CN102709889B - Self-healing method and self-healing system for faults of power distribution network - Google Patents

Self-healing method and self-healing system for faults of power distribution network Download PDF

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Publication number
CN102709889B
CN102709889B CN201210169168.6A CN201210169168A CN102709889B CN 102709889 B CN102709889 B CN 102709889B CN 201210169168 A CN201210169168 A CN 201210169168A CN 102709889 B CN102709889 B CN 102709889B
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switch
fault
terminal equipment
block switch
short
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CN102709889A (en
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许永军
叶志峰
李蔚凡
林超
李俊晨
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CYG Sunri Co Ltd
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CYG Sunri Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/20Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/40Display of information, e.g. of data or controls

Abstract

The invention provides a self-healing method and a self-healing system for faults of a power distribution network, relates to a power electric system, and particularly relates to a fault processing system and a fault processing method of a power grid. The method comprises the followings steps: A. a terminal device is installed at each switch node on the power distribution network, and information interaction is performed between the terminal devices an Ethernet; B. when the power distribution network is in fault, the fault information detected by the terminal is transmitted to an adjacent terminal by each terminal; and C. whether the tripping operation or switch-on operation is carried out or not is judged by the terminals according to the received information or the fault information detected by the terminals, wherein the fault positioning and the fault isolation are realized by the terminal device which is installed at a sectional switch; and the fault recovery is realized by switch-on operation of the terminal device installed at an interconnection switch. With the adoption of the self-healing method and the self-healing system, the power supply reliability of the power distribution network is improved effectively; the automatic fault identification, automatic fault isolation and automatic power supply recovery at a non-fault area of the power distribution network can be realized; and the security operation of a power system is ensured.

Description

Power distribution networks fault self-recovery method
Technical field
The present invention relates to electric power electric system, particularly the fault handling method of electrical network.
Background technology
Along with rapid development of economy, society is increasing to the demand of electric power, and power consumer is also more and more higher to the requirement of the aspects such as the power supply reliability of power distribution network, the quality of power supply, operating efficiency and good service.Utilize modern electronic technology, the communication technology, computer and network technology, the work management of the monitoring by power distribution network under normal and accident conditions, protection, control, metering and power supply department organically merges and improves power supply quality is the development trend of intelligent grid.
Fault self-recovery system can automatically detect identification electric network fault, automatism isolation electric network fault and automatically recover the mains supply of non-faulty section, can greatly improve the power supply quality of distribution network, and it occupies critical role in electrical power distribution automatization system.But existing fault self-recovery system or too rely on communication network, or it is longer to realize fault self-recovery and the failure recovery time of simple net shelf structure, does not also have to be adapted to the Distribution Network Failure self-healing system in various Complicated Distribution Network framework situations at present.
Summary of the invention
The present invention is directed to the deficiency that existing application exists, provide that a kind of modeling realizes the method and system of the handling failure that intelligent grid distribution automatically controls based on IEC61850 standard, be applicable to traditional distribution network and be also applicable to intelligent grid distribution network simultaneously, the isolated fault of energy quickly, efficiently and accurately of the present invention and recovery fault.
One of object of the present invention is a kind of power distribution networks fault self-recovery method that energy fast and reliable identification the whole network abort situation is provided and carries out Fault Isolation, recovery operation.
Two of object of the present invention is the power distribution networks fault self-recovery system that a kind of energy fast and reliable identification the whole network abort situation is provided and carries out Fault Isolation, recovery operation.
