CN109301802B - Centralized feeder automation method with anti-error check function - Google Patents
Centralized feeder automation method with anti-error check function Download PDFInfo
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- CN109301802B CN109301802B CN201811444294.1A CN201811444294A CN109301802B CN 109301802 B CN109301802 B CN 109301802B CN 201811444294 A CN201811444294 A CN 201811444294A CN 109301802 B CN109301802 B CN 109301802B
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- 238000003825 pressing Methods 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000012795 verification Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 5
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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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- H02J13/0013—
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Abstract
The utility model provides a centralized feeder automation method that possesses anti-error check function, belongs to distribution automation technical field, and this technical scheme improves centralized feeder automation fault handling process, and after receiving the transformer substation and be qualified for the next round of competitions the switch trip signal, distribution automation main website and anti-error check module carry out information collection in step, check communication connection state and terminal equipment state through preventing the anti-error check module, and the terminal equipment sign that passes through to the check-up is credible equipment. After information collection is completed, the distribution automation master station only counts trusted equipment into the centralized feeder automation strategy making process, and the centralized feeder automation strategy correctness and action reliability are ensured.
Description
Technical Field
The invention relates to the technical field of distribution automation, in particular to a centralized feeder automation method with an anti-error check function.
Technical Field
An intelligent power distribution system is an important trend of intelligent power grid development, power distribution automation is an important link of intelligent sensing in the intelligent power distribution system and is an important basis for realizing considerable, measurable and controllable power distribution network, feeder automation bears functions of fault judgment and fault processing of the power distribution automation system, and an automation device or system is comprehensively applied to rapidly position and isolate power distribution network faults. Under the current construction mode of the distribution automation system, the centralized feeder automation becomes the main deployment mode of the urban and partial suburban feeder automation, and occupies a great position in the distribution automation construction application process.
Centralized feeder automation collects the fault information that the distribution terminal sent upward through the distribution main website and synthesizes and judge the trouble interval, and the comprehensiveness of information collection, the reliability of equipment performance are its fault judgment accuracy's basic guarantee. Because centralized feeder automation involves a plurality of work links, in the actual operation process, centralized feeder automation is easily influenced by communication condition, terminal performance and the like. Firstly, the dependence of centralized feeder automation on communication is strong, and under the conditions of optical fiber interruption, excessive light attenuation, excessive communication delay, damage of optical equipment such as an ONU (optical network unit) and the like, the collection of terminal state information is incomplete, so that a feeder automation strategy is influenced; secondly, similar to communication, when a power distribution terminal software or hardware fault causes a terminal to miss or mistakenly send fault information, the fault pushing error of the feeder automation is easily caused, so that the reliability of the feeder automation strategy execution is affected. The problems lead to the problems of misjudgment, missed judgment or failure of strategy execution and the like easily occurring in the centralized feeder automation practical application process, the application effect is deficient, the function of automatically analyzing and processing faults through the distribution automation system cannot be completely embodied, and the construction and application of distribution automation are also greatly limited.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a centralized feeder automation method with an anti-error check function, in the centralized feeder automation fault processing process, a communication condition and a terminal body condition are checked through an anti-error check module, and a check result is counted in the centralized feeder automation strategy making process, so that the centralized feeder automation strategy correctness and action reliability are ensured.
In order to achieve the purpose, the technical scheme adopted by the invention mainly comprises the following steps:
a centralized feeder automation method with an anti-error check function comprises the following steps:
1) after receiving tripping action information of an outgoing switch of the transformer substation, the distribution automation master station triggers a feeder automation function starting condition;
2) the distribution automation master station starts distribution automation terminal fault information in the general calling area, and synchronously starts the anti-error checking module to check whether the distribution automation terminal is a credible terminal or not;
3) the anti-error checking module sends a checking result to the distribution automation master station, the distribution automation terminal passing the checking is identified as a credible terminal, and the distribution automation terminal not passing the checking is identified as an incredible terminal;
4) the distribution automation main station judges a fault section according to the collected fault information reported by the credible terminal, formulates a fault isolation scheme by combining the actual power grid load condition, and realizes fault isolation and power supply recovery of a non-fault area in a full-automatic or semi-automatic mode.
