CN108258661A - HVDC transmission system jumps into isolated island mode bipolar locking method and device - Google Patents
HVDC transmission system jumps into isolated island mode bipolar locking method and device Download PDFInfo
- Publication number
- CN108258661A CN108258661A CN201711378434.5A CN201711378434A CN108258661A CN 108258661 A CN108258661 A CN 108258661A CN 201711378434 A CN201711378434 A CN 201711378434A CN 108258661 A CN108258661 A CN 108258661A
- Authority
- CN
- China
- Prior art keywords
- transmission system
- direct current
- locking
- station control
- current station
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for dc systems
Abstract
The invention discloses the method and devices of existing HVDC transmission system islet operation bipolar locking, and this method comprises the following steps：S1, the dc power threshold value for setting DC transmission system, the handoff delay value of direct current station control system of DC transmission system and locking delay value；Whether S2, detection alternating current interconnection road disconnect, if alternating current interconnection road disconnects and the bipolar DC total power value of DC transmission system is less than the dc power threshold value of step S1 settings and the time reaches the handoff delay value of step S1 settings, enter step S3；S3, DC transmission system direct current station control system spare direct current station switched to by primary direct current station control system control system, when the time after handover success reaches the locking delay value of step S1 settings, the DC bipolar block of DC transmission system, DC transmission system is stopped transport.This method can cause HVDC transmission system low power run to jump into bipolar locking under isolated island mode.
Description
Technical field
The present invention relates to technical field of power systems, and in particular to a kind of HVDC transmission system low power run is jumped into
Isolated island mode bipolar locking method and device.
Background technology
Hydropower generator dry season is chronically at underrun state, and generator may be constantly in vibrating area fortune
Row will cause generator and workshop the defects of different degrees of occur.It is sent out for the water wheels of power station underrun situation exposure
Motor group, the vibration problems of workshop, the method that the number of units that need to be switched in dry season by reduction increases unit output are detached from unit
Vibrating area.But during booting number of units reduction, DC transmission system will enter islet operation shape if alternating current interconnection road disconnects
State, since generator booting platform is few in islanded system, islanded system short circuit current is small, and AC system dies down, and AC overvoltage is asked
Topic protrudes, isolated island bad stability, to prevent first and second equipment damage in isolated island, once DC transmission system is jumped under underload
Entering islet operation then needs to be latched DC bipolar at once, stoppage in transit direct current.
Invention content
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of HVDC transmission system low-power is provided
Isolated island mode bipolar locking method and device is jumped into operation, to reduce the booting number of units of hydropower generator, increase unit output
Unit is made to be detached from vibrating area, thoroughly solves the problems, such as hydropower generator dry season underrun.
To achieve the above object, the technical scheme is that：
HVDC transmission system low power run jumps into isolated island mode bipolar locking method, and the method includes walking as follows
Suddenly：
S1, set the dc power threshold value of DC transmission system, DC transmission system direct current station control system switching
Delay value and locking delay value；Wherein, the DC transmission system is configured with two sets of direct current station control systems, respectively primary straight
Stream station control system and spare direct current station control system；
Whether S2, detection alternating current interconnection road disconnect, if alternating current interconnection road disconnect and DC transmission system it is bipolar straight
Stream total power value less than step S1 setting dc power threshold value and the time reach step S1 setting handoff delay value, then into
Enter step S3；
S3, DC transmission system direct current station control system spare direct current station control system is switched to by primary direct current station control system
It unites, when the time after handover success reaches the locking delay value of step S1 settings, DC transmission system bipolar locking, direct current transportation
System shutdown, while direct current station control system sends out and cuts exchange command entirely.
The dc power threshold value is 500-1000MW, and handoff delay value is 300-800ms, and locking delay value is 800-
1200ms。
The dc power threshold value is 600MW, and handoff delay value is 500ms, and locking delay value is 1000ms.