One of object of the present invention can realize like this, designs a kind of power distribution networks fault self-recovery method, comprises the following steps:
A, on distribution network, segmentation place arranges block switch, between some block switches, interconnection switch is set, and each switch is corresponding installs a terminal equipment, and the information exchange between terminal equipment is by IEC61850 protocol transmission;
When B, distribution network break down, each terminal equipment sends the fault message that itself detects to adjacent terminal equipment by GOOSE;
The information that C, terminal equipment are received according to it and the fault message itself detecting judge whether to trip or closing operation, wherein fault location and Fault Isolation are realized by block switch terminal equipment, and fault recovery is carried out closing operation by interconnection switch terminal equipment and realized;
The action logic of Fault Isolation is: when block switch terminal equipment detects short trouble, receive that mains side block switch has fault-signal simultaneously, receive that load side block switch, without short trouble signal, jumps this block switch; Or this segmentation switch terminal equipment does not detect short trouble, receive that mains side block switch has fault-signal, jumps this block switch;
The action logic of fault recovery is: when interconnection switch terminal equipment detects a side, have and press that a side is with no pressure, this interconnection switch terminal equipment does not detect short trouble, do not receive locking fault recovery signal that other terminal equipment sends, receive the fault recovery enabling signal that other-end equipment sends, close this interconnection switch.
Two of object of the present invention can realize like this, designs a kind of power distribution networks fault self-recovery system, comprises block switch, block switch terminal equipment, interconnection switch, interconnection switch terminal equipment and Ethernet,
Block switch, is arranged on segmentation place on electric power networks, the corresponding terminal equipment of installing of each block switch;
Interconnection switch arranges between some block switches, the corresponding terminal equipment of installing of each interconnection switch;
Ethernet, for the transmission of the information data between terminal equipment;
Terminal equipment information exchange adopts the GOOSE communication mechanism of IEC61850 standard communication protocol, terminal equipment GOOSE opens into empty terminal and is mains side short-circuit signal, load side short-circuit signal 01, load side short-circuit signal 02, load side short-circuit signal 03, starts fault recovery signal and locking fault recovery signal, and terminal equipment GOOSE outputs empty terminal for this terminal equipment failure signal, startup fault recovery signal and locking fault recovery signal.
The present invention can effectively improve the power supply reliability of distribution network, and the automatic power of realizing fault identification automatically, automatic fault isolation and the non-faulty section of distrbution network recovers, and guarantees safe operation of power system.
Accompanying drawing explanation
Fig. 1 is the network architecture schematic diagram of one of preferred embodiment of the present invention;
Fig. 2 is two network architecture schematic diagram of preferred embodiment of the present invention.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
A power distribution networks fault self-recovery method, comprises the following steps:
A, on distribution network subsection setup block switch, between some block switches, interconnection switch is set, each switch correspondence arranges a terminal equipment, the information exchange between terminal equipment is transmitted by Ethernet;
When B, distribution network break down, the fault message that each terminal equipment transmission detects itself is to adjacent terminal equipment;
The information that C, terminal equipment are received according to it and the fault message itself detecting judge whether to trip or closing operation, and wherein fault location and Fault Isolation are realized by block switch, and fault recovery is closed a floodgate to realize by interconnection switch;
The action logic of fault self-recovery is mainly rapid in two steps, i.e. Fault Isolation and fault recovery.
The action logic of Fault Isolation is: when block switch terminal equipment detects short trouble, receive that mains side block switch has fault-signal, receive that load side block switch, without short trouble signal, jumps this block switch; Or this segmentation switch terminal equipment does not detect short trouble, receive that mains side block switch has fault-signal, jumps this block switch;
The action logic of fault recovery is: when interconnection switch detect a side have press a side with no pressure, receive that other device sends without locking fault recovery signal, receive sides adjacent fault-free signal and enabling signal, close this interconnection switch.
This fault self-recovery system adopts the communication of IEC61850 communication protocol, and terminal equipment information exchange adopts GOOSE communication to realize, and its fault self-recovery is separately processed according to block switch and interconnection switch, can realize at a terrific speed location, isolation and the recovery of fault.When distribution network breaks down, each terminal equipment can send the fault message that itself detects to adjacent terminal equipment in GOOSE mode, the information that terminal equipment is received according to it and the fault message itself detecting comprehensively judge, whether conclusive judgement trips and closing operation.
