voltage adjusting.
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in the soft straight transmission system in a kind of city above-mentioned,
It is characterized in that: fixed capacity, reactor, main transformer tap reactive voltage adjustment equipment in the idle control and substation
Cooperation, refer to soft straight converter station it is idle control with substation's reactive apparatus control coordinate.When capacitor, reactor, main transformer
Tap is transferred to when reaching idle, voltage dead band bound, and soft straight Reactive-power control uses up maximum output starting, and voltage is withdrawn into
In normal region.Voltage keeps the idle power output of converter station in a small range, as far as possible then when operating normally with guarantor as much as possible
Stay Reactive Power Reserve.
The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in the soft straight transmission system in a kind of city above-mentioned,
It is characterized in that: the soft straight converter station, including both ends, three ends, four ends or the soft straight transmission system for extending to N-terminal.
It should be noted that each element in the present invention, such as converter station, direct current, switch, change of current change, refer to mostly
Imitate element；That is, equivalence element in circuit structure is either single element, is also possible to multiple same elements
Cascade (series, parallel etc.) forms.For any equivalence element in the embodiment of the present invention, any of said function can be realized
Equivalent circuit should all be covered within the protection scope of the embodiment of the present invention.
Finally it should be noted that: only illustrate technical solution of the present invention rather than its limitations in conjunction with above-described embodiment.Institute
The those of ordinary skill in category field is to be understood that: those skilled in the art can repair a specific embodiment of the invention
Change or equivalent replacement, but these modifications or change are being applied within pending patent requirements protection scope.
Claims (5)
1. the soft directly control method for coordinating with reactive-load compensation equipment in plant stand, feature exist in a kind of soft straight transmission system in city
In: pass through the reactive voltages tune such as fixed capacity, reactor, main transformer tap in the idle control of soft straight converter station and substation
The cooperation of equipment is saved, preferably stablizes the coordination voltage level in plant stand, reduces voltage fluctuation, improve the whole of city voltage
The Voltage Stability Level of body.
2. the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city as described in claim 1
Method processed, it is characterised in that: the soft straight transmission system in the city refers to using MMC structure I GBT full-controlled device as the soft of representative
Property DC transmission system, the independent control of active reactive may be implemented, applied to urban distribution network realize subregion interconnection one kind answer
Use scene.
3. the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city as described in claim 1
Method processed, it is characterised in that: the idle control of the soft straight transmission system in the city refers to the work of soft straight each converter station
For idle voltage input, reactive command can be received and carry out independent reactive voltage adjusting.
4. the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city as described in claim 1
Method processed, it is characterised in that: fixed capacity, reactor in the idle control and substation, main transformer tap is idle electricity
The cooperation for pressing adjustment equipment refers to that the idle control of soft straight converter station is coordinated with the control of substation's reactive apparatus.When capacitor, electricity
Anti- device, main transformer tap are transferred to when reaching idle, voltage dead band bound, and soft straight Reactive-power control uses up maximum output starting,
Voltage is withdrawn into normal region.Voltage keeps the idle power output of converter station in a small range, as far as possible then when operating normally with to the greatest extent
Reservation Reactive Power Reserve more than possible.
