CN106953306B - A kind of power distribution network distributed fault self-healing control method - Google Patents
A kind of power distribution network distributed fault self-healing control method Download PDFInfo
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- CN106953306B CN106953306B CN201710353334.0A CN201710353334A CN106953306B CN 106953306 B CN106953306 B CN 106953306B CN 201710353334 A CN201710353334 A CN 201710353334A CN 106953306 B CN106953306 B CN 106953306B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004891 communication Methods 0.000 claims abstract description 36
- 238000009472 formulation Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 101150005009 STUA gene Proteins 0.000 claims description 30
- 101150109818 STU1 gene Proteins 0.000 claims description 20
- 101100204269 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) STU2 gene Proteins 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 4
- 238000012790 confirmation Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 4
- 125000004122 cyclic group Chemical group 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
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
- H02H7/28—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 meshed systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/063—Details concerning the co-operation of many similar arrangements, e.g. in a network
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Abstract
The present invention provides a kind of power distribution network distributed fault self-healing control methods, step includes: the delay and error condition by regional agency distribution terminal timing query communication network, communication network is divided into three-level according to delay and error code, if network delay is less than 10ms and short byte without error code, A grades of network notifications are issued；If network delay is between 10 ~ 100ms and short byte is without error code, B and network notifications are issued；If network delay, which is greater than 100ms or short byte, error code, C grades of network notifications are issued；Corresponding FA strategy is enabled according to the network notifications grade of publication, A grades use query formulation FA, and B grades use permissive type FA, and C grades using control model on the spot.The power distribution network distributed fault self-healing control method can utmostly restore electricity section, improve power supply reliability.
Description
Technical field
The present invention relates to a kind of electric network fault self-healing methods, especially a kind of power distribution network distributed fault self-healing control side
Method.
Background technique
Distributed AC servo system speed is fast, can effectively improve distribution network reliability, has obtained wide application in recent years,
Communication network is most important in distributed AC servo system, difficult in maintenance because communication network influence factor is more, and it is distributed to become restriction
The key factor of application.
But in distributed fault self-healing system, be easiest to break down is exactly communication network, when communication network is sent out
When raw failure, distributed system cannot achieve the peer-to-peer communications between device, at this time in case of line fault, entire fault self-recovery
Logic will be chaotic, causes whole line outage.
Summary of the invention
The technical problem to be solved by the present invention is in distributed fault self-healing system communication network be easiest to break down,
Once entire fault self-recovery logical miss, will cause whole line outage.
In order to solve the above-mentioned technical problems, the present invention provides a kind of power distribution network distributed fault self-healing control method, packets
Include following steps:
Step 1, the delay by regional agency distribution terminal timing query communication network and error condition, according to delay and accidentally
Communication network is divided into three-level by code, if network delay is less than 10ms and short byte without error code, issues A grades of network notifications；If net
Network delay is between 10~100ms and short byte is without error code, then issues B grades of network notifications；If network delay be greater than 100ms or
Short byte has error code, then issues C grades of network notifications；
Step 2, corresponding FA strategy is enabled according to the network notifications grade of publication, A grades use query formulation FA, B grades of uses
FA, C grades of permissive type using control model on the spot.
As a further limited solution of the present invention, in step 2, the specific steps of query formulation FA execution are as follows:
Step 211, the whether faulty electric current stream of distribution terminal active inquiry adjacent end that fault current flows through is detected
It crosses；
Step 212, after query terminal receives querying command, inquiry distribution terminal is replied；
Step 213, inquiry distribution terminal judges fault section, active isolation failure according to commands in return；
Step 214, inquiry distribution terminal determine fault section after, to adjacent end issue telecommand, complete failure every
From；
Step 215, inquiry distribution terminal sends contact to interconnection switch for instruction is thrown, completes after confirmation is isolated successfully
The service restoration of trouble point downstream section.
As a further limited solution of the present invention, in step 2, the specific steps of permissive type FA execution are as follows:
Step 221, the distribution terminal that fault current flows through is detected, to 4 deuterzooid terminal fault information of Web realease, publication
Moment is 0s, 10ms, 20ms and 40ms after failure occurs；
Step 222, the distribution terminal for detecting fault current can not receive the fault message of downstream endpoint within 100ms,
Then starting tripping after the fault message for receiving downstream endpoint in 100ms, is then latched tripping；
Step 223, after each distribution terminal receives fault message on route, inquire this terminal in the same time whether
Detected stream information；
Step 224, distribution terminal determines fault zone according to the current information of the network information and this distribution terminal, and according to
Fault zone determines whether to execute the tripping of this distribution terminal；
Step 225, the distribution terminal after tripping will trip information to Web Publishing；
Step 226, after interconnection switch receives tripping information, automatic starting contact is standby to throw instruction, completes trouble point downstream
The service restoration of section.