Block switch action logic:
Fault location and Fault Isolation are realized by block switch, and it discharges and recharges with operation condition as follows:
Charge condition: when GOOSE communication has pressure without abnormal, remote operation pattern, this block switch in co-bit, both sides, involution and duration reach the charging time limit and charged for this segmentation switch fault-free and fault-signal.
While having following arbitrary condition, discharge: GOOSE communication abnormality, local operation pattern, this block switch are in minute position and an electric voltage exception.
Operation condition 1: charged, this block switch detects short trouble, mains side block switch has fault or mains side without block switch, and load side block switch without block switch, is jumped this block switch by definite value without short trouble or load side.If operation condition disappears between time delay, return to charged state.
Operation condition 2: charged, this block switch does not detect short trouble, mains side block switch has fault, by definite value, jumps this block switch.If operation condition disappears between time delay, return to charged state.
Tripping operation carry out after judgement: after tripping operation, continue judge whether displacement of block switch, if displacement is successful within a certain period of time, generates fault separating brake event, and interconnection switch is sent out to interconnection switch combined floodgate enabling signal.If also not displacement of block switch within a certain period of time, generates Fault Isolation turkey, and interconnection switch is sent out to interconnection switch closing locking signal.
Interconnection switch action logic:
Fault recovery is closed a floodgate to realize by interconnection switch, and it discharges and recharges with operation condition as follows:
Charge condition: when GOOSE transmitting-receiving is normal, remote operation pattern, this interconnection switch all have in a minute position, both sides and press and the duration reaches and fills the time limit and charged.
While having following arbitrary condition, discharge: GOOSE communication abnormality, local operation pattern, mains side or load side have fault, this interconnection switch in co-bit and electric voltage exception.
Operation condition: interconnection switch detects a side the interconnection switch combined floodgate enabling signal that pressure one side is with no pressure, receive sides adjacent fault-free signal and receive other terminal equipment transmission, and trigger closes a floodgate, and does not satisfy condition and return to charged state in time delay.When having many interconnection switches, by time delay definite value, distinguish successively, after an interconnection switch closes a floodgate successfully, other related interconnection switch will automatic discharging termination logic.
Judgement after close a floodgate carrying out: continue to judge whether displacement of interconnection switch after closing a floodgate, if displacement success within a certain period of time, generates fault recovery success event, if also not displacement of interconnection switch within a certain period of time, generates fault recovery turkey, and regain the outlet of closing a floodgate.
The relevant GOOSE of terminal equipment opens into empty terminal and is: mains side short-circuit signal, load side short-circuit signal 01, load side short-circuit signal 02, load side short-circuit signal 03, startup fault recovery signal and locking fault recovery signal (useful while being operated in interconnection switch);
The relevant GOOSE of terminal equipment outputs empty terminal and is: this terminal equipment failure signal, startup fault recovery signal and locking fault recovery signal.
Embodiment mono-, as shown in Figure 1, is the terminal equipment distributed fault self-healing main electrical scheme GOOSE network architecture of handing in hand.
For main electrical scheme GOOSE configuration hand in hand.To the empty terminal arrangement of the GOOSE of block switch 1, mains side short-circuit signal: do not connect load side short-circuit signal 1: connect the short-circuit signal of block switch 2, load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; To the empty terminal arrangement of the GOOSE of block switch 2, mains side short-circuit signal: connect the short-circuit signal of block switch 1, load side short-circuit signal 1: connect the short-circuit signal of block switch 3, load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; To the empty terminal arrangement of the GOOSE of block switch 3, mains side short-circuit signal: connect the short-circuit signal of block switch 2, load side short-circuit signal 1: do not connect load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; To the empty terminal arrangement of the GOOSE of block switch 4, mains side short-circuit signal: connect the short-circuit signal of block switch 5, load side short-circuit signal 1: do not connect load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; To the empty terminal arrangement of the GOOSE of block switch 5, mains side short-circuit signal: do not connect load side short-circuit signal 1: connect the short-circuit signal of block switch 4, load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; To the empty terminal arrangement of the GOOSE of interconnection switch 1, mains side short-circuit signal: the short-circuit signal that connects block switch 2, load side short-circuit signal 1: the short-circuit signal that connects block switch 4, load side short-circuit signal 2: do not connect, load side short-circuit signal 3: do not connect enabling signal: by the startup fault recovery signal of all block switches and locking fault recovery signal leading.
