CN108494088B - Intelligent distributed feeder automation terminal considering self-networking equipment state - Google Patents
Intelligent distributed feeder automation terminal considering self-networking equipment state Download PDFInfo
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- 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
- H02H7/261—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 involving signal transmission between at least two stations
- H02H7/262—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 involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
An intelligent distributed feeder automation terminal considering the state of an ad hoc network device is arranged at two ends or more ends of a distribution line; when the distribution line has a fault, each feeder automation terminal acquires current signals of the distribution line, parameter information of self-networking equipment is acquired through a distribution network production management platform to calculate equipment state indexes, fault criteria are formed according to the calculated equipment state indexes and the acquired current signals, and the fault of the distribution line is isolated according to the fault criteria; after fault isolation, each feeder automation terminal obtains the equipment state index and the current signal of the adjacent feeder automation terminal in a peer-to-peer communication mode according to the calculated local equipment state index and the locally acquired current signal to form a fault recovery criterion, and selects optimal equipment to recover power supply for a non-fault area according to the fault recovery criterion. The state indexes of the ad hoc network equipment are comprehensively considered, and the accuracy of the switching action of the equipment is ensured.
Description
Technical Field
The invention relates to the field of intelligent power grids, in particular to an intelligent distributed feeder automation terminal and distribution line fault isolation and recovery system and method considering the state of self-networking equipment.
Background
In the construction and daily operation and maintenance of a power grid, increasingly frequent natural disasters and external interference are resisted, the operation cost is reduced, and energy conservation and emission reduction are promoted to become one of important works of a future power system, so that the flexibility and compatibility of the power grid must be improved, and the security defense capability and the self-healing capability of the power grid are continuously improved by means of intellectualization. Distribution automation is an important ring in smart grid construction, and new connotations are injected in the development climax of the smart grid to meet the climax of new construction. Therefore, the development concept and the implementation mode of distribution automation under the new situation of smart grid construction must be actively explored and practiced, an advanced, practical, open, interactive, stable and reliable distribution automation system is built, rapid isolation of faults and rapid recovery of power supply in non-fault areas are achieved, the production operation management level of a distribution network is improved, and demonstration is provided for comprehensive popularization and application accumulation experience of next-stage distribution automation.
The operation index of the power distribution network is not only related to the grid structure of the primary side, but also closely related to the real-time state of the equipment, and the evaluation of the real-time state of the equipment depends on secondary measurement equipment. The development of the smart power grid promotes the progress of secondary equipment, and the equipment health state assessment is more real-time and accurate compared with the traditional equipment life assessment just by adopting advanced measurement equipment (AMI) and an online monitoring technology. Therefore, the patent carries out corresponding innovation aiming at the current situation.
Disclosure of Invention
The application provides an intelligent distributed feeder automation terminal and distribution line fault isolation and recovery system and method considering the state of ad hoc network equipment.
According to a first aspect, an embodiment provides an intelligent distributed feeder automation terminal considering ad hoc network device status, comprising:
the current acquisition module is used for acquiring a current signal;
the switch information acquisition module is used for acquiring a switch signal;
the peer-to-peer communication module is used for transmitting the current signal acquired by the current acquisition module and the switch signal acquired by the switch information acquisition module to the outside;
the control equipment is used for controlling the current acquisition module to acquire current signals of the distribution line when the distribution line has a fault, acquiring parameter information of the self-networking equipment through the distribution network production management platform to calculate an equipment state index, forming a fault criterion according to the calculated equipment state index and the acquired current signals, and performing fault isolation on the fault of the distribution line according to the fault criterion; and forming a fault recovery criterion together with the acquired current signal according to the calculated equipment state index, and selecting the optimal equipment to recover power supply for the non-fault area according to the fault recovery criterion.
In one embodiment, the parameter information of the ad hoc network device includes: on-line monitoring, state maintenance result, equipment failure rate and load rate, the calculation mode of equipment state index is:
wherein H is the equipment state index, O is online monitoring, K is the state maintenance result, and e is a constant.