As a further limited solution of the present invention, in step 2, on the spot control model execute specific steps are as follows:
Step 231, when breaking down, the distribution terminal that fault current flows through is detected, be delayed T0 starting tripping；
Step 232, it according to power supply direction, successively closes a floodgate since upstream, differential is T1；
Step 233, it closes a floodgate to the distribution terminal in failure, accelerates tripping, and be latched.
As a further limited solution of the present invention, in step 1, by regional agency distribution terminal timing query communication network
Delay and error condition specific steps are as follows:
Step a selects STUA for regional agency distribution terminal, is responsible for initiating network inquiry order, STUA is sent to STU1
Communication network querying command, content include the present clock of originator address and promoter；
Step b, after STU1 receives the querying command of STUA, after the address of STU1 and present clock are added in order, to
Its adjacent STU2 sends communication network querying command；
Step c analogizes step b, until querying command is sequentially sent to the distribution terminal STUB of end, by distribution terminal STUB
After address and real-time clock are added, it is sent to inquiry terminal STUA.
The beneficial effects of the present invention are: when communicating intact, fault self-recovery effect realizes most quick, optimization, logical
When believing unstable, part fault self-recovery function is realized, system will not cause malfunction, when communication is unsatisfactory for FA condition,
Using treatment in situ mode, the reliability of distributed system application ensure that；It overcomes in distributed processing system(DPS) to communication
It depends on unduly, provides a kind of processing method optimal when communicating outlet failure, realize scope of power outage minimum, method letter
Single and easily realization.
Detailed description of the invention
Fig. 1 is open loop operation cable ring-system rapidly self-healing system structure diagram of the invention.
Specific embodiment
As shown in Figure 1, the cable ring-system rapidly self-healing system for the open loop operation implemented for the present invention, specific implementation step is such as
Under:
One, network topology is established, when device is installed, the network of adjacent distribution terminal is manually configured for each distribution terminal
Location；
Two, communication network real-time detection, when system is run, timing carries out communication efficient detection, and specific detection method is:
Channel inquiry instruction is issued from regional agency terminal (generally wire-outgoing breaker controller) STUA to adjacent distribution terminal STU1,
The instruction includes the address of the present clock information of STUA and the STUA of initiation inquiry instruction, and STU1 is receiving STUA sending
After instruction, oneself address and current time are added in instruction tail portion, issues the adjacent distribution terminal STU2 of STU1, successively class
It pushes away, until finding oneself to be end-terminal, then directly to inquiry STUA after STUB is connected to the instruction and is added to self information
Return to complete query result.After STUA receives query result, every section of communication delay and communication bit error rates will be checked,
According to communication delay and bit error rate situation, adjust automatically distribution FA strategy；After STUA receives complete instruction, starting communication is looked into
Timer is ask, start by set date is inquired next time.
Three, fault treating procedure experiences the distribution terminal of fault current to network when short trouble occurs for power distribution network
Upper publication fault message message, failure message include fault type, fault current and fault time, the distribution terminal in local area network
After receiving failure message, the overcurrent condition of terminal in the period is inquired, is matched according to the inquiry of the record information of this distribution terminal overcurrent
To information, failure boundary is searched, is executed according to preset action logic.
Q31 is interconnection switch in Fig. 1, selects STUA for regional agency distribution terminal first, is responsible for initiating network inquiry
Order.STUA sends communication network querying command to STU1, and content includes the present clock of originator address and promoter；STU1
After the querying command for receiving STUA, after the address of STU1 and present clock are added in order, the STU2 adjacent to its sends logical
Communication network querying command；And so on, until querying command is sent to end STUB；Address and real-time clock are added it by STUB
Afterwards, it is sent to inquiry STUA.
After inquiry STUA receives complete inquiry response order, calculates communication delay and check error code, if STUA
The replying instruction that can not receive STUB in regulation delay, then directly issue C grades of network notifications.