HVDC transmission system low power run jumps into isolated island mode bipolar locking device, including：
Setup unit, including for set the power setting module of the dc power threshold value of DC transmission system, use
In the handoff delay setting module of the direct current station control system switching of setting DC transmission system and for setting DC power transmission system
The locking delay adjustments module of the DC bipolar block of system；Wherein, the DC transmission system is configured with two sets of direct current station control systems
System, respectively primary direct current station control system and spare direct current station control system；
Alternating current interconnection road detection unit is used to detect whether alternating current interconnection road disconnects；
Power detecting unit is used to detect the bipolar DC general power of DC transmission system；
System switch unit is controlled at direct current station, is set respectively with alternating current interconnection road detection unit, power detecting unit, power
Cover half block and handoff delay setting module are connected, when detection unit detects the disconnection of alternating current interconnection road and power detection list
Member detects that the bipolar DC general power of DC transmission system reaches less than the performance number of power setting module setting and time and cuts
When changing the time value of delay adjustments module setting, direct current station controls system switch unit and the direct current station of DC transmission system is controlled system
Spare direct current station control system is switched to by primary direct current station control system；
DC bipolar block unit is connected with locking delay adjustments module and direct current station control system switch unit,
When time after control system switches successfully when the direct current station of DC transmission system reaches the value of locking delay adjustments module setting, directly
Stream bipolar locking unit causes the bipolar locking of DC transmission system, and DC transmission system is stopped transport；The system hair of direct current station control simultaneously
Go out complete cut and exchange wave filter order.
The setup unit further includes the input setting module that puts into operation for initialization system and for initialization system
Out of service exits setting module.
The set value of the power of the power setting module is 500-1000MW, and the handoff delay of handoff delay setting module is set
Definite value is 300-800ms, and the locking delay adjustments value of locking delay adjustments module is 800-1200ms.
The set value of the power of the power setting module be 600MW, the handoff delay setting value of handoff delay setting module
For 500ms, the locking delay adjustments value of locking delay adjustments module is 1000ms.
Compared with prior art, the present invention advantage is：
By using method provided in this embodiment, HVDC transmission system can automatically realize that low power run is jumped
Enter bipolar locking under isolated island mode, the booting number of units of hydropower generator can be efficiently reduced, increase unit output makes unit
Vibrating area is detached from, thoroughly solves the problems, such as hydropower generator dry season underrun.
Description of the drawings
Fig. 1 is that the HVDC transmission system low power run that provides of the embodiment of the present invention one jumps into that isolated island mode is bipolar to close
The flow chart of locking method；
Fig. 2 is the social function theory for realizing HVDC transmission system islet operation bipolar locking；
Fig. 3 jumps into that isolated island mode is bipolar to close for HVDC transmission system low power run provided by Embodiment 2 of the present invention
The composition schematic diagram of locking device；
Fig. 4 is the function interface signal that HVDC transmission system low power run jumps into isolated island mode bipolar locking device
Figure.
Specific embodiment
Present disclosure is described in further details with reference to the accompanying drawings and detailed description.
Embodiment one：
As shown in fig.1, it is double to jump into isolated island mode for HVDC transmission system low power run provided in this embodiment
The flow chart of pole blocking method, specifically, this method comprises the following steps：
S1, the dc power threshold value of DC transmission system, the direct current of DC transmission system are set in HMI (man-machine interface)
The handoff delay value for control system of standing and locking delay value, can be effectively by being provided with handoff delay value and locking delay value
Prevent direct current station from controlling system malfunction；Wherein, which is configured with two sets of direct current station control systems, respectively primary straight
Stream station control system and spare direct current station control system, and direct current station control system and spare direct current station control system are the prior art,
During original state, primary direct current station control system carries out work operation；
Whether S2, detection alternating current interconnection road disconnect, and show that DC transmission system enters if alternating current interconnection road disconnects
Island operation state, meanwhile, if the bipolar DC total power value of DC transmission system is less than the dc power door of step S1 settings
Threshold value then shows that primary direct current station control system has the primary condition for realizing that low power run jumps into bipolar locking under isolated island mode
And when alternating current interconnection power is less than the definite value time is adjusted up to 50ms, that is, its function is activated, primary direct current station control system has
Realize that low power run is jumped under isolated island mode after the primary condition of bipolar locking, the time reaches the handoff delay of step S1 settings
Value, then enter step S3；
S3, DC transmission system direct current station control system spare direct current station control system is switched to by primary direct current station control system
System, at this point, spare direct current station control system also has the primary condition for realizing that low power run jumps into bipolar locking under isolated island mode,
Using the regular hour, i.e., when delay time reaches the locking delay value of step S1 settings, the direct current of DC transmission system is double
Pole is latched, and DC transmission system is stopped transport, while direct current station control system sends out complete cut and exchanges filtering order, to prevent DC bipolar from closing
Occurs overvoltage damage equipment after lock.