In one embodiment, a fault criterion is formed according to a calculated device status index and a collected current signal, and fault isolation is performed on a fault of a distribution line according to the fault criterion, specifically:
judging whether the acquired current signal is an overcurrent signal, if so, performing fault positioning and determining a fault section;
calculating the success rate of the switching action of the equipment according to the equipment state index and the equipment fault rate:
and judging whether the success rate of the switching action is more than or equal to 2, if so, switching action is carried out, fault isolation is carried out, and otherwise, searching for the switch of the adjacent equipment in a peer-to-peer communication mode and calculating the success rate of the switching action of the adjacent equipment.
In one embodiment, a fault recovery criterion is formed according to a calculated device state index and a collected current signal, and an optimal device is selected according to the fault recovery criterion to recover power supply to a non-fault area, specifically:
and judging whether the acquired current signal is larger than the upper limit of the current-carrying capacity, if so, judging whether the switching action success rate of the equipment is larger than or equal to 2, and if so, taking the equipment as an optimal equipment switch to make the equipment switch act to recover power supply for a non-fault area.
According to a second aspect, an embodiment provides a distribution line fault isolation and recovery system, including any one of the foregoing intelligent distributed feeder automation terminals, where the intelligent distributed feeder automation terminals are disposed at two or more ends of a distribution line, and information is transmitted between adjacent intelligent distributed feeder automation terminals in a peer-to-peer communication manner;
when the distribution line has a fault, each intelligent distributed feeder automation terminal acquires current signals of the distribution line, parameter information of self-networking equipment is acquired through a distribution network production management platform to calculate equipment state indexes, fault criteria are formed according to the calculated equipment state indexes and the acquired current signals, and the fault of the distribution line is isolated according to the fault criteria;
after fault isolation, each intelligent distributed feeder automation terminal obtains the equipment state index and the current signal of the adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode according to the calculated local equipment state index and the locally acquired current signal to form a fault recovery criterion, and selects optimal equipment to recover power supply for a non-fault area according to the fault recovery criterion.
According to a third aspect, in one embodiment, there is provided a distribution line fault isolation and recovery method, including the steps of:
the intelligent distributed feeder automation terminals are arranged at two ends or multiple ends of the distribution line to collect current signals and switching signals of the distribution line, and information is transmitted between adjacent intelligent distributed feeder automation terminals in a peer-to-peer communication mode;
the distribution network production information interface module is arranged at two ends or multiple ends of the distribution line to acquire parameter information of the ad hoc network equipment, and the parameter information comprises: online monitoring, state maintenance results, equipment failure rate and load rate;
when a distribution line has a fault, each intelligent distributed feeder automation terminal acquires a distribution current signal, acquires parameter information of self-networking equipment through a distribution network production information interface module to calculate an equipment state index, forms a fault criterion according to the calculated equipment state index and the acquired current signal, and performs fault isolation on the fault of the distribution line according to the fault criterion;
after fault isolation, transmitting the current signal and the equipment state index to an adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode;
after fault isolation, each intelligent distributed feeder automation terminal obtains the equipment state index and the current signal of the adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode according to the calculated local equipment state index and the locally acquired current signal to form a fault recovery criterion, and selects optimal equipment to recover power supply for a non-fault area according to the fault recovery criterion.
In one embodiment, the calculation method of the device status index is as follows:
wherein H is the equipment state index, O is online monitoring, K is the state maintenance result, and e is a constant.
In one embodiment, a fault criterion is formed according to a calculated device status index and a collected current signal, and fault isolation is performed on a fault of a distribution line according to the fault criterion, specifically:
judging whether current signals at two ends of adjacent intelligent distributed feeder automation terminals are over-current simultaneously; if so, fault positioning is carried out;
after the fault section is determined, calculating the success rate of the switching action of the equipment by combining the equipment state index and the equipment fault rate:
and judging whether the success rate of the equipment switch action is more than or equal to 2, if so, actuating the equipment switch to carry out fault isolation, and otherwise, searching for the adjacent equipment switch in a peer-to-peer communication mode and calculating the success rate of the adjacent equipment switch action.