Network efficiency inspection: after the communication network that regional agency distribution terminal STUA receives return searches order, root
Allow to be delayed according to preset network, checks whether network is good, communication network is classified according to detection case, setting network
Average delay within 10ms and without error code be A grade, be greater than 10ms and be less than 100ms and without error code be B grades, 100ms or more or
It is C grades that person, which has error code,.
Regional agency STUA distribution terminal is according to the current distribution FA processing strategie of network classification situation real-time release, communication
When network is A grades, query formulation FA mode is enabled, when communication network is B grades, enables permissive type FA mode, communication network is C grades
When, enable treatment in situ mode.
Such as Fig. 1, query formulation FA mode executes specific steps are as follows:
Interconnection switch is Q31, and when F1 point breaks down, STU1 detects that fault current flows through；It is whole to inquire adjacent distribution
The end whether faulty electric current of STUA and STU2 flows through；STUA returns to fault message, and STU2 returns to fault-free information；STU1 is according to returning
Breath of writing in reply determines fault point between STU1 and STU2；STU1 tripping, is simultaneously emitted by telecommand, and order STU2 tripping is completed
Fault Isolation；For STU1 after confirmation is isolated successfully, STU1 sends the standby throwing instruction of contact to interconnection switch, completes trouble point downstream area
The service restoration of section.
Such as Fig. 1, permissive type FA mode executes specific steps are as follows:
Interconnection switch is Q31, and when F1 point breaks down, STU1 detects that fault current flows through, to 4 deuterzooid of Web realease
Terminal fault information, publication moment are 0s, 10ms, 20ms, 40ms after failure occurs；STUA detects that fault current flows through, to
4 deuterzooid terminal fault information of Web realease, publication moment are 0s, 10ms, 20ms, 40ms after failure occurs；Detect failure electricity
The distribution terminal of stream, can not receive the fault message of downstream endpoint within 100ms, and starting tripping receives the event of downstream endpoint
After hindering information, locking tripping；After each STU receives fault message on route, whether inquiry detected in the same time
Stream information；STUA detected stream information, and STU2 is without stream information excessively；According to logic of propositions, STUA does not trip, STU2 tripping isolation
Failure；STU2 will trip information to Web Publishing；After interconnection switch Q31 receives the tripping information of STU2, automatic starting contact
It is standby to throw instruction, complete the service restoration of trouble point downstream section.
Control model executes specific steps on the spot are as follows:
Interconnection switch is Q31, and when F1 point breaks down, STUA, STU1 detect that fault current flows through, delay T0 starting
Tripping；The delay T1 time closes a floodgate after STUA tripping；The delay 2T1 time closes a floodgate after STU2 tripping；It is assumed that F1 point is permanent fault,
STU2 closes a floodgate onto failure, accelerates tripping, and be latched.
Compared with existing method, the beneficial effects of the present invention are: quickly isolating failure, communication is not when 1, communication network is good
When stablizing, system perturbations will not be caused, the power supply 2, highly-safe in non-faulting region can be restored to greatest extent, communication network is not
When stablizing, using permissive type FA, distribution terminal combines logical action itself according to the network information, and it is dynamic not control other distribution terminals
Make, does not also receive the control command of other terminals.Can utmostly be restored electricity section, improve power supply reliability.
Above-mentioned function can be realized using existing distribution terminal in distribution terminal of the invention, and the invention reside in distribution end
The reasonable disposition at end utilizes, thus in realization system open loop operation cable ring-system rapidly self-healing.
Claims (4)
1. a kind of power distribution network distributed fault self-healing control method, which comprises the steps of:
Step 1, the delay by regional agency distribution terminal timing query communication network and error condition, will according to delay and error code
Communication network is divided into three-level, if network delay is less than 10ms and short byte without error code, issues A grades of network notifications；If network prolongs
When between 10~100ms and short byte is without error code, then issue B grades of network notifications；If network delay is greater than 100ms or short word
Section has error code, then issues C grades of network notifications；
Step 2, corresponding FA strategy is enabled according to the network notifications grade of publication, A grades use query formulation FA, and B grades using permission
FA, C grades of formula using control model on the spot；
In step 2, the specific steps of permissive type FA execution are as follows:
Step 221, it detects the distribution terminal that fault current flows through, to 4 deuterzooid terminal fault information of Web realease, issues the moment
0s, 10ms, 20ms and 40ms after occurring for failure；
Step 222, the distribution terminal for detecting fault current can not receive the fault message of downstream endpoint within 100ms, then open
It is dynamic to trip, after the fault message that downstream endpoint is received in 100ms, then it is latched tripping；
Step 223, after each distribution terminal receives fault message on route, inquire whether this terminal detects in the same time
Arrived stream information；
Step 224, distribution terminal determines fault zone according to the current information of the network information and this distribution terminal, and according to failure
Region determines whether to execute the tripping of this distribution terminal；
Step 225, the distribution terminal after tripping will trip information to Web Publishing；
Step 226, after interconnection switch receives tripping information, automatic starting contact is standby to throw instruction, completes trouble point downstream section
Service restoration.
