CN103051059B - Feeder automation realizing method for residential area with smart distribution network - Google Patents
Feeder automation realizing method for residential area with smart distribution network Download PDFInfo
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- 239000013307 optical fiber Substances 0.000 claims description 8
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Abstract
The invention discloses a feeder automation realizing method for a residential area with a smart distribution network. The method comprises the following steps of: acquiring the number of circuit breakers, the serial numbers of all the circuit breakers, and the serial numbers and the physical positions of ring main units or power distribution cabinets in which the circuit breakers are respectively arranged; selecting a MAIN-DTU (Distribute Terminal Unit) and saving information; establishing the upstream and downstream connecting models of the circuit breakers to obtain the upstream and downstream equipment information of all the circuit breakers; storing the upstream and downstream equipment information in the MAIN-DTU; receiving an over-current protection signal and a voltage loss protection signal by the MAIN-DTU; detecting whether the over-current protection signal is received by the MAIN-DTU; judging the circuit breakers needing to be isolated and isolating the circuit breaker by the MAIN-DTU; and judging the circuit breakers needing to be recovered from failures and recovering the circuit breakers by the MAIN-DTU. The method provide by the invention has the advantages that the problem that the accuracy and the timeliness of a dispatching center for realizing feeder automation are poor is solved and the feeder automation is accurately realized.
Description
Technical field
The present invention relates to feeder automation field, relate in particular to the feeder automation implementation method of a kind of intelligent distribution community.
Background technology
Feeder line (also claiming feeder line, distribution line) is the important component part of distribution system.Feeder automation automatically detects and excises fault section after mainly referring to that feeder line breaks down, and then recovers a kind of technology of non-fault section normal power supply.
In recent years, along with the fast development of the communication technology, there is the feeder automation based on switching station data terminal unit DTU (Distribute Terminal Unit) and network service.Under this pattern, searching, isolate and restoring electricity of fault is gather fault message and be uploaded to control centre by DTU, and minute closing operation Shi You control centre of circuit breaker and on-load switch controls.This pattern has very high automatization level, and switch only needs one-off.But accurately failure judgement point relies on channel quality, if channel quality is poor, holiday signal, will obtain wrong recognition result, simultaneously because system decision-making instruction is sent by control centre, add the time delay of communication port, also lengthen the recovery time of non-fault section.
In intelligence distribution community, in ring main unit and power distribution cabinet, is furnished with circuit breaker, in ring main unit, is furnished with DTU, feeder line adopts looped network design conventionally, open loop operational mode, primary connection mode is physically: after distribution transformer outlet, connect hand in hand all circuit breakers on feeder line, then get back to the outlet of another one distribution transformer.The intelligent instrument of being furnished with in power distribution cabinet and ring main unit can collect guard signal, and each power distribution cabinet on feeder line and the signal of ring main unit are realized and being enjoyed mutually by optical fiber ring network passage.
Summary of the invention
The object of the invention is to overcome accuracy and the ageing not good defect that is realized feeder automation by control centre, the feeder automation implementation method of a kind of intelligent distribution community is provided, the feeder line mode of connection based on current intelligent distribution community and the equipment of existing configuration, by the DTU of community, directly realized isolation and the service restoration of fault, convenient, fast, be easy to realize and need not increase extra cost.
