CN117856175A - Centralized and in-situ interconversion feeder automation processing method and system - Google Patents
Centralized and in-situ interconversion feeder automation processing method and system Download PDFInfo
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- CN117856175A CN117856175A CN202311568089.7A CN202311568089A CN117856175A CN 117856175 A CN117856175 A CN 117856175A CN 202311568089 A CN202311568089 A CN 202311568089A CN 117856175 A CN117856175 A CN 117856175A
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- 238000011065 in-situ storage Methods 0.000 title claims abstract description 82
- 238000003672 processing method Methods 0.000 title claims abstract description 19
- 238000009826 distribution Methods 0.000 claims abstract description 150
- 238000000034 method Methods 0.000 claims abstract description 37
- 230000011664 signaling Effects 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 23
- 230000009471 action Effects 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 10
- 238000004590 computer program Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 230000007115 recruitment Effects 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides a centralized and in-situ type interconversion feeder automation processing method and system, which relate to the technical field of feeder automation and comprise the steps of dividing switch types in a distribution line; configuring all points required by two feeder automation operation modes of concentrated type FA and in-situ type FA for all switches except an outlet breaker on a distribution line, and configuring two reclosings for the outlet breaker; the method comprises the steps of configuring two operation parameters of a centralized FA and an in-situ FA for a power distribution automation master station, and setting three points of residual voltage locking, voltage losing and switching-off and incoming call delay switching-on of the first sectional switch to be effective in the centralized FA and in-situ FA modes; and adding a residual voltage locking item generated by the first sectionalizing switch under the concentrated FA mode starting condition, taking the existing terminal disconnection as an in-situ FA mode switching condition, and enabling the distribution circuit to have the interconversion capability of concentrated FAs and in-situ FAs. The invention improves the running reliability of the distribution line and reduces the line outage time.
Description
Technical Field
The invention relates to the technical field of feeder automation, in particular to a centralized and in-situ type interconversion feeder automation processing method and system.
Background
At present, feeder automation is used as a core technology of distribution automation, and plays a great role in monitoring the operation condition of distribution lines, positioning and isolating fault sections and recovering power supply of non-fault sections. The centralized feeder automation (Feeden Autonation, FA) is used as the most common feeder automation mode, has high reliability and low misoperation rate, can reduce fault isolation time and shortens the total line shutdown times of the distribution line. However, concentrated FAs have the following limitations:
1) The communication signal dependence is strong, and the fault isolation range can be enlarged under the condition that all or individual terminals of the line are disconnected.
2) In mountain western regions, the remote measurement of the outlet breaker, the collection of remote signaling information and the issuing of remote control instructions can only be carried out in a dispatching system of a main network, and if the outlet breaker breaks down to the first section switch of a line to cause the tripping of the outlet breaker, the distribution automation main station system cannot collect the line tripping information in time, and the FA is not started, so that the condition of complete line shutdown occurs.
Disclosure of Invention
Therefore, the embodiment of the invention provides a centralized and local type interconverted feeder automation processing method and system, which are used for solving the problems that in the prior art, the centralized FA has strong dependence on communication signals, the fault isolation range is enlarged when all or individual terminals of a line are disconnected, the remote measurement of an outlet breaker, the collection of remote signaling information and the issuing of a remote control instruction can only be carried out in a dispatching system of a main network, and the whole line is stopped when the FA is not started.
In order to solve the above problems, an embodiment of the present invention provides a centralized and in-situ type interconversion feeder automation processing method, including:
dividing switch types in a distribution line, wherein the switch types comprise a line outlet breaker, a first sectionalizer, a common sectionalizer and a tie switch;
configuring all points required by two feeder automation operation modes, namely centralized feeder automation and in-situ feeder automation, for all switches except the outlet circuit breaker on a distribution circuit, and configuring two reclosings for the outlet circuit breaker;
the method comprises the steps that two operation parameters of centralized feeder automation and in-situ feeder automation are configured for a power distribution automation master station, and three points of residual voltage locking, voltage losing and switching-off and incoming call delay switching-on of the first sectionalizing switch are set to be effective in the centralized feeder automation mode and in-situ feeder automation mode;
in the distribution automation master station system, a residual voltage locking item is added to a first sectional switch under a centralized feeder automation mode starting condition, a terminal disconnection is used as an in-situ feeder automation mode switching condition, and a distribution line has the interconversion capability of centralized feeder automation and in-situ feeder automation.
Preferably, the outlet breaker is an in-substation breaker; the first sectionalizer is a first breaker at the downstream of the outlet breaker, and a plurality of branches are arranged at the downstream, so that a plurality of first sectionalizers are arranged; the common sectional switches are all sectional switches except the first sectional switch; the interconnection switch is a switch for connecting two distribution lines, and is normally opened.
