CN206922436U - A kind of multiterminal element test system - Google Patents
A kind of multiterminal element test system Download PDFInfo
- Publication number
- CN206922436U CN206922436U CN201720411485.2U CN201720411485U CN206922436U CN 206922436 U CN206922436 U CN 206922436U CN 201720411485 U CN201720411485 U CN 201720411485U CN 206922436 U CN206922436 U CN 206922436U
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- receiving end
- current conversion
- conversion station
- type current
- lcc
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 99
- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 230000001052 transient effect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
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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]
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The utility model provides a kind of multiterminal element test system, is related to high-voltage dc transmission electrical domain, and the characteristic of multi-terminal HVDC transmission unit can be tested.The multiterminal element test system includes multi-terminal HVDC transmission unit and adjustment unit；Multi-terminal HVDC transmission unit includes sending end equivalent power supply, sending end LCC types current conversion station, i receiving end LCC types current conversion station and i receiving end equivalent power supply；Sending end LCC type current conversion station inputs are connected with sending end equivalent power supply, output end is connected with the input of the 1st receiving end LCC type current conversion station, i-th of receiving end LCC type current conversion station input is connected with the output end of the i-th 1 receiving end LCC type current conversion stations, and i receiving end LCC type current conversion stations output end is also connected one by one with i receiving end equivalent power supply；Adjustment unit is connected with sending end LCC types current conversion station and/or at least one receiving end LCC type current conversion stations.Above-mentioned multiterminal element test system is used to test the characteristic of multi-terminal HVDC transmission unit.
Description
Technical field
It the utility model is related to high-voltage dc transmission electrical domain, more particularly to a kind of multiterminal element test system.
Background technology
D.C. high voltage transmission has obtained more and more extensive answer as a kind of electrical energy transportation mode in modern power systems
With.Interconnected between large regional grid by direct current transportation, be advantageously implemented the asynchronous operation between large regional grid with isolating, can
Overcome stable problem caused by the excessive AC electric power systems long range interconnection of capacity, and then improve the dynamic product of large regional grid
Matter and the stability for improving large regional grid.Traditional direct current transportation is mostly double ended system, is only capable of realizing point-to-point direct current
Power transmits, when using direct current interconnection between multiple AC systems, it is necessary to which a plurality of DC power transmission line, investment will be significantly greatly increased in this
Cost and operating cost.In this case, multi-terminal direct current transmission system is arisen at the historic moment.
For at present, because multi-terminal direct current transmission system is a kind of newer direct current transportation mode, then to multiterminal element
The characteristic of transmission system carries out deep analysis and research is necessary.
Utility model content
The utility model provides a kind of multiterminal element test system, and the characteristic of multi-terminal HVDC transmission unit can be surveyed
Examination.
To reach above-mentioned purpose, the utility model adopts the following technical scheme that：
The utility model provides a kind of multiterminal element test system, and the multiterminal element test system includes multiterminal element
The adjustment unit of power transmission unit and the operational factor for adjusting the multi-terminal HVDC transmission unit；The multi-terminal HVDC transmission
Unit includes sending end equivalent power supply, sending end LCC types current conversion station, i receiving end LCC types current conversion station and i receiving end equivalent power supply；Its
In, the input of the sending end LCC type current conversion stations is connected with the sending end equivalent power supply, the sending end LCC type current conversion stations it is defeated
Go out end with the input of the 1st receiving end LCC type current conversion station to be connected, the input of i-th receiving end LCC type current conversion station and the i-th -1
The output end of receiving end LCC type current conversion stations is connected, the output end of i receiving end LCC type current conversion station also with i receiving end equivalent power supply one by one
It is corresponding to be connected, i >=2；The adjustment unit and the sending end LCC types current conversion station and/or at least one receiving end LCC types current conversion station phase
Even.
In multiterminal element test system provided by the utility model, multi-terminal HVDC transmission unit is specifically included for real
Sending end equivalent power supply, sending end LCC types current conversion station, i receiving end LCC types current conversion station and the i receiving end equivalent power supply of existing direct current transportation,
Adjustment unit is connected with sending end LCC types current conversion station and/or at least one receiving end LCC type current conversion stations, and this makes it possible to utilize regulation
Unit is by adjusting the operational factor of multi-terminal HVDC transmission unit, so as to test multi-terminal HVDC transmission unit in different operational factors
Under characteristic, and then realize deep analysis and research are carried out to multi-terminal HVDC transmission unit.