2. power distribution network distributed fault self-healing control method according to claim 1, which is characterized in that in step 2, inquiry
The specific steps that formula FA is executed are as follows:
Step 211, the whether faulty electric current of distribution terminal active inquiry adjacent end for detecting that fault current flows through flows through；
Step 212, after query terminal receives querying command, inquiry distribution terminal is replied；
Step 213, inquiry distribution terminal judges fault section, active isolation failure according to commands in return；
Step 214, after inquiry distribution terminal determines fault section, telecommand is issued to adjacent end, completes Fault Isolation；
Step 215, inquiry distribution terminal sends contact to interconnection switch for instruction is thrown, completes failure after confirmation is isolated successfully
The service restoration of point downstream section.
3. power distribution network distributed fault self-healing control method according to claim 1, which is characterized in that in step 2, on the spot
The specific steps that control model executes are as follows:
Step 231, when breaking down, the distribution terminal that fault current flows through is detected, be delayed T0 starting tripping；
Step 232, it according to power supply direction, successively closes a floodgate since upstream, differential is T1；
Step 233, it closes a floodgate to the distribution terminal in failure, accelerates tripping, and be latched.
4. power distribution network distributed fault self-healing control method according to claim 1, which is characterized in that in step 1, by area
Act on behalf of the delay of distribution terminal timing query communication network and the specific steps of error condition in domain are as follows:
Step a selects STUA for regional agency distribution terminal, is responsible for initiating network inquiry order, STUA sends to STU1 and communicates
Network inquiry order, content include the present clock of originator address and promoter；
Step b, after STU1 receives the querying command of STUA, after the address of STU1 and present clock are added in order, Xiang Qixiang
Adjacent STU2 sends communication network querying command；
Step c analogizes step b, until querying command is sequentially sent to the distribution terminal STUB of end, by distribution terminal STUB by ground
After location and real-time clock add, it is sent to inquiry terminal STUA.
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| CN109449895B (en) * | 2018-11-21 | 2020-01-14 | 北京四方继保自动化股份有限公司 | Distributed self-healing control method suitable for breaker load switch hybrid power distribution network |
| CN114336545B (en) * | 2021-12-15 | 2024-06-21 | 北京科锐配电自动化股份有限公司 | Distributed protection method with adaptive communication rate capability and computer readable storage medium |
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| CN101867223A (en) * | 2010-04-08 | 2010-10-20 | 浙江省电力试验研究院 | Automatic system fault handling method of distribution network containing a plurality of distributed power supplies |
| CN102185300A (en) * | 2011-05-24 | 2011-09-14 | 安徽中兴继远信息技术有限公司 | On-spot feeder automation equipment and realizing method thereof |
| CN103532794A (en) * | 2013-10-29 | 2014-01-22 | 南京南瑞集团公司 | Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment |
| CN104184633A (en) * | 2014-09-11 | 2014-12-03 | 国家电网公司 | Intelligent power distribution terminal and communication quality detection method |
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- 2017-05-18 CN CN201710353334.0A patent/CN106953306B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867223A (en) * | 2010-04-08 | 2010-10-20 | 浙江省电力试验研究院 | Automatic system fault handling method of distribution network containing a plurality of distributed power supplies |
| CN102185300A (en) * | 2011-05-24 | 2011-09-14 | 安徽中兴继远信息技术有限公司 | On-spot feeder automation equipment and realizing method thereof |
| CN103532794A (en) * | 2013-10-29 | 2014-01-22 | 南京南瑞集团公司 | Method for automatically switching stable control strategies based on warning signals of synchronous digital hierarchy equipment |
| CN104184633A (en) * | 2014-09-11 | 2014-12-03 | 国家电网公司 | Intelligent power distribution terminal and communication quality detection method |
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