CN108226712A - A kind of distribution network failure processing method - Google Patents
A kind of distribution network failure processing method Download PDFInfo
- Publication number
- CN108226712A CN108226712A CN201810066497.5A CN201810066497A CN108226712A CN 108226712 A CN108226712 A CN 108226712A CN 201810066497 A CN201810066497 A CN 201810066497A CN 108226712 A CN108226712 A CN 108226712A
- Authority
- CN
- China
- Prior art keywords
- distribution terminal
- distribution
- network
- direct current
- flexible direct
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/088—Aspects of digital computing
Abstract
The application provides a kind of distribution network failure processing method.The method includes：Monitor in power distribution network whether faulty feature is generated by each distribution terminal in power distribution network；Using power distribution network connection flexible direct current device by current control within a predetermined range；Whether monitored using each distribution terminal by the electric current of itself is reversed constant current；Using monitoring to generate off-network enabling signal, and to other distribution terminal multicasts by distribution terminal of the electric current of itself for negative direction constant current；It in distribution terminal, will monitor that the distribution terminal that its upstream distribution terminal does not generate off-network enabling signal is determined as breaking distribution terminal, start its breaker using breaking distribution terminal, off-network switching command is sent to flexible direct current device；Off-network switching command is performed using flexible direct current device, breaking distribution terminal to the circuit between flexible direct current device is switched to off-grid operation pattern.Using embodiment each in the application, the safety and reliability of power distribution network can be effectively improved.
Description
Technical field
This application involves distribution network technology field, more particularly to a kind of distribution network failure processing method.
Background technology
With being constantly progressive for society, people have higher requirement to the continuity of power supply, safety and reliability.
Therefore, the failure in power distribution network how is detected efficiently and effectively and is quickly and effectively handled, for ensureing that power distribution network supplies
It is the continuity of electricity, most important for safety and reliability.
Flexible direct current device is the important equipment for building intelligent grid, still, in the prior art, is filled for containing flexible direct current
The active distribution network put lacks effective Fault Locating Method, this results in the continuity of existing power distribution network power supply, safety
It is relatively low with reliability.
At least there are the following problems in the prior art：For the active distribution network of the device containing flexible direct current, lack effective
Fault Locating Method, this results in the continuity of existing power distribution network power supply, safety and reliability relatively low.
Invention content
The purpose of the embodiment of the present application is to provide a kind of distribution network failure processing method, and the express delivery of trouble point is determined with realizing
Position, and ensure the off-grid operation of fault zone while trouble point downstream region is effectively isolated, so as to effectively improve power distribution network
Safety and reliability.
The embodiment of the present application provides what a kind of distribution network failure processing method was realized in：
A kind of distribution network failure processing method, the method includes：
Monitor in the power distribution network whether faulty feature is generated by each distribution terminal in the power distribution network；
When the fault signature generates, using power distribution network connection flexible direct current device by current control within a predetermined range；
Whether monitored using each distribution terminal by the electric current of itself is negative direction electric current；
Using the distribution terminal generation off-network enabling signal monitored by the electric current of itself for negative direction electric current, and match to other
Off-network enabling signal described in electric terminals multicast；
Monitor whether its upstream distribution terminal generates off-network enabling signal using each distribution terminal；
It in each distribution terminal, will monitor that the distribution terminal that its upstream distribution terminal does not generate off-network enabling signal determines
For breaking distribution terminal, start its breaker, and off-network is sent to the flexible direct current device using the breaking distribution terminal
Switching command；
The off-network switching command is performed using the flexible direct current device, by the breaking distribution terminal to the flexible direct current
Circuit between device is switched to off-grid operation pattern.
In preferred embodiment, the open circuit distribution terminal starts its breaker, and to the flexible direct current device send from
The mode of net switching command, including：
The open circuit distribution terminal prolongs after determining that its upstream distribution terminal does not generate off-network enabling signal by scheduled
After the slow time, start its breaker, and off-network switching command is sent to the flexible direct current device.
In preferred embodiment, the circuit breaker trip be breaking distribution terminal distribution terminal adjacent with its upstream it
Between electric connection.
In preferred embodiment, monitor that not generating off-network for the distribution terminal of positive direction by the electric current of itself starts letter
Number.
In preferred embodiment, the fault signature includes at least：Line voltage is dropped to dashes forward less than low-voltage definite value, voltage
Become.