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, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation one for the multiterminal element test system that Fig. 1 is provided by the utility model embodiment；
The structural representation two for the multiterminal element test system that Fig. 2 is provided by the utility model embodiment；
The structural representation three for the multiterminal element test system that Fig. 3 is provided by the utility model embodiment；
The structural representation four for the multiterminal element test system that Fig. 4 is provided by the utility model embodiment.
Description of reference numerals：
1- sending end equivalent power supplies；2- sending end LCC type current conversion stations；
3- receiving end LCC type current conversion stations；4- receiving end equivalent power supplies；
51- sending end control model adjusters；52 receiving end control model adjusters；
61- sending end power governors；62- receiving end power governors；
7- impedance regulators.
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, below in conjunction with this practicality
Accompanying drawing in new embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described.Obviously, institute
The embodiment of description is only the utility model part of the embodiment, rather than whole embodiments.Based in the utility model
Embodiment, all other implementation that those of ordinary skill in the art are obtained on the premise of creative work is not made
Example, belong to the scope of the utility model protection.
A kind of multiterminal element test system is present embodiments provided, the multiterminal element test system includes multi-terminal HVDC transmission
The adjustment unit of unit and the operational factor for adjusting multi-terminal HVDC transmission unit.As shown in figure 1, multi-terminal HVDC transmission list
Member specifically includes sending end equivalent power supply 1, sending end LCC types current conversion station 2, i receiving end LCC types current conversion station 3 and i receiving end equivalent power supply
4。
Wherein, the input of sending end LCC types current conversion station 2 is connected with sending end equivalent power supply 1, sending end LCC types current conversion station 2 it is defeated
Go out end with the input of the 1st receiving end LCC types current conversion station 3 to be connected, the input and i-th -1 of i-th of receiving end LCC types current conversion station 3
The output end of individual receiving end LCC types current conversion station 3 is connected, the output end of i receiving end LCC types current conversion station 3 also with i receiving end equivalent power supply
4 correspond connected, i >=2.Adjustment unit and sending end LCC types current conversion station 2 and/or at least one phase of receiving end LCC types current conversion station 3
Even.
In the multiterminal element test system that the present embodiment is provided, multi-terminal HVDC transmission unit is specifically included for realizing
Sending end equivalent power supply 1, sending end LCC types current conversion station 2, i receiving end LCC types current conversion station 3 and the i receiving end equivalent power supply of direct current transportation
4, adjustment unit is connected with sending end LCC types current conversion station 2 and/or at least one receiving end LCC types current conversion station 3, and this makes it possible to utilize
Adjustment unit is by adjusting the operational factor of multi-terminal HVDC transmission unit, so as to test multi-terminal HVDC transmission unit in different operations
Characteristic under parameter, and then realize and deep analysis and research are carried out to multi-terminal HVDC transmission unit.
Referring again to Fig. 1, specifically, adjustment unit may include sending end control model adjuster 51 and/or at least one
Receiving end control model adjuster 52.
Wherein, when adjustment unit includes sending end control model adjuster 51, sending end control model adjuster 51 and sending end
LCC types current conversion station 2 is connected, and sending end control model adjuster 51 is used for the control model for adjusting sending end LCC types current conversion station 2.Work as tune
Section unit is when including at least one receiving end control model adjuster 52, at least one receiving end control model adjuster 52 respectively with extremely
A few receiving end LCC types current conversion station 3, which corresponds, to be connected, and receiving end control model adjuster 52 is used to adjust coupled receiving end
The control model of LCC types current conversion station 3.
When adjustment unit includes control sending end control model adjuster 51, by the control for adjusting sending end LCC types current conversion station 2
Molding formula, steady-state response of the multi-terminal HVDC transmission unit in the case where sending end LCC types current conversion station 2 has different control models can be tested
Characteristic and transient response characteristic.When adjustment unit includes at least one receiving end control model adjuster 52, by adjusting at least
The control model of one receiving end LCC types current conversion station 3, can test multi-terminal HVDC transmission unit has in receiving end LCC types current conversion station 3
Steady-state response characteristic and transient response characteristic under different control models.