The technical scheme that realizes above-mentioned purpose is:
The feeder automation implementation method of a kind of intelligent distribution community, each ring main unit in described intelligent distribution community is connected by optical fiber with each power distribution cabinet, ring main unit and power distribution cabinet are all furnished with circuit breaker, ring main unit is furnished with DTU, feeder line is connected in series each circuit breaker, and two of feeder line connects distribution transformer, described feeder automation implementation method comprises the following steps:
Step S1, obtains the number N of circuit breaker, and N is positive integer; Obtain the numbering of each circuit breaker; Obtain this N circuit breaker and distinguish affiliated ring main unit or numbering and the physical location of power distribution cabinet;
Step S2, selects a DTU, by this DTU called after MAIN_DTU, and by the number N of circuit breaker, and the numbering of each circuit breaker, and the numbering of each ring main unit or power distribution cabinet and physical location all deposit MAIN_DTU in;
Step S3, N circuit breaker in search step S1, forms the upstream and downstream link model of this N circuit breaker, obtains the upstream and downstream facility information of each circuit breaker;
Step S4, deposits the upstream and downstream facility information of each circuit breaker obtaining in step S3 in MAIN_DTU;
Step S5, MAIN_DTU receives overcurrent protection signal and the o-volt protection signal from each power distribution cabinet or ring main unit;
Step S6, detects MAIN_DTU and whether receives overcurrent protection signal, if so, enters step S7; If not, enter step S9;
Step S7, MAIN_DTU, according to the overcurrent protection signal receiving, judges the circuit breaker that needs isolation, and sends isolated instructions to the circuit breaker that needs isolation, makes this circuit breaker separate action;
Step S8, MAIN_DTU, according to the o-volt protection signal receiving, judges the circuit breaker that needs fault recovery, and sends the signal that restores electricity to the circuit breaker that needs fault recovery, makes this circuit breaker carry out closed action;
Step S9, finishes.
The feeder automation implementation method of above-mentioned intelligent distribution community, wherein, described step S3 specifically comprises:
According to electrical connection, from the circuit breaker of distribution transformer outlet, sequential search goes out N circuit breaker, and the upstream and downstream that form this N circuit breaker connect; The upstream and downstream facility information of each circuit breaker refers to: the numbering of the numbering of this circuit breaker, its upstream equipment circuit breaker with and the numbering of upstream device circuit breaker.
The feeder automation implementation method of above-mentioned intelligent distribution community, wherein, in step S7, judgement needs the circuit breaker of isolation, specifically comprises:
If circuit breaker has overcurrent protection signal, its upstream equipment is also circuit breaker and has overcurrent protection signal, and these two circuit breakers are without isolation;
If circuit breaker has overcurrent protection signal, its upstream equipment is also circuit breaker and without overcurrent protection signal, and these two circuit breakers need isolation;
If circuit breaker is without overcurrent protection signal, its upstream equipment is also circuit breaker and without overcurrent protection signal, these two circuit breakers are without isolation;
If circuit breaker is without overcurrent protection signal, its upstream equipment is also circuit breaker and has overcurrent protection signal, and these two circuit breakers need isolation.
The feeder automation implementation method of above-mentioned intelligent distribution community, wherein, in step S8, judgement needs the circuit breaker of fault recovery, specifically comprises:
If circuit breaker is not the circuit breaker that requires isolation in step S7, and before 1 minute without o-volt protection signal, current have a decompression guard signal, meanwhile, its upstream equipment or upstream device are distribution transformers, this circuit breaker needs fault recovery;
If circuit breaker is not to need isolation circuit breakers in step S7; and before 1 minute without o-volt protection signal; current have a decompression guard signal; simultaneously; its upstream equipment and upstream device are all circuit breakers; and this upstream equipment and upstream device are current all without o-volt protection signal, and this circuit breaker needs fault recovery.
The feeder automation implementation method of above-mentioned intelligent distribution community, wherein, each described circuit breaker all possesses Remote deciliter function.
The feeder automation implementation method of above-mentioned intelligent distribution community, wherein, described overcurrent protection signal and o-volt protection signal include: the numbering of ring main unit or power distribution cabinet.
The invention has the beneficial effects as follows: the feeder line mode of connection that the present invention is based on current intelligent distribution community, by annular optical-fibre channel, the relative breaker of community is adopted to upstream and downstream DeviceMode modeling, in conjunction with the DTU of community, directly realize isolation and the service restoration of fault, without fault-signal is sent to control centre, thereby solve accuracy and the ageing not good problem that control centre realizes feeder automation.Meanwhile, the present invention does not need to configure extra equipment, all adopts the equipment of existing configuration to realize, and does not need to increase extra cost, facilitates and is easy to and realize.