It is whole for the breaking distribution using the flexible direct current device under the off-grid operation pattern in preferred embodiment
End and downstream distribution terminal are powered, and ensure the breaking distribution terminal and the operation of distribution terminal downstream.
In preferred embodiment, the current direction of the negative direction electric current is：
The distribution terminal is directed toward from the flexible direct current device.
Using a kind of distribution network failure processing method provided by the embodiments of the present application, can quickly be monitored by each distribution terminal
Fault signature, and pass through flexible direct current device in real time by current control within a preset range, ensure the safety of power distribution network.And then
Coordinated by each distribution terminal, the position of trouble point is accurately positioned, and trouble point is cut to the circuit between flexible direct current device
Off-grid operation pattern is changed to, ensures effective operation of the distribution terminal of trouble point downstream using flexible direct current device.It is effectively quick
While fault point, the reliability and continuity of power distribution network power supply are in turn ensured.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or it will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in application, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of method flow schematic diagram for distribution network failure processing method that the application one embodiment provides；
Fig. 2 is the implement scene schematic diagram of a kind of distribution network failure processing method provided in one example of the application.
Specific embodiment
The embodiment of the present application provides a kind of distribution network failure processing method.
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical solution in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
Technical staff's all other embodiments obtained without creative efforts should all belong to the application protection
Range.
Fig. 1 is a kind of a kind of herein described method flow diagram of embodiment of distribution network failure processing method.Although this Shen
It please provide such as following embodiments or method operating procedure shown in the drawings, but based on conventional or exist without performing creative labour
It can include more or less operating procedures in the method or device.There is no necessary causal in logicality
In step, the execution of these steps sequence is not limited to the embodiment of the present application or shown in the drawings performs sequence.The method exists
Device or end product in practice according to embodiment or method shown in the drawings or modular structure in application, can carry out suitable
Sequence performs or parallel execution（Such as the environment of parallel processor or multiple threads, the reality for even including distributed treatment
Apply environment）.
Specifically as described in Figure 1, a kind of a kind of embodiment for distribution network failure processing method that the application provides can wrap
It includes：
S1：Monitor in the power distribution network whether faulty feature is generated by each distribution terminal in the power distribution network.
In this example, the fault signature can at least include：Line voltage is dropped to less than low-voltage definite value and voltage jump,
When line voltage, which is dropped to, to be occurred simultaneously less than low-voltage definite value and voltage jump, it may be determined that faulty spy in the power distribution network
Sign.
S2：When the fault signature generates, using the flexible direct current device of power distribution network connection by current control predetermined
In the range of.
S3：Whether each distribution terminal monitoring is negative direction electric current by the electric current of itself.
In this example, flexible direct current device direction will be directed toward from the distribution terminal and be defined as positive direction, it is corresponding, it is described anti-
The direction of directional current is to flow to each distribution terminal from the flexible direct current device or flowed to from the flexible direct current device
Trouble point.The negative direction is to be different from positive direction.
S4：Using the distribution terminal generation off-network enabling signal monitored by the electric current of itself for negative direction electric current, and
To off-network enabling signal described in other distribution terminal multicasts.
In this example, monitor not generating off-network enabling signal by distribution terminal of the electric current of itself for positive direction.
S5：Monitor whether its upstream distribution terminal generates off-network enabling signal using each distribution terminal.
Wherein, the upstream and downstream, be flowed through according to the positive direction electric current each distribution terminal priority it is suitable
What sequence divided, the distribution terminal that the positive direction electric current first passes through be after the positive direction electric current by distribution terminal upstream
Distribution terminal.It is corresponding, after the positive direction electric current by distribution terminal be that the distribution that first passes through of the positive direction electric current is whole
The downstream distribution terminal at end.
S6：It in each distribution terminal, will monitor that its upstream distribution terminal does not generate the distribution of off-network enabling signal
Terminal is determined as breaking distribution terminal, starts its breaker using the breaking distribution terminal, and to the flexible direct current device
Send off-network switching command.
Wherein, the distribution terminal for not generating off-network enabling signal is exactly to monitor by the sense of current of itself as just
The distribution terminal in direction.
Wherein, start the breaker, cut-out is between breaking distribution terminal distribution terminal adjacent with its upstream
Electric connection.
S7：The off-network switching command is performed using the flexible direct current device, by the breaking distribution terminal to described
Circuit between flexible direct current device is switched to off-grid operation pattern.
Wherein, it is whole to include the breaking distribution for the breaking distribution terminal to the circuit between the flexible direct current device
End.