In one embodiment, each intelligent distributed feeder automation terminal calculates a local device state index and a locally acquired current signal, and acquires a device state index and a current signal of an adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication manner to form a fault recovery criterion, and selects an optimal device to recover power supply to a non-fault area according to the fault recovery criterion, specifically:
and judging whether the current signal of the local and the current signal of the adjacent intelligent distributed feeder automation terminal are greater than the upper limit of the current-carrying capacity, if so, judging whether the action success rate of the local and adjacent equipment switches is greater than or equal to 2, and if so, taking the local and adjacent equipment switches as the optimal equipment switches to act to recover power supply to the non-fault area.
According to the intelligent distributed feeder automation terminal of the embodiment, in the process of fault isolation and fault recovery control of the distribution line, the state indexes of the ad hoc network equipment are comprehensively considered, the problem that whether the switch can act can not be scientifically and accurately judged is solved, and the accuracy of the action of the equipment switch when fault isolation and fault recovery are required is ensured.
Drawings
FIG. 1 is a schematic block diagram of a distribution line fault isolation and recovery system;
fig. 2 is a flow chart of a method for fault isolation and restoration of a distribution line.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
In the embodiment of the invention, the equipment state is comprehensively considered in the process of carrying out fault isolation and non-fault area power supply recovery on the distribution line by feeder automation, so that the accuracy of the equipment switching action when the fault isolation and the non-fault area power supply recovery are required to be carried out is ensured.
The first embodiment is as follows:
the present example provides an intelligent distributed feeder automation terminal considering an ad hoc network device state, where the intelligent distributed feeder automation terminal is distributed, and specifically includes: the device comprises a current acquisition module, a switch information acquisition module, a peer-to-peer communication module and control equipment. The switch information acquisition module is used for acquiring a switch signal of switch equipment in the distribution line; the peer-to-peer communication module is used for transmitting the current signal acquired by the current acquisition module and the switch signal acquired by the switch information acquisition module to the outside; when the distribution line has a fault, the control equipment is used for controlling the current acquisition module to acquire a current signal of the distribution line, acquiring parameter information of the self-networking equipment through the distribution network production management platform to calculate an equipment state index, forming a fault criterion according to the calculated equipment state index and the acquired current signal, and performing fault isolation on the fault of the distribution line according to the fault criterion; and forming a fault recovery criterion together with the acquired current signal according to the calculated equipment state index, and selecting the optimal equipment to recover power supply for the non-fault area according to the fault recovery criterion.
The parameter information of the ad hoc network equipment comprises online monitoring, state maintenance results, equipment failure rate and load rate, and the calculation mode of the equipment state index is as follows:
wherein H is the equipment state index, O is online monitoring, K is the state maintenance result, and e is a constant.
In the existing fault isolation, the intelligent distributed feeder automation terminal controls the equipment switch action based on the current of the distribution line, but there is a phenomenon of equipment switch misoperation, and in order to solve the problem, in this example, besides considering the current signal, the state of the ad hoc network equipment is also considered comprehensively to realize the accuracy of the equipment switch action corresponding to the fault point in the distribution line, which specifically is as follows:
1) judging whether the acquired current signal is an overcurrent signal, if so, performing fault positioning and determining a fault section, and if not, not performing the following operations;
2) calculating the success rate of the switching action of the equipment according to the equipment state index and the equipment fault rate:
3) judging whether the success rate of the switching action is more than or equal to 2, if so, switching action is carried out, fault isolation is carried out, otherwise, the switch does not act, the switch of the adjacent equipment is searched in a peer-to-peer communication mode, and the success rate of the switching action of the adjacent equipment is calculated through the 2) till the equipment switch with the success rate of the switching action more than or equal to 2 is searched, and the action is controlled, so that the fault isolation is realized.