Accompanying drawing explanation
Fig. 1 is the flow chart of the feeder automation implementation method of intelligent distribution of the present invention community.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The feeder line mode of connection based on current intelligent distribution community; the present invention is by annular optical-fibre channel; to the relative breaker in community; adopt the modeling of upstream and downstream DeviceMode; then the guard signal of ring main unit or power distribution cabinet is sent on the DTU of community ring main unit; by DTU, analyzed after guard signal, send fault isolation commands or fault recovery instruction, directly realize isolation and the service restoration of fault.Particularly, refer to Fig. 1, the feeder automation implementation method of intelligent distribution of the present invention community, comprises the following steps:
Step S1, adds up the number N (N is positive integer) that participates in each circuit breaker of feeder automation in intelligent distribution community, this N circuit breaker circuit breaker numbering separately, and the ring main unit under this N circuit breaker difference or numbering and the physical location of power distribution cabinet; Wherein, each described circuit breaker all possesses Remote deciliter function, and the circuit breaker that does not meet this condition does not participate in feeder automation; A circuit breaker is numbered the numbering corresponding to the ring main unit under this circuit breaker or power distribution cabinet;
Step S2, in intelligent distribution community, select any one DTU(DTU to be configured in ring main unit), by this DTU called after MAIN_DTU, and the information that step S1 is obtained (numbering and the physical location of the number N of circuit breaker, the numbering of circuit breaker, ring main unit or power distribution cabinet) is saved in the solid-state memory of this MAIN_DTU;
Step S3, searches for N circuit breaker, forms the upstream and downstream link model of this N circuit breaker, obtains the upstream and downstream facility information of each circuit breaker, specifically comprise: from the circuit breaker of the outlet of distribution transformer, according to electrical connection, sequential search goes out N circuit breaker, find successively the 1st, the 2nd, the 3rd circuit breaker, until find all N circuit breaker, form the upper of this N circuit breaker, downstream connects, that is: the upstream equipment of the 1st circuit breaker is distribution transformer, upstream device is the 2nd circuit breaker, the upstream equipment of the 2nd circuit breaker is the 1st circuit breaker, upstream device is the 3rd circuit breaker, the like, the upstream equipment of N last circuit breaker is N-1 circuit breaker, upstream device is distribution transformer, according to the above-mentioned circuit breaker from 1 to N, put in order (with this, sequentially narrating below), each circuit breaker numbering of this N circuit breaker is arranged, for each circuit breaker, the upstream and downstream facility information of this circuit breaker refers to: the numbering of the numbering of this circuit breaker, its upstream equipment (circuit breaker) and the numbering of upstream device (circuit breaker), if upstream equipment or upstream device are distribution transformers, do not remember numbering,
Step S4, is saved in the upstream and downstream facility information of each circuit breaker obtaining in step S3 in the solid-state memory of described MAIN_DTU;
Step S5, MAIN_DTU receives the guard signal from each power distribution cabinet or ring main unit, and guard signal comprises overcurrent protection signal and o-volt protection signal; Overcurrent protection signal and o-volt protection signal all contain: the number information of ring main unit or power distribution cabinet; From step S1, MAIN_DTU, by the number information of ring main unit or power distribution cabinet, can learn the physical location of this ring main unit or power distribution cabinet, and the numbering that belongs to the circuit breaker of this ring main unit or power distribution cabinet;
Step S6, detects MAIN_DTU and whether receives overcurrent protection signal, if so, enters step S7; If not, enter step S9;
Step S7, MAIN_DTU carries out Fault Isolation, specifically comprises:
According to the number information of the ring main unit comprising in overcurrent protection signal or power distribution cabinet, learn the numbering of the circuit breaker corresponding with ring main unit or power distribution cabinet, then judgement:
If the i(2≤i≤N, and for integer) individual circuit breaker has overcurrent protection signal (ring main unit or the power distribution cabinet under this circuit breaker has overcurrent protection signal), i-1 circuit breaker of its upstream equipment has overcurrent protection signal, fault occurs in outside the interval of i, i-1 circuit breaker connection, and i and i-1 circuit breaker are without isolation;
If i circuit breaker has overcurrent protection signal, i-1 circuit breaker of its upstream equipment is without overcurrent protection signal, and fault occurs between the interval of i, i-1 circuit breaker connection, and i and i-1 circuit breaker need isolation;