As shown in Fig. 2 adjustment unit may include sending end power governor 61 and receiving end power governor 62, or, such as Fig. 3
Shown, adjustment unit may include two receiving end power governors 62.
When adjustment unit includes sending end power governor 61 and receiving end power governor 62, sending end power governor 61 with
Sending end LCC types current conversion station 2 is connected, and sending end power governor 61 is used for the transmission power value for adjusting sending end LCC types current conversion station 2.By
End power governor 62 is connected with the 1st receiving end LCC types current conversion station 3, and receiving end power governor 62 is used to adjust the 1st receiving end
The transmission power value of LCC types current conversion station 3.
When adjustment unit includes two receiving end power governors 62, first receiving end power governor 62 and the i-th -1
Receiving end LCC types current conversion station 3 is connected, and first receiving end power governor 62 is used for the i-th -1 receiving end LCC types current conversion station 3 of adjustment
Transmission power value.Second receiving end power governor 62 is connected with i-th of receiving end LCC types current conversion station 3, and second receiving end power is adjusted
Save the transmission power value that device 62 is used to adjust i-th of receiving end LCC types current conversion station 3；Wherein, i >=2.
When adjustment unit includes sending end power governor 61 and receiving end power governor 62, by adjusting sending end LCC types
The transmission power value of current conversion station 2 and the 1st receiving end LCC types current conversion station 3, can test multi-terminal HVDC transmission unit in different work(
Steady-state characteristic under rate transportation horizontal.Likewise, when adjustment unit includes two receiving end power governors 62, pass through adjustment the
The transmission power value of i-1 receiving end LCC types current conversion station 3 and i-th of receiving end LCC types current conversion station 3, can test multi-terminal HVDC transmission
Steady-state characteristic of the unit under different power transportation horizontals.
In the multiterminal element test system that the present embodiment is provided, sending end equivalent power supply 1 and sending end LCC types current conversion station 2
Between be connected by alternating current circuit, pass through DC line between sending end LCC types current conversion station 2 and the 1st receiving end LCC types current conversion station 3
Be connected, be connected between i-th of receiving end LCC types current conversion station 3 and the i-th -1 receiving end LCC types current conversion station 3 by DC line, respectively by
It is connected between end LCC types current conversion station 3 and corresponding receiving end equivalent power supply 4 by alternating current circuit.
As shown in figure 4, adjustment unit may also include at least one impedance regulator 7, impedance regulator 7 and the equivalent electricity of sending end
Alternating current circuit between source 1 and sending end LCC types current conversion station 2 is connected, and/or, impedance regulator 7 and receiving end LCC types current conversion station 3 with
Alternating current circuit between corresponding receiving end equivalent power supply 4 is connected, and impedance regulator 7 is used to adjust coupled alternating current circuit
Impedance value.
When adjustment unit includes impedance regulator 7, by adjusting the impedance value of alternating current circuit, multiterminal element can be tested
Transient response characteristic of the power transmission unit under different exchange degree of strength.
It should be noted that above-mentioned sending end equivalent power supply 1, sending end LCC types current conversion station 2, receiving end LCC types current conversion station 3, receiving end
Equivalent power supply 4, sending end control model adjuster 51, receiving end control model adjuster 52, sending end power governor 61, receiving end power
The function that adjuster 62, impedance regulator 7 are realized is existing sending end equivalent power supply 1, sending end LCC types current conversion station 2, receiving end
LCC types current conversion station 3, receiving end equivalent power supply 4, sending end control model adjuster 51, receiving end control model adjuster 52, sending end power
Adjuster 61, receiving end power governor 62, the function achieved by impedance regulator 7, it is of the present utility model to the improvement is that
The annexation between above-mentioned each structure is improved, and is connected using which kind of mode, and those skilled in the art can be according to existing
Have what knowledge was expected.
Specific embodiment of the present utility model is the foregoing is only, but the scope of protection of the utility model is not limited to
This, any one skilled in the art is in the technical scope that the utility model discloses, the change that can readily occur in
Or replace, it should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with the power
The protection domain that profit requires is defined.