If short circuit between transformer station 1 and block switch 1, the self-healing process of system: belong to the protection range of transformer station, terminal equipment is without realizing self-healing.
If short circuit between block switch 1 and block switch 2, the self-healing process of system.Block switch 1: mains side is without block switch, and load side is without short-circuit signal, and self detects short circuit, meets operation condition 1, and this switch is jumped in time delay; Block switch 2: mains side has short-circuit signal, self does not detect short circuit, meets operation condition 2, and this switch is jumped in time delay; Other block switch: do not meet operation condition; Interconnection switch: after block switch 1 action, meet operation condition, this switch is closed in time delay.
If short circuit between block switch 2 and block switch 3, the self-healing process of system.Block switch 1: mains side is without block switch, and load side has short-circuit signal, and self detects short circuit, does not meet operation condition; Block switch 2: mains side has short-circuit signal, self detects short circuit, and load side, without short-circuit signal, meets operation condition 1, and this switch is jumped in time delay; Block switch 3: mains side has short-circuit signal, self does not detect short circuit, meets operation condition 2, and this switch is jumped in time delay; Other block switch: do not meet operation condition; Interconnection switch: after block switch 1 action, meet operation condition, this switch is closed in time delay.
If short circuit between block switch 3 and interconnection switch, the self-healing process of system.Block switch 1: mains side is without block switch, and load side has short-circuit signal, and self detects short circuit, does not meet operation condition; Block switch 2: mains side has short-circuit signal, self detects short circuit, and load side has short-circuit signal, does not meet operation condition; This switch is jumped in time delay; Block switch 3: mains side has short-circuit signal, self detects short circuit, and load side, without block switch, meets operation condition 1, and this switch is jumped in time delay; Other block switch: do not meet operation condition; Interconnection switch: receive the short-circuit signal of adjacent switch and discharge, cannot close a floodgate.
Other place is short-circuited or interconnection switch both sides are short-circuited simultaneously, and the self-healing process of system is similar.
Embodiment bis-, and as shown in Figure 2, different for many power connections, Fig. 2 connects mode for more complicated T, and other wiring is similar.
GOOSE configuration, the GOOSE void terminal arrangement to block switch 1: mains side short-circuit signal: do not connect load side short-circuit signal 1: connect the short-circuit signal of block switch 2, load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; GOOSE void terminal arrangement to block switch 2: mains side short-circuit signal: the short-circuit signal that connects block switch 1, load side short-circuit signal 1: the short-circuit signal that connects block switch 3, load side short-circuit signal 2: connect the short-circuit signal of block switch 5, load side short-circuit signal 3: the short-circuit signal that connects block switch 7; GOOSE void terminal arrangement to block switch 3: mains side short-circuit signal: connect the short-circuit signal of block switch 2, load side short-circuit signal 1: do not connect load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; GOOSE void terminal arrangement to block switch 4: with the configuration of embodiment mono-; GOOSE void terminal arrangement to block switch 5: mains side short-circuit signal: connect the short-circuit signal of block switch 2, load side short-circuit signal 1: do not connect load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; GOOSE void terminal arrangement to block switch 6: with the configuration of embodiment mono-; GOOSE void terminal arrangement to block switch 7: mains side short-circuit signal: connect the short-circuit signal of block switch 2, load side short-circuit signal 1: do not connect load side short-circuit signal 2: do not connect load side short-circuit signal 3: do not connect; GOOSE void terminal arrangement to block switch 8: with the configuration of embodiment mono-; GOOSE void terminal arrangement to interconnection switch 1: mains side short-circuit signal: the short-circuit signal that connects block switch 3, load side