Further, after the distribution automation master station receives the tripping action information of the outgoing line switch of the transformer substation, the information collection of the distribution automation terminal in the area and the anti-error check of the anti-error check module are synchronously executed; after the information of the distribution automation master station is collected, starting to judge a fault section after waiting for the error-proof module to report the error-proof result; the distribution automation terminal listed as an untrusted terminal in the error checking prevention process enters a locking state within the feeder automation action time, and operation is not allowed for the moment.
Further, the method comprises the following steps: the anti-error check module is embedded into the power distribution automation master station system and used as a functional module of the power distribution automation master station to share data of the power distribution automation master station.
Further, in the step 2), the distribution automation terminal should respond to the general calling command of the distribution automation master station and the anti-error check instruction of the anti-error check module simultaneously within the information collection time after the feeder automation is started.
Further, in the step 3), the information verification content of the anti-error verification module when the anti-error verification module verifies whether the distribution automation terminal is the trusted terminal includes two parts, namely a communication link state and a terminal device state, and when any part of the verification fails, the corresponding distribution automation terminal is determined to be an untrusted terminal.
Further, when the anti-error check module sends a check command to the distribution automation terminal, if the distribution automation terminal does not feed back, it is determined that communication is interrupted, that is, the communication link status check fails.
Further, the state of the terminal device called and tested by the anti-error check module mainly comprises: the method comprises the steps of controlling circuit disconnection, switch non-energy storage state, SF6 low-pressure alarm signal, line fault alarm, local position and operation pressing plate position division, and when any alarm signal exists, judging that the state of the terminal equipment is abnormal, namely the state of the terminal equipment is not verified.
Furthermore, when the power distribution automation terminal realizes the collection of the control loop disconnection signal, an auxiliary contact is additionally arranged in the control power supply idle switch, the control power supply idle switch position is collected, a signal collection channel is additionally arranged in the terminal, and the control loop disconnection signal is fed back to the power distribution terminal if the idle switch is positioned in the branch position.
Furthermore, distribution automation terminal installs the relay additional in circuit breaker SF6 table when realizing SF6 low atmospheric pressure alarm signal collection, monitors the atmospheric pressure condition, adds in the terminal and establishes the signal acquisition passageway, with signal transmission to distribution terminal, feeds back SF6 low atmospheric pressure signal to distribution terminal when the atmospheric pressure is low.
Furthermore, distribution automation terminal installs additional auxiliary contact in operating pressure plate both sides when realizing operating pressure plate position collection, gathers operating pressure plate position, adds in the terminal and establishes the signal acquisition passageway, with clamp plate position feedback to distribution terminal.
The centralized feeder automation strategy setting method is based on the technical characteristics of centralized feeder automation, the anti-error check module is arranged in the distribution automation master station, in the centralized feeder automation starting process, the anti-error check condition is sent to the distribution automation master station through the anti-error check module, and the communication fault and the equipment body fault condition are counted in the centralized feeder automation strategy setting process, so that the strategy accuracy and the action reliability of the centralized feeder automation are ensured.
Drawings
Fig. 1 is a flowchart of a centralized feeder automation method with an error checking prevention function;
fig. 2 is a logic judgment block diagram of the power distribution automation terminal checked by the anti-error check module to see whether the power distribution automation terminal is a trusted terminal.
Detailed Description
The invention provides a centralized feeder automation method with an anti-error check function, which can check communication conditions and terminal body conditions through an anti-error check module in the centralized feeder automation fault processing process, and count the check result into the centralized feeder automation strategy making process, thereby ensuring the strategy correctness and action reliability of the centralized feeder automation and improving the field application actual effect of the centralized feeder automation.