5. the soft directly coordination control with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city as described in claim 1
Method processed, it is characterised in that: the soft straight converter station including both ends, three ends, four ends or extends to the soft straight defeated of N-terminal
Electric system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128973.6A CN109818359A (en) | 2019-02-21 | 2019-02-21 | The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910128973.6A CN109818359A (en) | 2019-02-21 | 2019-02-21 | The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109818359A true CN109818359A (en) | 2019-05-28 |
Family
ID=66607092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910128973.6A Pending CN109818359A (en) | 2019-02-21 | 2019-02-21 | The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109818359A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150357818A1 (en) * | 2013-04-18 | 2015-12-10 | State Grid Corporation Of China | Optimal control method for reactive voltage of wind power and photovoltaic power centralized grid connection |
| CN106936140A (en) * | 2015-12-30 | 2017-07-07 | 国网辽宁省电力有限公司电力科学研究院 | The reactive-load adjusting device and method coordinated based on flexible direct current and high-voltage parallel electric capacity |
| CN108964075A (en) * | 2018-07-02 | 2018-12-07 | 国网湖南省电力有限公司 | A kind of UHVDC converter station voltage and reactive power coordinated control method and system |
-
2019
- 2019-02-21 CN CN201910128973.6A patent/CN109818359A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150357818A1 (en) * | 2013-04-18 | 2015-12-10 | State Grid Corporation Of China | Optimal control method for reactive voltage of wind power and photovoltaic power centralized grid connection |
| CN106936140A (en) * | 2015-12-30 | 2017-07-07 | 国网辽宁省电力有限公司电力科学研究院 | The reactive-load adjusting device and method coordinated based on flexible direct current and high-voltage parallel electric capacity |
| CN108964075A (en) * | 2018-07-02 | 2018-12-07 | 国网湖南省电力有限公司 | A kind of UHVDC converter station voltage and reactive power coordinated control method and system |
Non-Patent Citations (1)
| Title |
|---|
| 于汀等: "基于柔性直流分区互联的受端城市电网无功电压控制策略", 《高电压技术》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9841778B2 (en) | Use of distributed generator (DG) inverters as STATCOMs for decreasing line losses | |
| CN100570984C (en) | Realize the control method of transformer station voltage of continuous device and discrete device comprehensive coordination | |
| US11990753B1 (en) | Use of distributed generator (DG) inverters as STATCOMs for decreasing line losses | |
| CN103001234B (en) | Method for controlling reactive voltage in ultra-high voltage grid on the basis of improved economic voltage difference | |
| CN102810857B (en) | Power quality regulator for series direct current power system | |
| CN102832612B (en) | Hybrid power quality conditioner for direct current power system | |
| CN107910877B (en) | Switching control method for parallel capacitor in high-power fluctuation of sending end converter station | |
| CN111614117A (en) | Transient voltage disturbance fast response control method for centralized photovoltaic power station | |
| CN102646984A (en) | Method and system for realizing real-time automatic compensation of voltage and reactive power of substation | |
| CN103094912A (en) | 750 kV magnetic-control type controllable paralleling reactor excitation system and achieving method thereof | |
| CN1790858A (en) | Method and system for providing voltage support to a load connected to a utility power network | |
| CN104578080A (en) | Low-voltage treatment method for rural power grid | |
| CN102832611B (en) | Parallel-form power quality conditioner for direct current power system | |
| CN109818359A (en) | The soft directly control method for coordinating with reactive-load compensation equipment in plant stand in a kind of soft straight transmission system in city | |
| CN106058916A (en) | Passive grid-connected-to-off-network switching control method based on single three-phase multiple microgrids | |
| CN104022514B (en) | Classification is adjustable high voltage reactor and Static Var Compensator optimistic coordinated control method | |
| CN103094906A (en) | 750 kV magnetic-control type controllable highly resistance circuit based on compensation winding energy-getting excitation | |
| CN103280818B (en) | Transformer substation reactive voltage control method and system | |
| CN205945059U (en) | Cascade compensation device suitable for two loop line ways | |
| CN213243558U (en) | Dynamic reactive and fixed reactive cooperative control device | |
| US20240264621A1 (en) | Use of distributed generator (dg) inverters as statcoms for decreasing line losses | |
| CN110556835B (en) | Layered control device and method for magnetic control type controllable shunt reactor | |
| CN204304436U (en) | A kind of power distribution network automatic voltage reactive-load adjusting device | |
| CN206628833U (en) | Reactive power compensation device | |
| BUNANI | Improvement of distribution voltage profile and system effeciency using static synchronous compensator: A case study of Kigali Distribution Feeder |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190528 |
|
| WD01 | Invention patent application deemed withdrawn after publication |