Similarly, in the existing fault recovery, the intelligent distributed feeder automation terminal controls the switching action of the device based on the current, but does not provide the power supply service by using the optimal device, and in order to solve the problem, in this example, the current signal is considered, and the device state is also considered comprehensively, so as to search the optimal device to recover the fault point when the corresponding fault point in the distribution line recovers, specifically:
and judging whether the acquired current signal is larger than the upper limit of the current-carrying capacity, if so, judging whether the switching action success rate of the equipment is larger than or equal to 2, and if so, taking the equipment as an optimal equipment switch to make the equipment switch act to recover power supply for a non-fault area. Otherwise, the equipment switch does not act, and the next adjacent equipment switch is searched until the equipment switch with the switch action success rate more than or equal to 2 is found. In other embodiments, if a plurality of device switches greater than or equal to 2 are found in the non-failure area, the device switch with the highest success rate of switching operation is determined as the optimal device switch in the non-failure area.
The intelligent distributed feeder automation terminal provided by the embodiment combines a current signal and an equipment state, and can accurately control the equipment switching action in the recovery power supply with fault isolation and non-fault distinction.
Example two:
based on the first embodiment, the present example provides a distribution line fault isolation and recovery system, as shown in fig. 1, which includes the intelligent distributed feeder automation terminals in the first embodiment, wherein the intelligent distributed feeder automation terminals are disposed at two or more ends of a distribution line, and information is transmitted between adjacent intelligent distributed feeder automation terminals in a peer-to-peer communication manner.
When the distribution line breaks down, each intelligent distributed feeder automation terminal acquires current signals of the distribution line, parameter information of self-networking equipment is obtained through a distribution network production management platform to calculate equipment state indexes, fault criteria are formed according to the calculated equipment state indexes and the acquired current signals, and fault isolation is carried out on the faults of the distribution line according to the fault criteria. For a method for calculating a device status indicator and a specific method for fault isolation, please refer to a specific working method of the intelligent distributed feeder automation terminal in the first embodiment, which is not described in detail in this embodiment.
After fault isolation, each intelligent distributed feeder automation terminal obtains the equipment state index and the current signal of the adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode according to the calculated local equipment state index and the locally acquired current signal to form a fault recovery criterion, and selects optimal equipment to recover power supply for a non-fault area according to the fault recovery criterion. For a specific reference to the first embodiment, details of the selection method of the optimal device and the power restoration for the non-failure area are not described in this embodiment.
Example three:
based on the first embodiment and the second embodiment, the present example provides a distribution line fault isolation and recovery method, and a flowchart thereof is shown in fig. 2, and specifically includes the following steps.
S1: the intelligent distributed feeder automation terminals are arranged at two ends or multiple ends of the distribution line, so that current signals and switch signals of the distribution line are collected, and information is transmitted between adjacent intelligent distributed feeder automation terminals in a peer-to-peer communication mode.
S2: the distribution network production information interface module is arranged at two ends or multiple ends of the distribution line to acquire parameter information of the ad hoc network equipment, and the parameter information comprises: on-line monitoring, state maintenance results, equipment failure rate and load rate.
S3: when the distribution line has faults, each intelligent distributed feeder automation terminal acquires current signals of the distribution line, parameter information of self-networking equipment is acquired through a distribution network production information interface module to calculate equipment state indexes, fault criteria are formed according to the calculated equipment state indexes and the acquired current signals, and fault isolation is carried out on the faults of the distribution line according to the fault criteria.
The calculation mode of the equipment state index is as follows:
wherein H is the equipment state index, O is on-line monitoring, and K is the stateAnd e is a constant as a result of the state overhaul.
Forming a fault criterion according to the calculated equipment state index and the acquired current signal, and performing fault isolation on the fault of the distribution line according to the fault criterion, specifically:
judging whether current signals at two ends of adjacent intelligent distributed feeder automation terminals are over-current simultaneously; if so, fault positioning is carried out;
after the fault section is determined, calculating the success rate of the switching action of the equipment by combining the equipment state index and the equipment fault rate:
wherein S is the success rate of switching action, and F is the failure rate of equipment;
and judging whether the success rate of the device switch action is more than or equal to 2, if so, actuating the device switch to carry out fault isolation, otherwise, not actuating the switch, searching switches of adjacent devices in a peer-to-peer communication mode, and calculating the success rate of the device switch action of the adjacent devices through the step S3 until the device switch with the success rate of the device switch action more than or equal to 2 is searched out, and controlling the action of the device switch to realize fault isolation.
S4: and after fault isolation, transmitting the current signal and the equipment state index to an adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode.