short-circuit signal 1: the short-circuit signal that connects block switch 4, load side short-circuit signal 2: do not connect, load side short-circuit signal 3: do not connect enabling signal and block signal: by the startup fault recovery signal of block switch 1,2,3,4 and locking fault recovery signal leading; GOOSE void terminal arrangement to interconnection switch 2: mains side short-circuit signal: the short-circuit signal that connects block switch 5, load side short-circuit signal 1: the short-circuit signal that connects block switch 6, load side short-circuit signal 2: do not connect, load side short-circuit signal 3: do not connect enabling signal and block signal: by the startup fault recovery signal of block switch 1,2,5,6 and locking fault recovery signal leading; GOOSE void terminal arrangement to interconnection switch 3: mains side short-circuit signal: the short-circuit signal that connects block switch 7, load side short-circuit signal 1: the short-circuit signal that connects block switch 8, load side short-circuit signal 2: do not connect, load side short-circuit signal 3: do not connect enabling signal and block signal: by the startup fault recovery signal of block switch 1,2,7,8 and locking fault recovery signal leading.
If short circuit between transformer station 1 and block switch 1, the self-healing process of system: with embodiment mono-.
If short circuit between block switch 1 and block switch 2, the self-healing process of system: with embodiment mono-.
If short circuit between block switch 2 and block switch 3, the self-healing process of system.Block switch 1: mains side is without block switch, and load side has short-circuit signal, and self detects short circuit, does not meet operation condition; Block switch 2: mains side has short-circuit signal, self detects short circuit, and load side, without short-circuit signal, meets operation condition 1, and this switch is jumped in time delay; Block switch 3: mains side has short-circuit signal, self does not detect short circuit, meets operation condition 2, and this switch is jumped in time delay; Block switch 4: mains side has short-circuit signal, self does not detect short circuit, meets operation condition 2, and this switch is jumped in time delay; Block switch 5: mains side has short-circuit signal, self does not detect short circuit, meets operation condition 2, and this switch is jumped in time delay; Other block switch: do not meet operation condition; Interconnection switch 1: after block switch 2 actions, meet operation condition, this switch is closed in time delay; Interconnection switch 2: after block switch 2 actions, meet operation condition, this switch is closed in time delay; Interconnection switch 3: after block switch 2 actions, meet operation condition, this switch is closed in time delay.
Other place is short-circuited or interconnection switch both sides are short-circuited simultaneously, and the self-healing process of system is similar.
A power distribution networks fault self-recovery system, comprises block switch, interconnection switch, terminal equipment, Ethernet; Block switch, is arranged on electric power networks; Interconnection switch arranges between some block switches; Terminal equipment, each block switch and interconnection switch be corresponding setting respectively; Ethernet, for the transmission of the information data between terminal equipment;
Terminal equipment information exchange adopts GOOSE communication mechanism, terminal equipment GOOSE opens into empty terminal and is mains side short-circuit signal, load side short-circuit signal 01, load side short-circuit signal 02, load side short-circuit signal 03, starts fault recovery signal and locking fault recovery signal, and terminal equipment GOOSE outputs empty terminal for this terminal equipment failure signal, startup fault recovery signal and locking fault recovery signal.
Described terminal equipment adopts the double-core CPU of integrated high primary frequency ARM9+32 position high-speed dsp and inner LVDS data communication bus carry out data sampling and process and send.
The present invention adopts the modeling of IEC61850 standard, and be applicable to the intelligent distribution network with distributed power source, utilize GOOSE communication mode to realize the data interaction between terminal equipment, terminal equipment energy fast and reliable identification the whole network abort situation, and carry out Fault Isolation and failure recovery operation.Thereby improve the reliability of power supply, guarantee power grid security.