If i circuit breaker is without overcurrent protection signal, i-1 circuit breaker of its upstream equipment is without overcurrent protection signal, and fault occurs in outside the interval of i, i-1 circuit breaker connection, and i and i-1 circuit breaker are without isolation;
If i circuit breaker is without overcurrent protection signal, i-1 circuit breaker of its upstream equipment has overcurrent protection signal, and fault occurs between the interval of i, i-1 circuit breaker connection, and i and i-1 circuit breaker need isolation;
Through after above-mentioned judgement, if there is circuit breaker to need isolation, isolated instructions is sent to corresponding circuit breaker by optical-fibre channel, separate action;
Step S8, MAIN_DTU carries out fault recovery, judges:
The if the 1st or N circuit breaker, the circuit breaker that requires isolation in step S7, and before 1 minute without o-volt protection signal, current have a decompression guard signal, its upstream equipment or upstream device are distribution transformers, the 1st or N circuit breaker carry out fault recovery;
If the n(2≤n≤N-1, and be integer) individual circuit breaker, not to need isolation circuit breakers in step S7, and before 1 minute without o-volt protection signal, current have a decompression guard signal, meanwhile, n-1 circuit breaker of its upstream equipment and n+1 circuit breaker of upstream device are current all without o-volt protection signal, and this n circuit breaker carries out fault recovery;
Through after above-mentioned judgement, if there is circuit breaker will carry out fault recovery, MAIN_DTU sends the signal that restores electricity, and sends to corresponding circuit breaker by optical-fibre channel, carries out closed action;
Step S9, finishes troubleshooting.
To sum up, the present invention can solve accuracy and the ageing not good problem that realizes feeder automation in control centre, take full advantage of the optical-fibre channel of intelligent distribution community, reduced the data channel requirement at distribution scheduling center, the complexity that reduces distribution net work structure design, can meet practical implementation demand.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (5)
1. the feeder automation implementation method of an intelligent distribution community, each ring main unit in described intelligent distribution community is connected by optical fiber with each power distribution cabinet, ring main unit and power distribution cabinet are all furnished with circuit breaker, ring main unit is furnished with DTU, feeder line is connected in series each circuit breaker, and two of feeder line connects distribution transformer, it is characterized in that, described feeder automation implementation method comprises the following steps:
Step S1, obtains the number N of circuit breaker, and N is positive integer; Obtain the numbering of each circuit breaker; Obtain this N circuit breaker and distinguish affiliated ring main unit or numbering and the physical location of power distribution cabinet;
Step S2, selects a DTU, by this DTU called after MAIN_DTU, and by the number N of circuit breaker, and the numbering of each circuit breaker, and the numbering of each ring main unit or power distribution cabinet and physical location all deposit MAIN_DTU in;
Step S3, N circuit breaker in search step S1, forms the upstream and downstream link model of this N circuit breaker, obtains the upstream and downstream facility information of each circuit breaker;
Step S4, deposits the upstream and downstream facility information of each circuit breaker obtaining in step S3 in MAIN_DTU;
Step S5, MAIN_DTU receives overcurrent protection signal and the o-volt protection signal from each power distribution cabinet or ring main unit;
Step S6, detects MAIN_DTU and whether receives overcurrent protection signal, if so, enters step S7; If not, enter step S9;
Step S7, MAIN_DTU, according to the overcurrent protection signal receiving, judges the circuit breaker that needs isolation, and sends isolated instructions to the circuit breaker that needs isolation, makes this circuit breaker separate action;
Step S8, MAIN_DTU, according to the o-volt protection signal receiving, judges the circuit breaker that needs fault recovery, and sends the signal that restores electricity to the circuit breaker that needs fault recovery, makes this circuit breaker carry out closed action;
MAIN_DTU carries out fault recovery, judges:
The if the 1st or N circuit breaker, the circuit breaker that requires isolation in step S7, and before 1 minute without o-volt protection signal, current have a decompression guard signal, its upstream equipment or upstream device are distribution transformers, the 1st or N circuit breaker carry out fault recovery;
If n circuit breaker, 2≤n≤N-1 and be integer, not to need isolation circuit breakers in step S7, and before 1 minute without o-volt protection signal, current have a decompression guard signal, meanwhile, n-1 circuit breaker of its upstream equipment and n+1 circuit breaker of upstream device are current all without o-volt protection signal, and this n circuit breaker carries out fault recovery;
Step S9, finishes.