The invention relates to a centralized feeder automation method with an anti-error check function, the flow of which is shown in figure 1, and the method comprises the following steps:
1) after receiving tripping action information of an outgoing switch of the transformer substation, the distribution automation master station triggers a feeder automation function starting condition;
2) the distribution automation master station starts distribution automation terminal fault information in the general calling area, and synchronously starts the anti-error checking module to check whether the distribution automation terminal is a credible terminal or not;
3) the anti-error checking module sends a checking result to the distribution automation master station, the distribution automation terminal passing the checking is identified as a credible terminal, and the distribution automation terminal not passing the checking is identified as an incredible terminal;
4) the distribution automation main station judges a fault section according to the collected fault information reported by the credible terminal, formulates a fault isolation scheme by combining the actual power grid load condition, and realizes fault isolation and power supply recovery of a non-fault area in a full-automatic or semi-automatic mode.
After the centralized feeder automation function starting condition is triggered, when distribution automation terminal fault information in a distribution automation master station calling area is always called, the anti-error check module is synchronously started. After the information collection time of the power distribution automation terminal is read in seconds and the error checking prevention module is used for preventing error checking results from being transmitted, the power distribution automation master station carries out fault study and judgment according to collected fault information reported by the credible terminal and pushes a fault processing strategy.
As shown in fig. 2, the information verification content of the anti-error-verification module when verifying whether the distribution automation terminal is a trusted terminal mainly includes two aspects:
firstly, the communication link state, it is mainly whether normal to judge the communication state between distribution automation main website and the distribution automation terminal, avoid because the information that the communication is unblocked to cause misses and report, specific execution mode is through preventing that the check-up module sends the instruction of always calling out to distribution automation terminal, if the distribution automation terminal correctly responds the instruction of always calling out, then judge that communication state is normal, if distribution automation terminal does not respond, then judge that communication state is unusual.
And the terminal equipment state mainly judges whether the distribution automation and the primary equipment basic state are abnormal or not, so that the safety risk caused by the fact that the strategy execution is influenced by the equipment abnormality is avoided. The specific execution mode is that the error-connection error-prevention checking module sends a general calling instruction to the distribution automation terminal, if any information such as a control loop disconnection, a switch non-energy storage state, an SF6 low-pressure warning signal, a line fault warning, a local position, an operation pressing plate branching position and the like is sent upwards, the state of the terminal equipment is judged to be abnormal, and if any abnormal signal is not sent upwards, namely, a wireless line fault warning signal, a switch stored energy, an SF6 warning signal, a switch in a remote position and an operation pressing plate in a closed position are judged to be normal.
In order to meet various signals required by state verification of terminal equipment, the conventional power distribution automation terminal is modified appropriately, and relevant signal acquisition is perfected, wherein the method mainly comprises control loop disconnection, SF6 low-pressure alarm and operation pressing plate position, a corresponding acquisition channel needs to be configured at the terminal; for an SF6 low-pressure alarm signal, the existing distribution SF6 circuit breaker needs to be modified, a relay is additionally arranged in a circuit breaker SF6 meter, the air pressure condition is monitored, a signal contact is transmitted to a terminal, and if the air pressure is low, an SF6 low-pressure signal is fed back to the distribution terminal; to the operation clamp plate position, need reform transform current distribution terminal, install auxiliary contact additional in operation clamp plate both sides, gather operation clamp plate position to with clamp plate position feedback to distribution terminal.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A centralized feeder automation method with an anti-error check function is specifically characterized by comprising the following steps:
1) after receiving tripping action information of an outgoing switch of the transformer substation, the distribution automation master station triggers a feeder automation function starting condition;
2) the distribution automation master station starts distribution automation terminal fault information in the general calling area, and synchronously starts the anti-error checking module to check whether the distribution automation terminal is a credible terminal or not;