Claims (5)
1. a kind of multiterminal element test system, it is characterised in that the multiterminal element test system includes multi-terminal HVDC transmission list
The adjustment unit of member and the operational factor for adjusting the multi-terminal HVDC transmission unit；
The multi-terminal HVDC transmission unit include sending end equivalent power supply, sending end LCC types current conversion station, i receiving end LCC types current conversion station and
I receiving end equivalent power supply；Wherein, the input of the sending end LCC type current conversion stations is connected with the sending end equivalent power supply, described to send
The output end of end LCC type current conversion stations is connected with the input of the 1st receiving end LCC type current conversion station, i-th of receiving end LCC type current conversion station
Input be connected with the output end of the i-th -1 receiving end LCC type current conversion station, the output end of i receiving end LCC type current conversion station also with i
Individual receiving end equivalent power supply, which corresponds, to be connected, i >=2；
The adjustment unit is connected with the sending end LCC types current conversion station and/or at least one receiving end LCC type current conversion stations.
2. multiterminal element test system according to claim 1, it is characterised in that the adjustment unit controls including sending end
Mode regulators and/or at least one receiving end control model adjuster；
Wherein, the sending end control model adjuster is connected with the sending end LCC type current conversion stations, the sending end control model regulation
Device is used for the control model for adjusting the sending end LCC type current conversion stations；
At least one receiving end control model adjuster corresponds with least one receiving end LCC types current conversion station to be connected,
The receiving end control model adjuster is used for the control model for adjusting corresponding receiving end LCC type current conversion stations.
3. multiterminal element test system according to claim 1, it is characterised in that
The adjustment unit includes sending end power governor and receiving end power governor；Wherein, the sending end power governor with
The sending end LCC type current conversion stations are connected, and the sending end power governor is used for the conveying work(for adjusting the sending end LCC type current conversion stations
Rate value；The receiving end power governor is connected with the 1st receiving end LCC type current conversion station, and the receiving end power governor is used to adjust
The transmission power value of 1st receiving end LCC type current conversion station；
Or, the adjustment unit includes two receiving end power governors；Wherein, the 1st receiving end power governor and described i-th -1
Individual receiving end LCC type current conversion stations are connected, and the 1st receiving end power governor is used to adjust the i-th -1 receiving end LCC type changes of current
The transmission power value stood；2nd receiving end power governor is connected with i-th of receiving end LCC type current conversion stations, described 2nd by
Power governor is held to be used for the transmission power value for adjusting i-th of receiving end LCC type current conversion station.
4. multiterminal element test system according to claim 1, it is characterised in that the sending end equivalent power supply is sent with described
It is connected between the LCC type current conversion stations of end by alternating current circuit, the sending end LCC types current conversion station and the 1st receiving end LCC type changes of current
It is connected between standing by DC line, is led between i-th of receiving end LCC types current conversion station and the i-th -1 receiving end LCC type current conversion station
Cross DC line to be connected, be connected between each receiving end LCC types current conversion station and corresponding receiving end equivalent power supply by alternating current circuit.
5. multiterminal element test system according to claim 4, it is characterised in that the adjustment unit includes at least one
AC line between impedance regulator, the impedance regulator and the sending end equivalent power supply and the sending end LCC type current conversion stations
Road is connected, and/or, the friendship between the impedance regulator and the receiving end LCC types current conversion station and corresponding receiving end equivalent power supply
Flow Line is connected, and the impedance regulator is used for the impedance value for adjusting coupled alternating current circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720411485.2U CN206922436U (en) | 2017-04-18 | 2017-04-18 | A kind of multiterminal element test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720411485.2U CN206922436U (en) | 2017-04-18 | 2017-04-18 | A kind of multiterminal element test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206922436U true CN206922436U (en) | 2018-01-23 |
Family
ID=61307282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720411485.2U Expired - Fee Related CN206922436U (en) | 2017-04-18 | 2017-04-18 | A kind of multiterminal element test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206922436U (en) |
-
2017
- 2017-04-18 CN CN201720411485.2U patent/CN206922436U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210607 Address after: 510700 3rd, 4th and 5th floors of building J1 and 3rd floor of building J3, No.11 Kexiang Road, Science City, Luogang District, Guangzhou City, Guangdong Province Patentee after: China South Power Grid International Co.,Ltd. Address before: 510080 West Tower 13-20 Floor, Shui Jungang 6 and 8 Dongfeng East Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: China South Power Grid International Co.,Ltd. Patentee before: POWER GRID TECHNOLOGY RESEARCH CENTER. CHINA SOUTHERN POWER GRID |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180123 |