In this example, after being switched to off-grid operation pattern, the flexible direct current device can be utilized whole for the breaking distribution
End and distribution terminal power supply downstream ensure the operation of the breaking distribution terminal and distribution terminal downstream.
It is powered by the flexible direct current device, continuing for power supply of the power distribution network after failure generation can be effectively ensured
Property.
In the application one embodiment, the open circuit distribution terminal starts its breaker, and to the flexible direct current device
The mode of off-network switching command is sent, can be included：
The open circuit distribution terminal prolongs after determining that its upstream distribution terminal does not generate off-network enabling signal by scheduled
After the slow time, start its breaker, and off-network switching command is sent to the flexible direct current device.
Wherein, the specific of the delay time determines that the application is not construed as limiting.Make a reservation for the delay time purpose be,
Erroneous judgement is prevented, further ensures the reliability of accuracy and the troubleshooting of breakdown judge.Therefore, during specific delay
Between, implementation personnel can voluntarily determine according to actual conditions.
Fig. 2 is the implement scene schematic diagram that method described herein is provided in one example of the application.With reference to Fig. 2
Described in implement scene, elaborate to the implementation of the method.
In rack of power distribution network as shown in Figure 2, illustratively including two distribution lines of A and B, pass through flexible direct current
Device is interconnected, and the three-stage overcurrent protection or distribution FA functions that each distribution terminal first wife puts remain unchanged, for trunk
In addition distribution terminal A1, A2, A4, A5, A7, A8, A10, A11 and B1, B2, B4, B5, B7, B8, B10, B11 on looped network etc. match
Soft front isolation control function is put, and communication modeling is carried out based on 61850 GOOSE mechanism, each outside multicast of distribution terminal is soft
The GOOSE signals such as front isolation enabling signal, soft straight off-network switching command, and the soft front isolation for subscribing to other distribution terminals is opened
Dynamic signal.
In this example, for A, B two lines road, flexible direct current device is directed toward as positive direction using distribution network system side, it is flexible straight
Device is flowed as circuit tip, and each distribution terminal is configured upstream-downstream relationship by this direction, upstream is followed successively by along the positive direction
To downstream, in Fig. 2, the sequence of A1, A2, A3 ... A11 is above swim over to downstream.
Specifically, when F1 points phase-to phase fault shown in figure, distribution terminal A5, A7, A8, A10, A11 monitor line
The fault signature of Voltage Drop and voltage jump.Using flexible direct current device, the electricity of trouble point will be directed toward from flexible direct current device
Flow control is in certain range.Distribution terminal A5, A7, A8, A10, A11 monitor constant for negative direction by the electric current of itself
Electric current, using described distribution terminal A5, A7, A8, A10, A11 generate off-network enabling signal, and to other distribution terminal multicasts from
Net enabling signal.At this moment, distribution terminal A5 will monitor that the distribution terminal of upstream does not generate off-network enabling signal, thus
Distribution terminal A5 is determined as breaking distribution terminal, starts its breaker using distribution terminal A5, disconnects the electricity between A4, A5
Road, and off-network switching command is sent to flexible direct current device, flexible direct current device receives off-network switching command, by A5 to flexibility
Circuit between flow directing device is switched to off-grid operation pattern, using flexible direct current device for distribution terminal A5, A7, A8, A10,
A11 powers.Everything process includes fault location, GOOSE information exchanges, switch trip and arc extinguishing, operational mode switches etc.
It can be completed in 150ms.It is the fault current of positive direction that A1, A2, A4 point distribution terminal is collected, is not interfered with original
Three-stage overcurrent, reclosing or distribution FA logics.If there is fault condition, embodiment and F1 in F2, F4 point in figure
Processing mode when point breaks down is similar.
When F3 point phase-to phase faults, distribution terminal A7, A8, A10, A11 detect that line voltage is fallen and voltage jump,
Under the control of flexible direct current device, the electric current that trouble point is directed toward by flexible direct current device is controlled within a certain range, A7, A8,
A10, A11 point distribution terminal collect the constant current of negative direction, generate off-network enabling signal, and to other distribution terminal multicasts
The off-network enabling signal of generation, soft front isolation control function is not configured in distribution terminal A6, since distribution terminal A6 is supervised
It measures upstream distribution terminal and does not start locking, distribution terminal A7 disconnects its breaker, and is sent to the flexible direct current device
Off-network switching command, flexible direct current device receive soft straight off-network switching command, by A7 between the flexible direct current device
Circuit is switched to off-grid operation mode, and with A7 to the load operation of circuit between flexible direct current device.