Claims (3)

1. a power distribution networks fault self-recovery method, is characterized in that comprising the following steps:
A, on distribution network, segmentation place arranges block switch, between some block switches, interconnection switch is set, and each switch is corresponding installs a terminal equipment, and the information exchange between terminal equipment is by IEC61850 protocol transmission;
When B, distribution network break down, each terminal equipment sends the fault message that itself detects to adjacent terminal equipment by GOOSE;
The information that C, terminal equipment are received according to it and the fault message itself detecting judge whether to trip or closing operation, wherein fault location and Fault Isolation are realized by block switch terminal equipment, and fault recovery is carried out closing operation by interconnection switch terminal equipment and realized;
The action logic of Fault Isolation is: when block switch terminal equipment detects short trouble, receive that mains side block switch has fault-signal simultaneously, receive that load side block switch, without short trouble signal, jumps this block switch; Or this segmentation switch terminal equipment does not detect short trouble, receive that mains side block switch has fault-signal, jumps this block switch;
The action logic of fault recovery is: when interconnection switch terminal equipment detects a side, have and press that a side is with no pressure, this interconnection switch terminal equipment does not detect short trouble, do not receive locking fault recovery signal that other terminal equipment sends, receive the fault recovery enabling signal that other-end equipment sends, close this interconnection switch;
Described block switch terminal equipment charges under condition below: described block switch terminal equipment is normal in GOOSE communication, remote operation pattern, this block switch have pressure in co-bit, both sides, the involution of this segmentation switch fault-free and fault-signal, the duration reaches charging and the time limit has charged;
Described block switch terminal equipment discharges when dividing position and electric voltage exception at GOOSE communication abnormality, local operation pattern, this block switch;
Described interconnection switch terminal equipment charges under condition below: described interconnection switch terminal equipment is normal in GOOSE communication, remote operation pattern, this interconnection switch all have pressure in a minute position, both sides, and the duration reaches the charging time limit and charged;
When having fault, this interconnection switch in co-bit and electric voltage exception, GOOSE communication abnormality, local operation pattern, mains side or load side discharge.
2. power distribution networks fault self-recovery method according to claim 1, is characterized in that, described block switch terminal equipment moves under condition below:
1. charged, the equipment Inspection of this segmentation switch terminal is to short trouble, and mains side block switch has fault or non-transformer side block switch, and load side block switch, without short trouble or zero load side block switch, is jumped this block switch by definite value; If operation condition disappears between time delay, return to charged state;
2. charged, this segmentation switch terminal equipment does not detect short trouble, and mains side block switch has fault, by definite value, jumps this block switch; If operation condition disappears between time delay, return to charged state;
After tripping operation, judge whether displacement of block switch, if displacement success within a certain period of time generates Fault Isolation success event, and interconnection switch is sent out to interconnection switch combined floodgate enabling signal; If also not displacement of block switch within a certain period of time, generates Fault Isolation turkey, and locking interconnection switch terminal fault recovers action.
3. power distribution networks fault self-recovery method according to claim 1, it is characterized in that, described interconnection switch terminal equipment moves under condition below: interconnection switch detect a side have press a side with no pressure, receive sides adjacent fault-free signal and receive interconnection switch combined floodgate enabling signal that other terminal equipment sends and without locking, trigger closes a floodgate, when receiving the directly electric discharge of locking fault recovery signal, in time delay, do not satisfy condition and return to charged state; When having many interconnection switches, by time delay definite value, distinguish successively, after an interconnection switch closes a floodgate successfully, other related interconnection switch will automatic discharging termination logic;
After combined floodgate, continue to sentence whether displacement of interconnection switch, if displacement success within a certain period of time generates fault recovery success event, if also not displacement of interconnection switch within a certain period of time generates fault recovery turkey, and regain the outlet of closing a floodgate.
CN201210169168.6A 2012-05-29 2012-05-29 Self-healing method and self-healing system for faults of power distribution network Active CN102709889B (en)

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