2. the feeder automation implementation method of intelligent distribution according to claim 1 community, is characterized in that, described step S3 specifically comprises:
According to electrical connection, from the circuit breaker of distribution transformer outlet, sequential search goes out N circuit breaker, and the upstream and downstream that form this N circuit breaker connect; The upstream and downstream facility information of each circuit breaker refers to: the numbering of the numbering of this circuit breaker, its upstream equipment circuit breaker with and the numbering of upstream device circuit breaker.
3. the feeder automation implementation method of intelligent distribution according to claim 1 community, is characterized in that, in step S7, judgement needs the circuit breaker of isolation, specifically comprises:
If circuit breaker has overcurrent protection signal, its upstream equipment is also circuit breaker and has overcurrent protection signal, and these two circuit breakers are without isolation;
If circuit breaker has overcurrent protection signal, its upstream equipment is also circuit breaker and without overcurrent protection signal, and these two circuit breakers need isolation;
If circuit breaker is without overcurrent protection signal, its upstream equipment is also circuit breaker and without overcurrent protection signal, these two circuit breakers are without isolation;
If circuit breaker is without overcurrent protection signal, its upstream equipment is also circuit breaker and has overcurrent protection signal, and these two circuit breakers need isolation.
4. according to the feeder automation implementation method of the intelligent distribution community described in claims 1 to 3 any one, it is characterized in that, each described circuit breaker all possesses Remote deciliter function.
5. according to the feeder automation implementation method of the intelligent distribution community described in claims 1 to 3 any one, it is characterized in that, described overcurrent protection signal and o-volt protection signal include: the numbering of ring main unit or power distribution cabinet.
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| CN201210537448.8A CN103051059B (en) | 2012-12-13 | 2012-12-13 | Feeder automation realizing method for residential area with smart distribution network |
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| CN103354390B (en) * | 2013-06-19 | 2015-12-02 | 国家电网公司 | Distributed intelligence feeder automation control method |
| CN103475508A (en) * | 2013-08-29 | 2013-12-25 | 东方电气集团东方汽轮机有限公司 | Method for detecting fault points of wind field single-loop communication network |
| CN106684839B (en) * | 2016-12-31 | 2019-03-15 | 国网冀北电力有限公司技能培训中心 | A kind of demarcation switch protection system combined based on PLC and fault detector |
| CN113113971B (en) * | 2021-04-15 | 2022-12-09 | 广东电网有限责任公司佛山供电局 | Automatic remote control execution method and related device for distribution network feeder operation task |
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| US9088160B2 (en) * | 2007-12-12 | 2015-07-21 | Abb Research Ltd. | Load restoration for feeder automation in electric power distribution systems |
| US20110115308A1 (en) * | 2008-07-21 | 2011-05-19 | Zhao Wang | Feeder automation system and method for operating the same |
| CN101997340B (en) * | 2010-08-17 | 2012-11-14 | 广东电网公司电力科学研究院 | Intelligent feeder line automation method in autonomous self-healing distribution network |
| CN102684311A (en) * | 2012-06-15 | 2012-09-19 | 河南省电力公司郑州供电公司 | 10 kilovolt (KV) cascade switching station graded protection device and protection method thereof |
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