Using the embodiment of the method that the various embodiments described above provide, can quickly be monitored by each distribution terminal
Fault signature, and pass through flexible direct current device in real time by current control within a preset range, ensure the safety of power distribution network.And then
Coordinated by each distribution terminal, the position of trouble point is accurately positioned, and trouble point is cut to the circuit between flexible direct current device
Off-grid operation pattern is changed to, ensures effective operation of the distribution terminal of trouble point downstream using flexible direct current device.It can be effective
While quick fault point, and it can ensure the reliability and continuity of power distribution network power supply.
Each embodiment in this specification is described by the way of progressive, and the same or similar part is mutual between each embodiment
Mutually referring to the highlights of each of the examples are difference from other examples.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application there are many deformation and
Variation is without departing from spirit herein, it is desirable to which appended claim includes these deformations and changes without departing from the application's
Spirit.
Claims (7)
1. a kind of distribution network failure processing method, which is characterized in that the method includes：
Monitor in the power distribution network whether faulty feature is generated by each distribution terminal in the power distribution network；
When the fault signature generates, using power distribution network connection flexible direct current device by current control within a predetermined range；
Whether monitored using each distribution terminal by the electric current of itself is negative direction electric current；
Using the distribution terminal generation off-network enabling signal monitored by the electric current of itself for negative direction electric current, and match to other
Off-network enabling signal described in electric terminals multicast；
Monitor whether its upstream distribution terminal generates off-network enabling signal using each distribution terminal；
It in each distribution terminal, will monitor that the distribution terminal that its upstream distribution terminal does not generate off-network enabling signal determines
For breaking distribution terminal, start its breaker, and off-network is sent to the flexible direct current device using the breaking distribution terminal
Switching command；
The off-network switching command is performed using the flexible direct current device, by the breaking distribution terminal to the flexible direct current
Circuit between device is switched to off-grid operation pattern.
2. a kind of distribution network failure processing method as described in claim 1, which is characterized in that the open circuit distribution terminal starts
Its breaker, and to the flexible direct current device send off-network switching command mode, including：
The open circuit distribution terminal prolongs after determining that its upstream distribution terminal does not generate off-network enabling signal by scheduled
After the slow time, start its breaker, and off-network switching command is sent to the flexible direct current device.
3. a kind of distribution network failure processing method as claimed in claim 1 or 2, which is characterized in that the circuit breaker trip
It is the electric connection between breaking distribution terminal distribution terminal adjacent with its upstream.
4. a kind of distribution network failure processing method as described in claim 1, which is characterized in that monitor the electric current by itself
Distribution terminal for positive direction does not generate off-network enabling signal.
5. a kind of distribution network failure processing method as described in claim 1, which is characterized in that the fault signature at least wraps
It includes：Line voltage is dropped to less than low-voltage definite value, voltage jump.
6. a kind of distribution network failure processing method as described in claim 1, which is characterized in that under the off-grid operation pattern,
Using the flexible direct current device is the breaking distribution terminal and distribution terminal is powered downstream, ensure that the breaking distribution is whole
End and the operation of distribution terminal downstream.