Meanwhile it can understand this method with reference to social function theory shown in Fig. 2.
It can be seen from the above, by using method provided in this embodiment, HVDC transmission system can be realized automatically
Low power run jumps into bipolar locking under isolated island mode, can efficiently reduce booting number of units, the increase machine of hydropower generator
Group, which is contributed, makes unit be detached from vibrating area, thoroughly solves the problems, such as hydropower generator dry season underrun
Wherein, above-mentioned dc power threshold value may be configured as 500-1000MW, and handoff delay value may be configured as 300-
800ms, locking delay value may be configured as 800-1200ms, and specifically, in the present embodiment, dc power threshold value is set as
600MW, handoff delay value are set as 500ms, and locking delay value is set as 1000ms.
Embodiment two
As shown in fig.3, the present embodiment, which additionally provides HVDC transmission system low power run, jumps into isolated island mode pair
Pole blocking device, as shown in fig.3, the device includes：
Setup unit, including for set the power setting module of the dc power threshold value of DC transmission system, use
In the handoff delay setting module of the direct current station control system switching of setting DC transmission system and for setting DC power transmission system
The locking delay adjustments module of the DC bipolar block of system；Wherein, which is configured with two sets of direct current station control systems,
Respectively primary direct current station control system and spare direct current station control system, primary direct current station control system and spare direct current station control system are equal
For the prior art, during original state, primary direct current station control system carries out work operation.
Alternating current interconnection road detection unit is used to detect whether alternating current interconnection road disconnects.
Power detecting unit is used to detect the bipolar DC general power of DC transmission system.
System switch unit is controlled at direct current station, is set respectively with alternating current interconnection road detection unit, power detecting unit, power
Cover half block and handoff delay setting module are connected, when detection unit detects the disconnection of alternating current interconnection road and power detection list
Member detects that the bipolar DC general power of DC transmission system reaches less than the performance number of power setting module setting and time and cuts
When changing the time value of delay adjustments module setting, direct current station controls system switch unit and the direct current station of DC transmission system is controlled system
Spare direct current station control system is switched to by primary direct current station control system；
DC bipolar block unit is connected with locking delay adjustments module and direct current station control system switch unit,
When time after control system switches successfully when the direct current station of DC transmission system reaches the value of locking delay adjustments module setting, directly
Stream bipolar locking unit causes the bipolar locking of DC transmission system, and DC transmission system is stopped transport；The system hair of direct current station control simultaneously
Go out it is complete cut exchange filtering order, to there is overvoltage damage equipment after preventing DC bipolar block.
One kind as the present embodiment is preferably put into as shown in figure 4, above-mentioned setup unit further includes for initialization system
The input setting module of operation and for initialization system it is out of service exit setting module.
Wherein, the set value of the power of above-mentioned power setting module may be set to 500-800MW, handoff delay setting module
Handoff delay setting value may be set to 300-800ms, the locking delay adjustments value of locking delay adjustments module may be set to
800-1200ms, specifically, in the present embodiment, the set value of the power of power setting module is 600MW, and handoff delay sets mould
The handoff delay setting value of block is 500ms, and the locking delay adjustments value of locking delay adjustments module is 1000ms.
Above-described embodiment is in the art the purpose is to be to allow simply to illustrate that the technical concepts and features of the present invention
Those of ordinary skill can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent variation or modification made according to the essence of the content of present invention, should all covers within the scope of the present invention.