Preferably, the process of interconversion between centralized feeder automation and in-situ feeder automation specifically comprises:
under normal conditions, a distribution line is arranged to run in a centralized feeder automation mode;
when a permanent fault occurs between the outlet breaker and the first sectionalizing switch, the outlet breaker is subjected to overcurrent tripping, the first sectionalizing voltage-losing and switching-off is performed, then the switching-on failure of the outlet breaker is subjected to blocking, and the first sectionalizing switch is subjected to residual voltage blocking due to the fact that the instantaneous incoming call is detected;
when the distribution automation master station system receives the residual voltage locking remote signaling sent by the first sectionalized switch, the centralized feeder automation processing flow is started immediately, and when the outlet breaker and the first sectionalized switch are confirmed to be in a switching-off state, the distribution automation master station issues a switching-on command to the linkage switch to complete positioning and isolation of a fault area and restoration power supply of a non-fault area;
when an instantaneous fault occurs between the outlet breaker and the first sectionalizing switch, the outlet breaker is subjected to overcurrent tripping, the first sectionalizing voltage-losing and switching-off is performed, then the outlet breaker is successfully overlapped, and the first sectionalizing switch is successfully switched on in a delay mode;
when the distribution automation master station system receives permanent fault information at any position, a total calling command is issued to all terminals on a distribution line except the fault information from an outlet breaker to a first sectional switch of the line, and if a terminal is off, a terminal off-line remote signaling is uploaded;
if the distribution automation master station receives the remote signaling of the disconnection of the terminal, the distribution line is automatically converted into an in-situ feeder automation operation mode.
Preferably, when a permanent fault occurs between the outlet breaker and the first sectionalizer, the distribution line handling process specifically includes:
when a permanent fault occurs at an F1 point between the outlet breaker CB1 and the first sectionalizing switch FS11, the distribution automation master station receives the fault remote signaling information, the protection action of the outlet breaker CB1 trips, and the first sectionalizing switch FS11 is opened due to voltage loss;
the transformer substation outlet circuit breaker CB1 performs primary reclosing;
the outlet breaker CB1 is tripped by the protection action again because of the switching-on at the fault point, and the switching-on time is less than Y time, the outlet breaker CB1 is blocked and does not reclose for the second time; meanwhile, the first sectionalizing switch FS11 completes fault point positioning isolation because of detecting that the instantaneous residual voltage is blocked;
the first sectionalizing switch FS11 locks the remote signaling and sends the remote signaling to the distribution automation master station, and the distribution automation master station judges that a fault occurs between the outlet breaker CB1 and the first sectionalizing switch FS11, starts a feeder automation processing program, closes the interconnection switch LS and completes power supply of a non-fault area.
Preferably, when a transient fault occurs between the outlet breaker and the first sectionalizer, the distribution line handling process specifically includes:
when an instant fault occurs at the point F1 between the outlet breaker CB1 and the first sectionalizing switch FS11, the distribution automation master station receives the fault remote signaling information, the protection action of the outlet breaker CB1 trips, and the first sectionalizing switch FS11 is opened due to voltage loss;
the transformer substation outlet circuit breaker CB1 is reclosed once, and the fault between the outlet circuit breaker CB1 and the first sectionalized switch FS11 is disappeared, so that the outlet circuit breaker CB1 is successfully overlapped;
after 7s, the first sectionalizer switch FS11 is switched on successfully.
Preferably, when a terminal disconnection condition exists in the distribution line and a permanent fault occurs between the common sectionalizer and the common sectionalizer, the distribution line processing process specifically includes:
when permanent faults occur at the F2 point between the common sectionalizing switch FS12 and the common sectionalizing switch FS13, the power distribution automation master station receives fault remote signaling information, and starts a general calling program to find out that the common sectionalizing switch FS12 is disconnected, and randomly converts the normal sectionalizing switch FS12 into an in-situ feeder automation operation mode;
the line fault is detected by a transformer substation outgoing circuit breaker CB1, the protection action trips, all voltage-type switches of the distribution line 1 are disconnected due to voltage loss, and meanwhile, an interconnection switch LS starts X time countdown due to single-side voltage loss;
the outgoing line breaker CB1 is reclosed for the first time, the first sectionalizing switch FS11 is electrically closed after 7s, and after 7s, the common sectionalizing switch FS12 is electrically closed and combined with a fault point;
the outgoing line breaker CB1 trips through the protection action again, and the first sectionalizer FS11, the common sectionalizer FS12 and the common sectionalizer FS13 lose voltage and break off, and the common sectionalizer FS12 and the common sectionalizer FS13 are blocked;
the transformer substation outgoing line breaker CB1 is reclosed for the second time, and after 7s, the first sectioning switch FS11 of the distribution line 1 is closed;
and (3) ending the countdown of the X time of the liaison switch LS, automatically closing the switch, and recovering the power supply of the non-fault section.