A kind of 7. distribution network failure processing method as described in claim 1, which is characterized in that the electric current of the negative direction electric current
Direction is：The distribution terminal is directed toward from the flexible direct current device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066497.5A CN108226712B (en) | 2018-01-24 | 2018-01-24 | Fault processing method for power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810066497.5A CN108226712B (en) | 2018-01-24 | 2018-01-24 | Fault processing method for power distribution network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108226712A true CN108226712A (en) | 2018-06-29 |
| CN108226712B CN108226712B (en) | 2020-03-24 |
Family
ID=62668636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810066497.5A Active CN108226712B (en) | 2018-01-24 | 2018-01-24 | Fault processing method for power distribution network |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108226712B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270835A (en) * | 2011-01-30 | 2011-12-07 | 武汉百叡电力技术有限公司 | Distributed over-current protection and interphase fault isolation method for distribution network |
| CN102738777A (en) * | 2012-06-20 | 2012-10-17 | 广西电网公司电力科学研究院 | Rapid distribution network fault self-recovery method based on generic object oriented substation event (GOOSE) message |
| CN103308823A (en) * | 2013-05-23 | 2013-09-18 | 国家电网公司 | Method for locating single-phase disconnection non-ground fault of power distribution network |
| CN103606910A (en) * | 2013-12-06 | 2014-02-26 | 云南电网公司大理供电局 | Wide area information based fault self-healing method for dead zone of feeder outlet of distribution network |
| CN104701825A (en) * | 2015-03-11 | 2015-06-10 | 国家电网公司 | Quick protection method applicable to intelligent distribution network |
| CN104882867A (en) * | 2014-02-27 | 2015-09-02 | 国家电网公司 | Power distribution network self-healing control method and system |
| CN105896490A (en) * | 2016-05-17 | 2016-08-24 | 上海思源弘瑞自动化有限公司 | Fault processing method and device of power distribution network |
| CN106877317A (en) * | 2017-03-23 | 2017-06-20 | 天津大学 | The definition of flexible power distribution network, networking form, the method for operation and transition method |
-
2018
- 2018-01-24 CN CN201810066497.5A patent/CN108226712B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102270835A (en) * | 2011-01-30 | 2011-12-07 | 武汉百叡电力技术有限公司 | Distributed over-current protection and interphase fault isolation method for distribution network |
| CN102738777A (en) * | 2012-06-20 | 2012-10-17 | 广西电网公司电力科学研究院 | Rapid distribution network fault self-recovery method based on generic object oriented substation event (GOOSE) message |
| CN103308823A (en) * | 2013-05-23 | 2013-09-18 | 国家电网公司 | Method for locating single-phase disconnection non-ground fault of power distribution network |
| CN103606910A (en) * | 2013-12-06 | 2014-02-26 | 云南电网公司大理供电局 | Wide area information based fault self-healing method for dead zone of feeder outlet of distribution network |
| CN104882867A (en) * | 2014-02-27 | 2015-09-02 | 国家电网公司 | Power distribution network self-healing control method and system |
| CN104701825A (en) * | 2015-03-11 | 2015-06-10 | 国家电网公司 | Quick protection method applicable to intelligent distribution network |
| CN105896490A (en) * | 2016-05-17 | 2016-08-24 | 上海思源弘瑞自动化有限公司 | Fault processing method and device of power distribution network |
| CN106877317A (en) * | 2017-03-23 | 2017-06-20 | 天津大学 | The definition of flexible power distribution network, networking form, the method for operation and transition method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108226712B (en) | 2020-03-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106066450A (en) | There is the insulation monitor of voltage monitoring and method based on it | |
| CN108957243A (en) | A kind of method for locating single-phase ground fault and system applied to power distribution network | |
| CN101641849A (en) | Fuse saving power distribution system fault protection | |
| CN105896490B (en) | A kind of fault handling method and device of power distribution network | |
| JP2019527017A (en) | Method for controlling a device capable of transmitting a DC current in a network while protecting the network from short circuit failure | |
| KR20120096774A (en) | Power supply system and method using distributed power system | |
| JP2019537701A (en) | Method and apparatus for detecting failure of distribution network with high reliability, and storage medium | |
| CN104701825B (en) | A kind of fast protection method suitable for intelligent distribution network | |
| JPH08317548A (en) | Protective device for bipolar converting place in high- pressure dc transmission equipment | |
| EP2862252A1 (en) | A power bay protection device and a method for protecting power bays | |
| CN109061378A (en) | Small current neutral grounding system ground fault checks method | |
| CN110492477A (en) | A kind of loop network control device and control method | |
| CN107623308A (en) | A kind of suppressing method and system of AC network short circuit currents | |
| WO2022252701A1 (en) | Processing method for phase-to-phase short circuit of three-phase power system | |
| CN208127872U (en) | A kind of distribution network system with failure active process function | |
| CN103825363A (en) | Wind-solar low voltage storage micro-grid group protection coordinating controller | |
| CN108226712A (en) | A kind of distribution network failure processing method | |
| CN109361197A (en) | A kind of overcurrent protective device and method | |
| CN108616114B (en) | A kind of power distribution network distributed layer protection system and method for the group containing microgrid | |
| CN104135079A (en) | Failure processing method for intelligent power distribution network comprising distributed power supply | |
| CN104638619B (en) | A kind of control method cascading full-bridge direct current breaker control system | |
| JP2007037354A (en) | Independent operation preventing device | |
| JP2017017832A (en) | Server device | |
| CN111817353B (en) | Power distribution network equipment fault processing method | |
| CN112736872B (en) | Power distribution network protection control strategy optimization method based on real-time analysis of operation mode |
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 |