Claims (7)
1. HVDC transmission system low power run jumps into isolated island mode bipolar locking method, which is characterized in that the method
Include the following steps：
S1, set the dc power threshold value of DC transmission system, DC transmission system direct current station control system handoff delay
Value and locking delay value；Wherein, the DC transmission system is configured with two sets of direct current station control systems, respectively primary direct current station
Control system and spare direct current station control system；
Whether S2, detection alternating current interconnection road disconnect, if alternating current interconnection road disconnects and the bipolar DC of DC transmission system is total
Performance number is less than the dc power threshold value of step S1 settings and the time reaches the handoff delay value of step S1 settings, then enters step
Rapid S3；
S3, DC transmission system direct current station control system spare direct current station switched to by primary direct current station control system control system, cut
Change into the time after work(reach step S1 setting locking delay value when, DC transmission system bipolar locking, at the same direct current station control
System sends out complete cut and exchanges wave filter order.
2. HVDC transmission system low power run as described in claim 1 jumps into isolated island mode bipolar locking method,
It is characterized in that, the dc power threshold value is 500-1000MW, and handoff delay value is 300-800ms, and locking delay value is
800-1200ms。
3. HVDC transmission system low power run as claimed in claim 2 jumps into isolated island mode bipolar locking method,
It is characterized in that, the dc power threshold value is 600MW, and handoff delay value is 500ms, and locking delay value is 1000ms.
4. HVDC transmission system low power run jumps into isolated island mode bipolar locking device, which is characterized in that including：
Setup unit, including for set the dc power threshold value of DC transmission system power setting module, for setting
Determine the handoff delay setting module of the direct current station control system switching of DC transmission system and for setting DC transmission system
The locking delay adjustments module of bipolar locking；Wherein, the DC transmission system is configured with two sets of direct current station control systems, respectively
Primary direct current station control system and spare direct current station control system；
Alternating current interconnection road detection unit is used to detect whether alternating current interconnection road disconnects；
Power detecting unit is used to detect the bipolar DC general power of DC transmission system；
Direct current station control system switch unit, respectively with alternating current interconnection road detection unit, power detecting unit, power setting mould
Block and handoff delay setting module are connected, when detection unit detects that alternating current interconnection road disconnects and power detecting unit is examined
The bipolar DC general power for measuring DC transmission system reaches switching and prolongs less than the performance number of power setting module setting and time
When setting module setting time value when, direct current station controls system switch unit and the direct current station of DC transmission system is controlled system by leading
Spare direct current station control system is switched to direct current station control system；
DC bipolar block unit is connected with locking delay adjustments module and direct current station control system switch unit, when straight
When time after the direct current station control system handover success of stream transmission system reaches the value of locking delay adjustments module setting, direct current is double
Pole locking unit causes DC transmission system bipolar locking, and DC transmission system is stopped transport；The system of direct current station control simultaneously is sent out cuts entirely
Exchange wave filter order.
5. HVDC transmission system low power run as claimed in claim 4 jumps into isolated island mode bipolar locking device,
It is characterized in that, the setup unit further includes the input setting module that puts into operation for initialization system and for initialization system
Out of service exits setting module.
6. HVDC transmission system low power run as claimed in claim 4 jumps into isolated island mode bipolar locking device,
It is characterized in that, the set value of the power of the power setting module is 500-1000MW, the handoff delay of handoff delay setting module
Setting value is 300-800ms, and the locking delay adjustments value of locking delay adjustments module is 800-1200ms.