Preferably, when a terminal disconnection condition exists in the distribution line and an instantaneous fault occurs between the common sectionalizer and the common sectionalizer, the distribution line processing process specifically comprises:
when an instantaneous fault occurs at an F2 point between the common sectionalizing switch FS12 and the common sectionalizing switch FS13, the power distribution automation master station receives the fault remote signaling information, and starts a general calling program to find out that the common sectionalizing switch FS12 is disconnected, and randomly converts the operation mode into an in-situ feeder automation operation mode;
the line fault is detected by a transformer substation outgoing circuit breaker CB1, the protection action trips, all voltage-type switches of the distribution line 1 are disconnected due to voltage loss, and meanwhile, an interconnection switch LS starts X time countdown due to single-side voltage loss;
the outgoing line breaker CB1 is reclosed for the first time, the first sectionalizing switch FS11 is turned on after 7s, the common sectionalizing switch FS12 is turned on after 7s, the fault at the F2 point is disappeared, and the common sectionalizing switch FS13 is turned on after 7s, so that the circuit is restored to normal power supply.
The embodiment of the invention also provides a centralized and in-situ interconversion feeder automation processing system, which comprises:
the switch type dividing module is used for dividing switch types in the distribution line, wherein the switch types comprise a line outlet breaker, a first sectionalizer, a common sectionalizer and a contact switch;
the switch configuration module is used for configuring all points required by two feeder automation operation modes, namely centralized feeder automation and in-situ feeder automation, for all switches except the outlet circuit breaker on the distribution circuit, and configuring two reclosings for the outlet circuit breaker;
the master station configuration module is used for configuring two operation parameters of centralized feeder automation and in-situ feeder automation for a power distribution automation master station, and setting three points of residual voltage locking, voltage loss switching-off and incoming call delay switching-on of the first sectional switch to be effective in the centralized feeder automation and in-situ feeder automation modes;
the condition setting module is used for adding a residual voltage locking item generated by a first section switch under the starting condition of the centralized feeder automation mode in the distribution automation master station system, taking the existing terminal disconnection as the switching condition of the local feeder automation mode, and the distribution circuit has the interconversion capability of the centralized feeder automation and the local feeder automation.
The embodiment of the invention also provides an electronic device, which comprises a processor, a memory and a bus system, wherein the processor and the memory are connected through the bus system, the memory is used for storing instructions, and the processor is used for executing the instructions stored by the memory so as to realize the centralized and in-situ interconverted feeder automation processing method.
The embodiment of the invention also provides a computer storage medium which stores a computer software product, wherein the computer software product comprises a plurality of instructions for enabling a piece of computer equipment to execute the centralized and in-situ interconverted feeder automation processing method.
From the above technical scheme, the invention has the following advantages:
(1) The invention configures the functions of residual voltage locking, voltage losing and switching-off and incoming call delay switching-on of the first sectional switch of the distribution line, and adds the residual voltage locking of the first sectional switch of the distribution line into the starting condition of the centralized FA, so that when the main distribution network information system is not switched on and the outlet breaker fails to the first sectional switch of the line, the distribution automation master station system can still acquire failure information in time, isolate a failure section and recover the power supply of the non-failure section; and the first sectional switch is simultaneously provided with the functions of voltage loss and switching off and incoming call delay switching on, so that the distribution line still has the capability of distinguishing instantaneous faults from permanent faults.
(2) The invention configures two types of parameter items of concentrated FA and local FA for all switches on a distribution line, so that the line has the capability of mutual conversion between the concentrated FA and the local FA, and normally operates in the concentrated FA mode, when permanent faults occur at any position of the line, the distribution automation master station firstly issues a total recruitment command to all terminals of the line so as to confirm the communication condition of the terminals and the master station, and when the condition of terminal disconnection is found, the master station automatically converts the mode into the local FA operation mode, thereby preventing the fault isolation range from expanding due to the terminal disconnection.
(3) The method is practical and simple, and can treat the line faults under the conditions that the main distribution network information system cannot be interconnected and the terminal is disconnected, thereby improving the operation reliability of the distribution line and reducing the outage time of the distribution line.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, reference will be made to the accompanying drawings, which are intended to be used in the examples, for a clearer understanding of the characteristics and advantages of the invention, by way of illustration and not to be interpreted as limiting the invention in any way, and from which, without any inventive effort, a person skilled in the art can obtain other figures. Wherein:
FIG. 1 is a flow chart of a centralized and in-situ type interconversion feeder automation process method provided in an embodiment;
FIG. 2 is a schematic diagram of a distribution line process when a permanent fault occurs between the outlet breaker and the first sectionalizer in an embodiment;
FIG. 3 is a schematic diagram of a distribution line process when a transient fault occurs between the outlet breaker and the first sectionalizer in an embodiment;
fig. 4 is a schematic diagram of a processing procedure of a distribution line when a terminal disconnection condition exists in the distribution line and a permanent fault occurs between a normal sectionalizer and a normal sectionalizer in the embodiment;
fig. 5 is a schematic diagram of a processing procedure of a distribution line when a terminal disconnection condition exists in the distribution line and an instantaneous fault occurs between a normal sectionalizer and a normal sectionalizer in the embodiment;
fig. 6 is a block diagram of a centralized and in-situ type interconverted feeder automation processing system provided in an embodiment.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, an embodiment of the present invention proposes a centralized and in-situ type interconversion feeder automation processing method, which includes:
s1: dividing switch types in a distribution line, wherein the switch types comprise a line outlet breaker, a first sectionalizer, a common sectionalizer and a tie switch;
s2: configuring all points required by two feeder automation operation modes, namely centralized feeder automation and in-situ feeder automation, for all switches except the outlet circuit breaker on a distribution circuit, and configuring two reclosings for the outlet circuit breaker;
s3: the method comprises the steps that two operation parameters of centralized feeder automation and in-situ feeder automation are configured for a power distribution automation master station, and three points of residual voltage locking, voltage losing and switching-off and incoming call delay switching-on of the first sectionalizing switch are set to be effective in the centralized feeder automation mode and in-situ feeder automation mode;
s4: in the distribution automation master station system, a residual voltage locking item is added to a first sectional switch under a centralized feeder automation mode starting condition, a terminal disconnection is used as an in-situ feeder automation mode switching condition, and a distribution line has the interconversion capability of centralized feeder automation and in-situ feeder automation.
As can be seen from the above technical solution, the present invention provides a centralized and local type feeder automation processing method for interconversion, which includes the steps of firstly configuring a first section switch of a distribution line with functions of "residual voltage blocking", "voltage losing and switching off", "incoming call delay switching on", and adding the first section switch of the distribution line with functions of "residual voltage blocking" to a starting condition of a centralized FA, so that when a main distribution network information system is not opened, when a fault occurs between an outlet breaker and the first section switch of the line, a distribution automation master station system can still timely acquire fault information, isolate a fault section, and recover power supply of a non-fault section; and the first sectional switch is simultaneously provided with the functions of voltage loss and switching off and incoming call delay switching on, so that the distribution line still has the capability of distinguishing instantaneous faults from permanent faults. Secondly, two types of parameter items, namely a centralized FA and an in-situ FA, are configured for all switches on a distribution line, so that the line has the capability of mutual conversion between the centralized FA and the in-situ FA, the line operates in a centralized FA mode under normal conditions, when permanent faults occur at any position of the line, a power distribution automation master station firstly issues a total recruitment command to all terminals of the line so as to confirm the communication condition of the terminals and the master station, and when the condition of terminal disconnection is found, the master station automatically converts the mode into the in-situ FA operation mode, and the fault isolation range is prevented from being enlarged due to the terminal disconnection. The method is practical and simple, and can treat the line faults under the conditions that the main distribution network information system cannot be interconnected and the terminal is disconnected, thereby improving the operation reliability of the distribution line and reducing the outage time of the distribution line.
In this embodiment, in step S1, the switch types in the distribution line are divided, and the switch types include a line outlet breaker, a first sectionalizer, a normal sectionalizer, and a tie switch. The outlet circuit breaker is a circuit breaker in a substation; the first sectionalizer is a first breaker at the downstream of the outlet breaker, and a plurality of branches are arranged at the downstream, so that a plurality of first sectionalizers are arranged; the common sectional switches are all sectional switches except the first sectional switch; the tie switch is a switch for connecting the two distribution lines, and is normally opened.
In this embodiment, in step S2, all points required for two feeder automation operation modes, i.e., a centralized FA and an in-situ FA, are configured for all switches on the distribution line except for the outlet circuit breaker, and two reclosings are configured for the outlet circuit breaker.
In this embodiment, in step S3, two operation parameters of a centralized FA and an in-situ FA are configured for the power distribution automation master station, and three points of residual voltage blocking, voltage loss switching-off and incoming call delay switching-on of the first section switch are set to be effective in the centralized FA and in-situ FA modes.
The invention configures concentrated FA and local FA parameter items for all switches on a distribution line to ensure that the line has the mutual conversion capability of the concentrated FA and the local FA, and normally operates in the concentrated FA mode, when the permanent fault occurs at any position of the line, the distribution automation master station firstly issues a total recruitment command to all terminals of the line so as to confirm the communication condition of the terminals and the master station, when the condition of terminal disconnection is found, the master station automatically changes into the local FA operation mode, thereby preventing the fault isolation range from expanding due to the terminal disconnection
In this embodiment, in step S4, in the power distribution automation master station system, a residual voltage blocking item is generated by adding a first section switch to a centralized FA mode starting condition, and a presence terminal is taken as an in-situ FA mode switching condition, so that the power distribution line has a capability of interconverting between a centralized FA and an in-situ FA.
According to the invention, residual voltage blocking occurs in the first sectional switch of the distribution line and the residual voltage blocking is added into the starting condition of the centralized FA, so that when the outlet breaker fails to the first sectional switch of the line under the condition that the main distribution network information system is not opened, the distribution automation master station system can still timely acquire failure information, isolate a failure zone and recover power supply of a non-failure zone; and the first sectional switch is simultaneously provided with the functions of voltage loss and switching off and incoming call delay switching on, so that the distribution line still has the capability of distinguishing instantaneous faults from permanent faults.
Specifically, the process of interconversion between centralized feeder automation and in-situ feeder automation specifically comprises:
under normal conditions, a distribution line is set to run in a centralized FA mode;
when a permanent fault occurs between the outlet breaker and the first sectionalizing switch, the outlet breaker is subjected to overcurrent tripping, the first sectionalizing voltage-losing and switching-off is performed, then the switching-on failure of the outlet breaker is subjected to blocking, and the first sectionalizing switch is subjected to residual voltage blocking due to the fact that the instantaneous incoming call is detected;
when the distribution automation master station system receives the residual voltage locking remote signaling sent by the first sectionalized switch, the centralized FA processing flow is started immediately, and when the outlet breaker and the first sectionalized switch are confirmed to be in a switching-off state, the distribution automation master station issues a switching-on command to the linkage switch, so that the positioning and isolation of a fault area and the restoration power supply of a non-fault area are completed;
when an instantaneous fault occurs between the outlet breaker and the first sectionalizing switch, the outlet breaker is subjected to overcurrent tripping, the first sectionalizing voltage-losing and switching-off is performed, then the outlet breaker is successfully overlapped, and the first sectionalizing switch is successfully switched on in a delay mode;
when the distribution automation master station system receives permanent fault information at any position, a total calling command is issued to all terminals on a distribution line except the fault information from an outlet breaker to a first sectional switch of the line, and if a terminal is off, a terminal off-line remote signaling is uploaded;
if the distribution automation master station receives the existing terminal disconnection remote signaling, the distribution line is automatically converted into an in-situ FA operation mode.
To better illustrate the advantages of the present invention, a description is given below in connection with a specific failure of a distribution line.
1. When a permanent fault occurs between the outlet breaker and the first sectionalizer, the distribution line processing process specifically includes:
1.1, the line is normally powered, as shown in fig. 2 (a).
1.2, when a permanent fault occurs at the point F1 between the outlet breaker CB1 and the first sectionalizing switch FS11, the distribution automation master station receives the fault remote signaling information, the protection action of the outlet breaker CB1 trips, and the first sectionalizing switch FS11 is opened due to voltage loss, as shown in fig. 2 (b).
1.3, the transformer substation outlet circuit breaker CB1 performs one reclosing, as shown in fig. 2 (c).
1.4, because the switching-on is at the fault point, the outlet breaker CB1 is tripped by the protection action again, and because the switching-on time is less than Y time, the outlet breaker CB1 is blocked and does not reclose for the second time; meanwhile, the first segment switch FS11 completes the fault point locating isolation due to the detection of the blocking of the instantaneous residual voltage, as shown in fig. 2 (d).
1.5, the first sectionalizing switch FS11 locks the remote signaling and sends the remote signaling to the distribution automation master station, and the distribution automation master station judges that a fault occurs between the outlet breaker CB1 and the first sectionalizing switch FS11 and starts a feeder automation processing program, closes the interconnection switch LS, and completes the power supply of a non-fault area, as shown in fig. 2 (e).
2. When an instantaneous fault occurs between the outlet breaker and the first sectionalizer, the distribution line processing process specifically includes:
2.1, the distribution line normally supplies power, as shown in fig. 3 (a);
2.2, when an instantaneous fault occurs at the point F1 between the outlet breaker CB1 and the first sectionalizing switch FS11, the distribution automation master station receives the fault remote signaling information, the protection action of the outlet breaker CB1 trips, and the first sectionalizing switch FS11 is opened due to voltage loss, as shown in fig. 3 (b);
2.3, reclosing the outlet circuit breaker CB1 of the transformer substation once, wherein the fault between the outlet circuit breaker CB1 and the first sectionalizing switch FS11 is disappeared, and the outlet circuit breaker CB1 is successfully overlapped, as shown in fig. 3 (c);
2.4, after 7s, the first sectionalizer FS11 is switched on successfully with a delay, as shown in fig. 3 (d).
3. When the distribution line has the condition of terminal disconnection and permanent faults occur between the common sectionalizer and the common sectionalizer, the distribution line processing process specifically comprises the following steps:
3.1, the distribution line supplies power normally, as shown in fig. 4 (a);
3.2, when a permanent fault occurs at an F2 point between the normal sectionalizing switch FS12 and the normal sectionalizing switch FS13, the power distribution automation master station receives the fault remote signaling information, and starts a general calling program to find that the normal sectionalizing switch FS12 is disconnected, and randomly converts the normal sectionalizing switch FS12 into an in-situ feeder automation operation mode, as shown in fig. 4 (b);
3.3, detecting line faults by the substation outgoing circuit breaker CB1, tripping the protection action, opening all voltage-type switches of the distribution line 1 due to voltage loss, and starting X time countdown by the contact switch LS due to single-side voltage loss, as shown in fig. 4 (c);
3.4, the outgoing line breaker CB1 is reclosed for the first time, after 7s, the first sectionalizing switch FS11 is closed electrically, and after 7s, the common sectionalizing switch FS12 is closed electrically and is combined with a fault point, as shown in fig. 4 (d);
3.5, tripping the protective action of the outgoing line breaker CB1 again, wherein the first sectionalizing switch FS11, the common sectionalizing switch FS12 and the common sectionalizing switch FS13 are subjected to voltage-loss and switching-off, and the common sectionalizing switch FS12 and the common sectionalizing switch FS13 are subjected to locking, as shown in fig. 4 (e);
3.6, reclosing the transformer substation outgoing circuit breaker CB1 for the second time, and closing the first sectionalizing switch FS11 of the distribution line 1 after 7s, as shown in fig. 4 (f);
and 3.7, ending the countdown of the X time of the tie switch LS, automatically switching on, and recovering the power supply of the non-fault section, as shown in fig. 4 (g).
4. When the distribution line has the condition of terminal disconnection and transient faults occur between the common sectionalizer and the common sectionalizer, the distribution line processing process specifically comprises the following steps:
4.1, the distribution line normally supplies power, as shown in fig. 5 (a);
4.2, when an instant fault occurs at the point F2 between the normal sectionalizing switch FS12 and the normal sectionalizing switch FS13, the power distribution automation master station receives the fault remote signaling information, and the power distribution automation master station starts a general calling program to find that the normal sectionalizing switch FS12 is disconnected and randomly converts the normal sectionalizing switch FS12 into an in-situ feeder automation operation mode, as shown in fig. 5 (b);
4.3, detecting line faults by a transformer substation outgoing circuit breaker CB1, tripping a protection action, opening all voltage-type switches of the distribution line 1 due to voltage loss, and starting X time countdown by a contact switch LS due to single-side voltage loss, as shown in fig. 5 (c);
4.4, the outgoing line breaker CB1 is reclosed for the first time, after 7s, the first sectionalizing switch FS11 is turned on, after 7s, the common sectionalizing switch FS12 is turned on, because the fault at the F2 point is disappeared, after 7s, the common sectionalizing switch FS13 is turned on, and the circuit is restored to normal power supply, as shown in fig. 5 (d).
Example two
As shown in fig. 6, the present invention provides a centralized and in-situ type interconversion FA processing system, which is configured to implement the centralized and in-situ type interconversion FA processing method according to the first embodiment, and specifically includes:
a switch type dividing module 10, configured to divide switch types in a distribution line, where the switch types include a line outlet breaker, a first sectionalizer, a common sectionalizer, and a tie switch;
the switch configuration module 20 is configured to configure all points required by two FA operation modes, namely a centralized FA and an in-situ FA, for all switches except the outlet circuit breaker on the distribution circuit, and to configure two reclosings for the outlet circuit breaker;
the master station configuration module 30 is configured to configure two operation parameters of a centralized FA and an in-situ FA for the power distribution automation master station, and set three points of residual voltage locking, voltage loss switching-off and incoming call delay switching-on of the first section switch to be effective in the centralized FA and in-situ FA modes;
the condition setting module 40 is configured to add a residual voltage blocking item to the first section switch in the centralized FA mode starting condition in the power distribution automation master station system, and take the existing terminal drop as the in-situ FA mode switching condition, where the power distribution line has the capability of interconverting between centralized FA and in-situ FA.
In the embodiment, the FA processing system for centralized-type and in-situ type interconversion is used to implement the FA processing method for centralized-type and in-situ type interconversion, so that the specific implementation of the centralized-type and in-situ type interconversion FA processing system can be seen as the example part of the FA processing method for centralized-type and in-situ type interconversion, for example, the switch type dividing module 10, the switch configuration module 20, the master station configuration module 30, and the condition setting module 40 are respectively used to implement steps S1, S2, S3, and S4 in the FA processing method for centralized-type and in-situ type interconversion, so that the specific implementation thereof can refer to the description of the corresponding examples of the respective parts, and will not be repeated herein for avoiding redundancy.
Example III
The embodiment of the invention also provides an electronic device, which comprises a processor, a memory and a bus system, wherein the processor and the memory are connected through the bus system, the memory is used for storing instructions, and the processor is used for executing the instructions stored by the memory so as to realize the centralized and in-situ conversion FA processing method.
Example IV
The embodiment of the invention also provides a computer storage medium, which stores a computer software product, wherein the computer software product comprises a plurality of instructions for enabling a piece of computer equipment to execute the FA processing method for centralized and in-situ type interconversion.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present invention will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present invention.
Claims (10)
1. A method for automating feeder processing for interconversion between centralized and in-situ, comprising:
dividing switch types in a distribution line, wherein the switch types comprise a line outlet breaker, a first sectionalizer, a common sectionalizer and a tie switch;
configuring all points required by two feeder automation operation modes, namely centralized feeder automation and in-situ feeder automation, for all switches except the outlet circuit breaker on a distribution circuit, and configuring two reclosings for the outlet circuit breaker;
the method comprises the steps that two operation parameters of centralized feeder automation and in-situ feeder automation are configured for a power distribution automation master station, and three points of residual voltage locking, voltage losing and switching-off and incoming call delay switching-on of the first sectionalizing switch are set to be effective in the centralized feeder automation mode and in-situ feeder automation mode;
in the distribution automation master station system, a residual voltage locking item is added to a first sectional switch under a centralized feeder automation mode starting condition, a terminal disconnection is used as an in-situ feeder automation mode switching condition, and a distribution line has the interconversion capability of centralized feeder automation and in-situ feeder automation.
2. The centralized and in-situ conversion feeder automation processing method of claim 1, wherein the outlet circuit breaker is an in-substation circuit breaker; the first sectionalizer is a first breaker at the downstream of the outlet breaker, and a plurality of branches are arranged at the downstream, so that a plurality of first sectionalizers are arranged; the common sectional switches are all sectional switches except the first sectional switch; the interconnection switch is a switch for connecting two distribution lines, and is normally opened.
3. The concentrated and in-situ type interconversion feeder automation processing method of claim 1, wherein the concentrated and in-situ type feeder automation interconversion process specifically comprises:
under normal conditions, a distribution line is arranged to run in a centralized feeder automation mode;
when a permanent fault occurs between the outlet breaker and the first sectionalizing switch, the outlet breaker is subjected to overcurrent tripping, the first sectionalizing voltage-losing and switching-off is performed, then the switching-on failure of the outlet breaker is subjected to blocking, and the first sectionalizing switch is subjected to residual voltage blocking due to the fact that the instantaneous incoming call is detected;
when the distribution automation master station system receives the residual voltage locking remote signaling sent by the first sectionalized switch, the centralized feeder automation processing flow is started immediately, and when the outlet breaker and the first sectionalized switch are confirmed to be in a switching-off state, the distribution automation master station issues a switching-on command to the linkage switch to complete positioning and isolation of a fault area and restoration power supply of a non-fault area;
when an instantaneous fault occurs between the outlet breaker and the first sectionalizing switch, the outlet breaker is subjected to overcurrent tripping, the first sectionalizing voltage-losing and switching-off is performed, then the outlet breaker is successfully overlapped, and the first sectionalizing switch is successfully switched on in a delay mode;
when the distribution automation master station system receives permanent fault information at any position, a total calling command is issued to all terminals on a distribution line except the fault information from an outlet breaker to a first sectional switch of the line, and if a terminal is off, a terminal off-line remote signaling is uploaded;
if the distribution automation master station receives the remote signaling of the disconnection of the terminal, the distribution line is automatically converted into an in-situ feeder automation operation mode.
4. A centralized and in-situ type interconverted feeder automation process in accordance with claim 3, wherein the distribution line process comprises in particular:
when a permanent fault occurs at an F1 point between the outlet breaker CB1 and the first sectionalizing switch FS11, the distribution automation master station receives the fault remote signaling information, the protection action of the outlet breaker CB1 trips, and the first sectionalizing switch FS11 is opened due to voltage loss;
the transformer substation outlet circuit breaker CB1 performs primary reclosing;
the outlet breaker CB1 is tripped by the protection action again because of the switching-on at the fault point, and the switching-on time is less than Y time, the outlet breaker CB1 is blocked and does not reclose for the second time; meanwhile, the first sectionalizing switch FS11 completes fault point positioning isolation because of detecting that the instantaneous residual voltage is blocked;
the first sectionalizing switch FS11 locks the remote signaling and sends the remote signaling to the distribution automation master station, and the distribution automation master station judges that a fault occurs between the outlet breaker CB1 and the first sectionalizing switch FS11, starts a feeder automation processing program, closes the interconnection switch LS and completes power supply of a non-fault area.
5. A centralized and in-situ type interconverted feeder automation process in accordance with claim 3, wherein the distribution line process comprises:
when an instant fault occurs at the point F1 between the outlet breaker CB1 and the first sectionalizing switch FS11, the distribution automation master station receives the fault remote signaling information, the protection action of the outlet breaker CB1 trips, and the first sectionalizing switch FS11 is opened due to voltage loss;
the transformer substation outlet circuit breaker CB1 is reclosed once, and the fault between the outlet circuit breaker CB1 and the first sectionalized switch FS11 is disappeared, so that the outlet circuit breaker CB1 is successfully overlapped;
after 7s, the first sectionalizer switch FS11 is switched on successfully.
6. The method for processing centralized and in-situ type interconversion feeder automation as claimed in claim 3, wherein when a terminal disconnection condition exists in the distribution line, and when a permanent fault occurs between the normal sectionalizer and the normal sectionalizer, the distribution line processing process specifically comprises:
when permanent faults occur at the F2 point between the common sectionalizing switch FS12 and the common sectionalizing switch FS13, the power distribution automation master station receives fault remote signaling information, and starts a general calling program to find out that the common sectionalizing switch FS12 is disconnected, and randomly converts the normal sectionalizing switch FS12 into an in-situ feeder automation operation mode;
the line fault is detected by a transformer substation outgoing circuit breaker CB1, the protection action trips, all voltage-type switches of the distribution line 1 are disconnected due to voltage loss, and meanwhile, an interconnection switch LS starts X time countdown due to single-side voltage loss;
the outgoing line breaker CB1 is reclosed for the first time, the first sectionalizing switch FS11 is electrically closed after 7s, and after 7s, the common sectionalizing switch FS12 is electrically closed and combined with a fault point;
the outgoing line breaker CB1 trips through the protection action again, and the first sectionalizer FS11, the common sectionalizer FS12 and the common sectionalizer FS13 lose voltage and break off, and the common sectionalizer FS12 and the common sectionalizer FS13 are blocked;
the transformer substation outgoing line breaker CB1 is reclosed for the second time, and after 7s, the first sectioning switch FS11 of the distribution line 1 is closed;
and (3) ending the countdown of the X time of the liaison switch LS, automatically closing the switch, and recovering the power supply of the non-fault section.
7. The method for processing centralized and in-situ type interconversion feeder automation as claimed in claim 3, wherein when a terminal disconnection condition exists in the distribution line, and when an instantaneous fault occurs between the normal sectionalizer and the normal sectionalizer, the distribution line processing process specifically comprises:
when an instantaneous fault occurs at an F2 point between the common sectionalizing switch FS12 and the common sectionalizing switch FS13, the power distribution automation master station receives the fault remote signaling information, and starts a general calling program to find out that the common sectionalizing switch FS12 is disconnected, and randomly converts the operation mode into an in-situ feeder automation operation mode;
the line fault is detected by a transformer substation outgoing circuit breaker CB1, the protection action trips, all voltage-type switches of the distribution line 1 are disconnected due to voltage loss, and meanwhile, an interconnection switch LS starts X time countdown due to single-side voltage loss;
the outgoing line breaker CB1 is reclosed for the first time, the first sectionalizing switch FS11 is turned on after 7s, the common sectionalizing switch FS12 is turned on after 7s, the fault at the F2 point is disappeared, and the common sectionalizing switch FS13 is turned on after 7s, so that the circuit is restored to normal power supply.
8. A centralized and in-situ type interconversion feeder automation processing system, characterized in that it is adapted to implement the centralized and in-situ type interconversion feeder automation processing method of any of claims 1 to 7, comprising in particular:
the switch type dividing module is used for dividing switch types in the distribution line, wherein the switch types comprise a line outlet breaker, a first sectionalizer, a common sectionalizer and a contact switch;
the switch configuration module is used for configuring all points required by two feeder automation operation modes, namely centralized feeder automation and in-situ feeder automation, for all switches except the outlet circuit breaker on the distribution circuit, and configuring two reclosings for the outlet circuit breaker;
the master station configuration module is used for configuring two operation parameters of centralized feeder automation and in-situ feeder automation for a power distribution automation master station, and setting three points of residual voltage locking, voltage loss switching-off and incoming call delay switching-on of the first sectional switch to be effective in the centralized feeder automation and in-situ feeder automation modes;
the condition setting module is used for adding a residual voltage locking item generated by a first section switch under the starting condition of the centralized feeder automation mode in the distribution automation master station system, taking the existing terminal disconnection as the switching condition of the local feeder automation mode, and the distribution circuit has the interconversion capability of the centralized feeder automation and the local feeder automation.
9. An electronic device comprising a processor, a memory and a bus system, the processor and the memory being connected by the bus system, the memory being configured to store instructions, the processor being configured to execute the instructions stored by the memory to implement the centralized and in-situ type interconverted feeder automation process of any of claims 1 to 7.
10. A computer storage medium storing a computer software product comprising instructions for causing a computer device to perform the centralized and in-situ type of inter-conversion feeder automation process of any one of claims 1 to 7.
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| CN202311568089.7A CN117856175A (en) | 2023-11-23 | 2023-11-23 | Centralized and in-situ interconversion feeder automation processing method and system |
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