S5: after fault isolation, each intelligent distributed feeder automation terminal obtains the equipment state index and the current signal of the adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode according to the calculated local equipment state index and the locally acquired current signal to form a fault recovery criterion, and selects optimal equipment to recover power supply for a non-fault area according to the fault recovery criterion.
The method specifically comprises the following steps: and judging whether the current signal of the local and the current signal of the adjacent intelligent distributed feeder automation terminal are greater than the upper limit of the current-carrying capacity, if so, judging whether the action success rate of the local and adjacent equipment switches is greater than or equal to 2, and if so, taking the local and adjacent equipment switches as the optimal equipment switches to act to recover power supply to the non-fault area. Otherwise, the equipment switch does not act, and the next adjacent equipment switch is searched until the equipment switch with the switch action success rate more than or equal to 2 is found. In other embodiments, if a plurality of device switches greater than or equal to 2 are found in the non-failure area, the device switch with the highest success rate of switching operation is determined as the optimal device switch in the non-failure area.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (3)
1. An intelligent distributed feeder automation terminal considering ad hoc network device status, comprising:
the current acquisition module is used for acquiring a current signal;
the switch information acquisition module is used for acquiring a switch signal;
the peer-to-peer communication module is used for transmitting the current signal acquired by the current acquisition module and the switch signal acquired by the switch information acquisition module to the outside;
the control equipment is used for controlling the current acquisition module to acquire current signals of the distribution line when the distribution line has a fault, acquiring parameter information of the self-networking equipment through the distribution network production management platform to calculate an equipment state index, forming a fault criterion according to the calculated equipment state index and the acquired current signals, and performing fault isolation on the fault of the distribution line according to the fault criterion; and a fault recovery criterion is formed according to the calculated equipment state index and the acquired current signal, and the optimal equipment is selected according to the fault recovery criterion to recover power supply to the non-fault area;
the parameter information of the ad hoc network device comprises: on-line monitoring, state maintenance results, equipment failure rate and load rate, wherein the calculation mode of the equipment state index is as follows:
h is an equipment state index, O is online monitoring, K is a state maintenance result, and e is a constant;
the method comprises the following steps of forming a fault criterion together with a collected current signal according to a calculated equipment state index, and carrying out fault isolation on faults of the distribution line according to the fault criterion, wherein the fault isolation method specifically comprises the following steps:
judging whether the acquired current signal is an overcurrent signal, if so, performing fault positioning and determining a fault section;
calculating the success rate of the switching action of the equipment according to the equipment state index and the equipment fault rate:
judging whether the success rate of the switching action is more than or equal to 2, if so, performing equipment switching action to perform fault isolation, and otherwise, searching for an adjacent equipment switch in a peer-to-peer communication mode and calculating the success rate of the adjacent equipment switching action;
the method comprises the following steps of forming a fault recovery criterion together with a collected current signal according to a calculated equipment state index, and selecting optimal equipment to recover power supply to a non-fault area according to the fault recovery criterion, wherein the method specifically comprises the following steps:
and judging whether the acquired current signal is larger than the upper limit of the current-carrying capacity, if so, judging whether the switching action success rate of the equipment is larger than or equal to 2, and if so, taking the equipment as an optimal equipment switch to enable the equipment switch to act to recover power supply to a non-fault area.
2. A power distribution line fault isolation and recovery system, comprising the intelligent distributed feeder automation terminal according to claim 1, wherein the intelligent distributed feeder automation terminal is disposed at two or more ends of a power distribution line, and information is transmitted between adjacent intelligent distributed feeder automation terminals in a peer-to-peer communication manner;
when a distribution line has a fault, each intelligent distributed feeder automation terminal acquires current signals of the distribution line, acquires parameter information of self-networking equipment through a distribution network production management platform to calculate equipment state indexes, forms a fault criterion according to the calculated equipment state indexes and the acquired current signals, and performs fault isolation on the fault of the distribution line according to the fault criterion; specifically, the method comprises the following steps:
the parameter information of the ad hoc network device comprises: on-line monitoring, state maintenance results, equipment failure rate and load rate, wherein the calculation mode of the equipment state index is as follows:
h is an equipment state index, O is online monitoring, K is a state maintenance result, and e is a constant;
the method comprises the following steps of forming a fault criterion together with a collected current signal according to a calculated equipment state index, and carrying out fault isolation on faults of the distribution line according to the fault criterion, wherein the fault isolation method specifically comprises the following steps:
judging whether the acquired current signal is an overcurrent signal, if so, performing fault positioning and determining a fault section;
calculating the success rate of the switching action of the equipment according to the equipment state index and the equipment fault rate:
after fault isolation, each intelligent distributed feeder automation terminal obtains the equipment state index and the current signal of the adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode according to the calculated local equipment state index and the locally acquired current signal to form a fault recovery criterion, and selects optimal equipment to recover power supply to a non-fault area according to the fault recovery criterion, wherein the method specifically comprises the following steps:
and judging whether the acquired current signal is larger than the upper limit of the current-carrying capacity, if so, judging whether the switching action success rate of the equipment is larger than or equal to 2, and if so, taking the equipment as an optimal equipment switch to enable the equipment switch to act to recover power supply to a non-fault area.
3. A distribution line fault isolation and recovery method is characterized by comprising the following steps:
arranging the intelligent distributed feeder automation terminals according to claim 1 at two or more ends of a distribution line to collect current signals and switching signals of the distribution line, and transmitting information between adjacent intelligent distributed feeder automation terminals in a peer-to-peer communication manner;
the method comprises the following steps of arranging distribution network production information interface modules at two ends or multiple ends of a distribution line to obtain parameter information of ad hoc network equipment, wherein the parameter information comprises: online monitoring, state maintenance results, equipment failure rate and load rate;
when a distribution line has a fault, each intelligent distributed feeder automation terminal acquires current signals of the distribution line, acquires parameter information of self-networking equipment through a distribution network production information interface module to calculate equipment state indexes, forms fault criteria according to the calculated equipment state indexes and the acquired current signals, and performs fault isolation on the fault of the distribution line according to the fault criteria;
the calculation mode of the equipment state index is as follows:
h is an equipment state index, O is online monitoring, K is a state maintenance result, and e is a constant;
the method comprises the following steps of forming a fault criterion together with a collected current signal according to a calculated equipment state index, and carrying out fault isolation on faults of the distribution line according to the fault criterion, wherein the fault isolation method specifically comprises the following steps:
judging whether current signals at two ends of the adjacent intelligent distributed feeder automation terminals are over-current at the same time; if so, fault positioning is carried out;
after the fault section is determined, calculating the success rate of the switching action of the equipment by combining the equipment state index and the equipment fault rate:
judging whether the success rate of the equipment switch action is more than or equal to 2, if so, performing the equipment switch action to perform fault isolation, and otherwise, searching for an adjacent equipment switch in a peer-to-peer communication mode and calculating the success rate of the adjacent equipment switch action;
after fault isolation, transmitting the current signal and the equipment state index to an adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode;
after fault isolation, each intelligent distributed feeder automation terminal obtains the equipment state index and the current signal of the adjacent intelligent distributed feeder automation terminal in a peer-to-peer communication mode according to the calculated local equipment state index and the locally acquired current signal to form a fault recovery criterion, and selects optimal equipment to recover power supply to a non-fault area according to the fault recovery criterion, wherein the method specifically comprises the following steps: and judging whether the current signal of the local and the current signal of the adjacent intelligent distributed feeder automation terminal are larger than the upper limit of the current-carrying capacity, if so, judging whether the action success rate of the local and adjacent equipment switches is larger than or equal to 2, and if so, taking the local and adjacent equipment switches as the optimal equipment switches to act so as to recover power supply to the non-fault area.
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| CN110867960B (en) * | 2019-11-15 | 2021-06-04 | 珠海许继电气有限公司 | Power supply recovery protection method suitable for distributed feeder automation power distribution terminal |
| CN111711965B (en) * | 2020-08-20 | 2020-12-01 | 南京智汇电力技术有限公司 | Intelligent distributed FA fault positioning method based on wireless communication |
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