3) the anti-error checking module sends a checking result to the distribution automation master station, the distribution automation terminal passing the checking is identified as a credible terminal, and the distribution automation terminal not passing the checking is identified as an incredible terminal;
4) the distribution automation master station judges a fault section according to the collected fault information reported by the credible terminal, formulates a fault isolation scheme by combining the actual power grid load condition, and realizes fault isolation and power supply recovery of a non-fault area in a full-automatic or semi-automatic mode;
in the step 3), the information checking content of the anti-error checking module when the anti-error checking module checks whether the distribution automation terminal is a trusted terminal comprises two parts, namely a communication link state and a terminal equipment state, and when any part of the information checking content fails, the corresponding distribution automation terminal is judged to be an untrusted terminal;
when the anti-error check module sends a check command to the distribution automation terminal, if the distribution automation terminal does not feed back, the communication is judged to be interrupted, namely the communication link state check is not passed;
the state of the terminal equipment called and tested by the anti-error check module mainly comprises: the method comprises the steps of controlling circuit disconnection, switch non-energy storage state, SF6 low-pressure alarm signal, line fault alarm, local position and operation pressing plate position division, and when any alarm signal exists, judging that the state of the terminal equipment is abnormal, namely the state of the terminal equipment is not verified.
2. The centralized feeder automation method with an anti-error check function as claimed in claim 1, wherein: after the distribution automation master station receives the tripping action information of the outgoing line switch of the transformer substation, the information collection of the distribution automation terminal in the region and the anti-error check of the anti-error check module are synchronously executed; after the information of the distribution automation master station is collected, starting to judge a fault section after waiting for the error-proof module to report the error-proof result; the distribution automation terminal listed as an untrusted terminal in the error checking prevention process enters a locking state within the feeder automation action time, and operation is not allowed for the moment.
3. The centralized feeder automation method with an anti-error check function as claimed in claim 1, wherein: the anti-error check module is embedded into the power distribution automation master station system and used as a functional module of the power distribution automation master station to share data of the power distribution automation master station.
4. The centralized feeder automation method with an anti-error check function as claimed in claim 1, wherein: in the step 2), the distribution automation terminal should respond to the general calling command of the distribution automation main station and the anti-error check instruction of the anti-error check module simultaneously within the information collection time after the feeder automation is started.
5. The centralized feeder automation method with an anti-error check function as claimed in claim 1, wherein: when the power distribution automation terminal realizes the collection of the control loop disconnection signal, an auxiliary contact is additionally arranged in the control power supply idle switch, the control power supply idle switch position is collected, a signal collection channel is additionally arranged in the terminal, and the control loop disconnection signal is fed back to the power distribution terminal if the idle switch is positioned in a branch position.
6. The centralized feeder automation method with an anti-error check function as claimed in claim 1, wherein: distribution automation terminal installs the relay additional in circuit breaker SF6 table meter when realizing SF6 low-pressure alarm signal collection, monitors the atmospheric pressure condition, adds in the terminal and establishes signal acquisition passageway, with signal transmission to distribution terminal, feeds back SF6 low-pressure signal to distribution terminal when if the atmospheric pressure is low.
7. The centralized feeder automation method with an anti-error check function as claimed in claim 1, wherein: when the distribution automation terminal realizes the collection of the position of the operation pressing plate, auxiliary contacts are additionally arranged on two sides of the operation pressing plate to collect the position of the operation pressing plate, a signal collection channel is additionally arranged in the terminal, and the position of the pressing plate is fed back to the distribution terminal.
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| CN113128971B (en) * | 2021-04-27 | 2023-02-21 | 广东电网有限责任公司 | Intelligent substation outlet return verification method, device, equipment and medium based on universal configuration |
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| CN108879964B (en) * | 2018-08-10 | 2021-05-14 | 陕西银河天地智能配网技术有限公司 | On-site feeder automation system on-site verification transmission FA full-automatic test method |
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