7. HVDC transmission system low power run as claimed in claim 6 jumps into isolated island mode bipolar locking device,
It is characterized in that, the set value of the power of the power setting module is 600MW, the handoff delay setting value of handoff delay setting module
For 500ms, the locking delay adjustments value of locking delay adjustments module is 1000ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378434.5A CN108258661B (en) | 2017-12-19 | 2017-12-19 | HVDC transmission system jumps into isolated island mode bipolar locking method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378434.5A CN108258661B (en) | 2017-12-19 | 2017-12-19 | HVDC transmission system jumps into isolated island mode bipolar locking method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108258661A true CN108258661A (en) | 2018-07-06 |
| CN108258661B CN108258661B (en) | 2019-10-11 |
Family
ID=62723643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711378434.5A Expired - Fee Related CN108258661B (en) | 2017-12-19 | 2017-12-19 | HVDC transmission system jumps into isolated island mode bipolar locking method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108258661B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589023A (en) * | 2020-04-30 | 2021-11-02 | 南京南瑞继保电气有限公司 | Method and device for rapidly detecting single set of abnormal alternating current measurement of redundant system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133026A (en) * | 1976-02-13 | 1979-01-02 | Bbc, Aktiengesellschaft Brown, Boveri & Cie | Method of starting up a high-voltage d-c inverter or transmission station in isolated or island operation |
| CN205724928U (en) * | 2016-03-01 | 2016-11-23 | 中国南方电网有限责任公司电网技术研究中心 | A kind of straight-flow system |
| CN107086560A (en) * | 2017-06-23 | 2017-08-22 | 南方电网科学研究院有限责任公司 | The method of locking direct current, system and direct current station control cabinet under a kind of isolated island low-power |
-
2017
- 2017-12-19 CN CN201711378434.5A patent/CN108258661B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4133026A (en) * | 1976-02-13 | 1979-01-02 | Bbc, Aktiengesellschaft Brown, Boveri & Cie | Method of starting up a high-voltage d-c inverter or transmission station in isolated or island operation |
| CN205724928U (en) * | 2016-03-01 | 2016-11-23 | 中国南方电网有限责任公司电网技术研究中心 | A kind of straight-flow system |
| CN107086560A (en) * | 2017-06-23 | 2017-08-22 | 南方电网科学研究院有限责任公司 | The method of locking direct current, system and direct current station control cabinet under a kind of isolated island low-power |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113589023A (en) * | 2020-04-30 | 2021-11-02 | 南京南瑞继保电气有限公司 | Method and device for rapidly detecting single set of abnormal alternating current measurement of redundant system |
| CN113589023B (en) * | 2020-04-30 | 2024-04-30 | 南京南瑞继保电气有限公司 | Rapid detection method and device for single-set alternating current measurement abnormality of redundant system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108258661B (en) | 2019-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2719067B1 (en) | Method for energizing a chain-link converter, controller, computer programs and computer program products | |
| CN105484937B (en) | Control method and device for variable pitch system of wind generating set | |
| CN104827921A (en) | Startup control method and startup control system of electric vehicle, and electric vehicle having same | |
| EP3264550A1 (en) | Access control method for parallel direct current power supplies and device thereof | |
| CN106877311A (en) | A kind of direct current photovoltaic generating system | |
| CN203352250U (en) | Double-input uninterruptible power supply system | |
| CN108215905A (en) | A kind of high voltage power battery pack application system wakes up system | |
| CN105610184B (en) | A kind of wind power generating set high voltage crossing control method | |
| CN102545375B (en) | Automatic switching on/off method for emergency power supply of power plant | |
| CN104052148A (en) | Automatic switching and automatic recovery method and device suitable for diesel generator | |
| CN108258661B (en) | HVDC transmission system jumps into isolated island mode bipolar locking method and device | |
| CN206431476U (en) | A kind of exigency stop system of slab burn off line | |
| CN103117592A (en) | 220kV spare power automatic switching system and judgment method for bus tie spare power automatic switching mode of spare power automatic switching device | |
| CN107086553B (en) | Control protection method and system for direct current transmission system | |
| US20200274350A1 (en) | Emergency shutdown of an energy supply unit | |
| CN203434917U (en) | Motor fault tolerance driving control system capable of automatic fault repairing | |
| CN205336129U (en) | Main and secondary integrative deflector with redundancy protection function | |
| CN107196404A (en) | A kind of UPS devices and its power supply method for handover control | |
| CN105356585B (en) | Closing locking circuit of breaker | |
| CN109638795B (en) | Emergency stop control method and device for string type photovoltaic inverter system | |
| CN105425103B (en) | A kind of extra-high voltage direct-current transmission bipolar line failure restarts coordination function improved method and system | |
| CN105270181A (en) | Intermediate relay control device, and control method thereof, and high-voltage power-down control method | |
| CN106505566A (en) | Control method and system that after avoiding partial electric grid off-the-line, occurrence of large-area has a power failure | |
| CN104065323B (en) | PWM Generator High Voltage Inverter Control System, method and high voltage converter | |
| CN205753609U (en) | A kind of work frequency conversion switching control and high voltage converter |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191011 Termination date: 20201219 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |