CN107153151B - Quick response method and system for power failure fault of low-voltage power grid user line - Google Patents
Quick response method and system for power failure fault of low-voltage power grid user line Download PDFInfo
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- CN107153151B CN107153151B CN201710535157.8A CN201710535157A CN107153151B CN 107153151 B CN107153151 B CN 107153151B CN 201710535157 A CN201710535157 A CN 201710535157A CN 107153151 B CN107153151 B CN 107153151B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
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Abstract
The invention relates to the field of distribution automation, and discloses a method and a system for quickly responding to a power failure fault of a low-voltage power grid user line, which are used for quickly responding to the power failure fault of the low-voltage power grid user line, improving operation and maintenance efficiency and improving service level. The method comprises the following steps: the electric energy meter communication module detects whether a power failure fault occurs in real time or acquires the power failure fault from the electric energy meter, generates power failure fault information by using the power supply of the standby power supply after the fault is detected, and sends the power failure fault information to the concentrator in a wired or wireless mode; the concentrator sends the power failure fault information and the attribute information of the concentrator to a master station; and the master station analyzes the power failure fault information forwarded by the corresponding concentrator, starts remote meter reading in a wired or wireless mode on the target electric energy meter according to the analysis result, confirms that the power failure fault information is effective if the meter reading cannot be normally carried out, and starts a corresponding emergency repair process.
Description
Technical Field
The invention relates to the field of distribution automation, in particular to a method and a system for quickly responding to a power failure fault of a low-voltage power grid user line.
Background
The power failure fault is one of the common faults in the power grid system, and with the advance of the construction of the smart power grid, for the power failure fault occurring on a main line or a branch line of a power distribution network, relevant fault information can be timely and accurately mastered through a power distribution network automation and electric energy online monitoring system, but when the power failure fault occurs on a subscriber line of a low-voltage power grid, the relevant fault information can be obtained only when a user needs to report and repair, so that maintenance personnel can master the fault information for a long period, and the user complaint is often caused. At present, an intelligent electric energy meter used by a part of newly-built cells or modified cells has an event reporting function, emergency events such as uncovering of the electric energy meter and the like can be reported in time, but the event of power failure of the electric energy meter can be reported only after failure recovery. Because the power failure fault in the current fault reported information can only be positioned to a section or branch line with wide line coverage and corresponding power failure detection equipment; and the equipment for detecting the power failure of the section or the branch line is not suitable for the household electric energy meter due to the factors of large volume, high cost and the like, so that the conventional individualized electric energy meter cannot realize active rush repair when the power failure occurs, and great inconvenience is often brought to the life of people.
Therefore, it is needed to provide a method and a system for quickly responding to a power-down fault of a low-voltage power grid subscriber line, which can quickly respond to the power-down fault of the low-voltage power grid subscriber line, improve operation and maintenance efficiency, and improve service level.
Disclosure of Invention
The invention aims to provide a method and a system for quickly responding to the power-down fault of a low-voltage power grid user line, which can quickly respond to the power-down fault of the low-voltage power grid user line, improve the operation and maintenance efficiency and improve the service level.
In order to achieve the aim, the invention provides a method for quickly responding to a power failure fault of a low-voltage power grid subscriber line, which comprises the following steps:
after the electric energy meter is normally powered, sending electric energy meter information to a concentrator of the transformer area by utilizing a built-in electric energy meter communication module to generate a transformer area topological graph; after receiving the electric energy meter information, the concentrator sends the electric energy meter information and the attribute information thereof to the master station together to generate a regional topological graph;
the electric energy meter communication module detects in real time or acquires whether a power failure fault occurs from the electric energy meter, generates power failure fault information by using the power supply of the standby power supply after the fault is detected, and sends the power failure fault information to the concentrator in a wired or wireless mode;
the concentrator sends the power failure fault information and the attribute information of the concentrator to a master station; the power failure fault information received by the master station comprises a concentrator number, longitude and latitude geographical position information of the concentrator, a phase line number of an electric energy meter, a meter box number of the electric energy meter, an electric energy meter number and longitude and latitude geographical position information of the electric energy meter;
the master station analyzes the power failure fault information forwarded by the corresponding concentrator, determines the analyzed and extracted electric energy meter number as a target electric energy meter which is read in a wired or wireless mode to confirm whether the power failure fault information is valid, starts remote reading of the target electric energy meter in a wired or wireless mode, confirms that the power failure fault information is valid if normal reading is not possible, and starts a corresponding emergency repair process;
the standby power supply only supplies power to the electric energy meter communication module, and the energy storage of the standby power supply at least meets the requirement that the electric energy meter communication module reports power failure fault information for one time.
Preferably, the standby power supply is a super capacitor or other energy storage elements with high energy density, and the super capacitor or other energy storage elements are connected with the electric energy meter communication module.
Preferably, a power failure detection unit based on the following principle is arranged in the electric energy meter communication module: comparing the voltage acquired and converted by the electric energy meter from the bus with the constant voltage provided by the standby power supply, and if the voltage is lower than the constant voltage value, determining that a power failure fault occurs; or the electric energy meter communication module is associated with a newly-arranged microcontroller to acquire the power failure fault, or an original microcontroller in the electric energy meter communication module is utilized to acquire the power failure fault, the microcontroller detects the voltage value acquired and converted from the bus of the electric energy meter in real time, and if the detected voltage value exceeds a set value by a specified value or is detected to be a certain set level, the power failure fault is considered to occur.
In order to achieve the above object, the present invention provides a system for quickly responding to a power failure fault of a low-voltage power grid subscriber line, comprising:
the electric energy meter is used for sending electric energy meter information to a concentrator of the transformer area by using a built-in electric energy meter communication module after normal power supply so as to generate a transformer area topological graph; the electric energy meter communication module is also used for detecting whether a power failure fault occurs in real time or acquiring from the electric energy meter, generating power failure fault information by using the power supply of the standby power supply after the fault is detected, and sending the power failure fault information to the concentrator in a wired or wireless mode; the standby power supply only supplies power to the electric energy meter communication module, and the energy storage of the standby power supply at least meets the requirement that the electric energy meter communication module reports power failure fault information for one time;
the concentrator is used for sending the information of the electric energy meter and the attribute information of the concentrator to a master station together to generate a regional topological graph and sending the power failure fault information and the attribute information of the concentrator to the master station; the power failure fault information received by the master station comprises a concentrator number, longitude and latitude geographical position information of the concentrator, a phase line number of an electric energy meter, a meter box number of the electric energy meter, an electric energy meter number and longitude and latitude geographical position information of the electric energy meter;
the master station is used for analyzing the power failure fault information forwarded by the corresponding concentrator, determining the analyzed and extracted electric energy meter number as a target electric energy meter which is read in a wired or wireless mode to confirm whether the power failure fault information is valid or not, starting remote meter reading in a wired or wireless mode on the target electric energy meter, and if the power failure fault information is valid, starting a corresponding rush-repair process.
The invention has the following beneficial effects:
the invention provides a method and a system for quickly responding to a power failure fault of a user line of a low-voltage power grid, wherein the method and the system send power failure fault information and electric energy meter information to a concentrator through an electric energy meter and an electric energy meter communication module, the concentrator forwards the power failure fault information to a master station, then the master station analyzes the power failure fault information forwarded by the corresponding concentrator, and starts meter reading of a target electric energy meter in a wired (power line carrier, RS485 and the like) or wireless mode according to an analysis result, if the meter reading cannot be normally performed, the power failure fault information is confirmed to be effective, and a corresponding emergency repair process is started. The invention can quickly respond to the power failure fault of the low-voltage power grid user line, improve the operation and maintenance efficiency and improve the service level.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart of a method for fast response to a low voltage grid subscriber line power down fault in accordance with a preferred embodiment of the present invention;
fig. 2 is a block diagram of a low-voltage grid subscriber line power-down fault rapid response system in accordance with a preferred embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Example 1
Referring to fig. 1, the present embodiment discloses a method for quickly responding to a power failure fault of a low-voltage power grid subscriber line, including:
after the electric energy meter is normally powered, sending electric energy meter information to a concentrator of the transformer area by utilizing a built-in electric energy meter communication module to generate a transformer area topological graph; after receiving the electric energy meter information, the concentrator sends the electric energy meter information and the attribute information of the concentrator to the master station together to generate a regional topological graph.
And then, the electric energy meter communication module detects whether a power failure fault occurs in real time or acquires the power failure fault from the electric energy meter, generates power failure fault information by using the power supply of the standby power supply after the fault is detected, and sends the power failure fault information to the concentrator in a wired (power line carrier, RS485 and the like) or wireless mode. The standby power supply only supplies power to the electric energy meter communication module, and the energy storage of the standby power supply at least meets the requirement that the electric energy meter communication module reports power failure fault information for one time. Preferably, the standby power supply is a super capacitor or other energy storage elements with high energy density, which are connected with the electric energy meter communication module; the energy storage is carried out under the normal power supply condition that the electric energy meter is not powered down; during energy release, the limited power supply duration also ensures the accuracy of fault confirmation of subsequent remote meter reading; therefore, the whole scheme of the embodiment is more energy-saving and environment-friendly, and the cost can be effectively reduced.
And then, the concentrator transmits the power failure fault information and the self attribute information to the master station. Optionally, the power failure fault information includes a concentrator number, longitude and latitude geographical position information of the concentrator, a phase line number to which the electric energy meter belongs, a meter box number to which the electric energy meter belongs, an electric energy meter number, longitude and latitude geographical position information of the electric energy meter, and the like.
And then, the master station analyzes the power failure fault information forwarded by the corresponding concentrator, starts remote meter reading in a wired or wireless mode on the target electric energy meter according to the analysis result, confirms that the power failure fault information is effective if the meter reading cannot be normally carried out, and starts a corresponding emergency repair process. Optionally, in this embodiment, the analyzed and extracted electric energy meter number is determined as a target electric energy meter that is checked in a wired or wireless manner to determine whether the power failure fault information is valid. In the step of meter reading for fault confirmation, the master station needs to interact with the electric energy meter communication module; in one case, if the standby power supply of the electric energy meter communication module is insufficient to generate and send related information for the second time, the meter reading failure is directly caused; in another situation, the communication module of the electric energy meter is powered by the standby power supply, but other functional circuits of the electric energy meter are powered off, so that related data required by meter reading cannot be acquired, feedback information of meter reading failure and related error codes are fed back to the concentrator, and the concentrator forwards the feedback information to the master station; in this mode, the energy storage of the backup power supply needs to complete one time of interaction initiated by the master station to confirm that the power failure information is valid. Further, in this embodiment, in order to eliminate interference of power failure of the electric energy meter due to energy storage of other capacitors inside the electric energy meter on subsequent meter reading confirmation, the master station can reasonably determine the time for remote meter reading.
In this embodiment, preferably, a positioning device is arranged inside the electric energy meter communication module (for example, the positioning device is a GPS positioning device, but the present invention is not limited thereto, and the positioning device may also be a device capable of implementing the same function, such as a beidou positioning device, etc.), so as to provide the positioning information required by the power failure fault information and the electric energy meter information. The positioning information comprises the electric energy meter number, longitude and latitude geographic position information of the electric energy meter and the like, and the position of the unique position in the transformer area is determined through combination.
Referring to fig. 2, specifically, an electric energy meter communication module is installed on the electric energy meter, and after the electric energy meter is normally powered, the electric energy meter sends related attribute information of the electric energy meter, such as an electric energy meter number, a meter box number to which the electric energy meter belongs, a phase line number to which the electric energy meter belongs, and longitude and latitude geographic position information of the electric energy meter, to the station concentrator through the electric energy meter communication module. The concentrator stores the received electric energy meter information, a distribution area topological graph is generated according to the received electric energy meter information, meanwhile, the concentrator sends the received electric energy meter information and the attribute information of the concentrator to the master station, and the master station generates an area topological graph according to the information sent by the concentrator. Preferably, all numbers within the same region are unique.
Optionally, in this embodiment, as shown in fig. 2, a power failure detection unit based on the following principle is disposed in the electric energy meter communication module:
and comparing the voltage acquired and converted by the electric energy meter from the bus with the constant voltage provided by the standby power supply, and if the voltage is lower than the constant voltage value, determining that a power failure fault occurs.
Or the electric energy meter communication module is associated with a newly arranged Microcontroller (MCU) to acquire the power failure fault, or the original microcontroller in the electric energy meter communication module is utilized to acquire the power failure fault, the microcontroller detects the voltage value acquired and converted from the bus of the electric energy meter in real time, and if the detected voltage value exceeds a set value by a specified value or is detected to be a set level, the electric energy meter communication module is regarded as having the power failure fault.
Example 2
Referring to fig. 2, corresponding to the above method embodiments, the present embodiment discloses a system for quickly responding to a power failure fault of a low-voltage power grid subscriber line, including:
the electric energy meter is used for sending electric energy meter information to a concentrator of the transformer area by using a built-in electric energy meter communication module after normal power supply so as to generate a transformer area topological graph; the electric energy meter communication module is also used for detecting whether a power failure fault occurs in real time or acquiring from the electric energy meter, generating power failure fault information by using the power supply of the standby power supply after the fault is detected, and sending the power failure fault information to the concentrator in a wired or wireless mode; the standby power supply only supplies power to the electric energy meter communication module, and the energy storage of the standby power supply at least meets the requirement that the electric energy meter communication module reports power failure fault information for one time.
And the concentrator is used for sending the electric energy meter information and the self attribute information to the master station together to generate a regional topological graph and sending the power failure fault information and the self attribute information to the master station.
And the master station is used for analyzing the power failure fault information forwarded by the corresponding concentrator, starting remote meter reading of the target electric energy meter in a wired or wireless mode according to the analysis result, confirming that the power failure fault information is effective if normal meter reading is unavailable, and starting a corresponding rush-repair process.
Optionally, the backup power source of the system is a super capacitor or other energy storage element with high energy density connected with the electric energy meter communication module. Preferably, a positioning device is arranged in the electric energy meter communication module to provide the power failure fault information and the positioning information required by the electric energy meter information.
Optionally, a power failure detection unit based on the following principle is arranged in the electric energy meter communication module:
and comparing the voltage acquired and converted by the electric energy meter from the bus with the constant voltage provided by the standby power supply, and if the voltage is lower than the constant voltage value, determining that a power failure fault occurs.
Or the electric energy meter communication module is associated with a newly-arranged microcontroller to acquire the power-down fault, or an original microcontroller in the electric energy meter communication module is utilized to acquire the power-down fault, the microcontroller detects the voltage value acquired by the electric energy meter from the bus in real time and converts the voltage value, and if the detected voltage value exceeds a set value by a specified value or is detected to be a certain set level, the electric energy meter communication module is regarded as having the power-down fault.
Optionally, the power failure fault information received by the master station includes a concentrator number, concentrator longitude and latitude geographical position information, a phase line number to which the electric energy meter belongs, a meter box number to which the electric energy meter belongs, an electric energy meter number, and longitude and latitude geographical position information of the electric energy meter; and determining the analyzed and extracted electric energy meter number as a target electric energy meter for reading in a wired or wireless mode to confirm whether the power failure fault information is valid.
In summary, the method and system for fast responding to the power-down fault of the low-voltage power grid subscriber line disclosed by the invention send power-down fault information and electric energy meter information to the concentrator through the electric energy meter and the electric energy meter communication module, the concentrator forwards the power-down fault information to the master station, then the master station analyzes the power-down fault information forwarded by the corresponding concentrator, and starts meter reading of a target electric energy meter in a wired (power line carrier, RS485 and the like) or wireless mode according to an analysis result, if the meter reading cannot be normally performed, the power-down fault information is confirmed to be effective, and a corresponding rush-repair process is started. The invention can quickly respond to the power failure fault of the low-voltage power grid user line, improve the operation and maintenance efficiency and improve the service level.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A quick response method for a power failure fault of a low-voltage power grid user line is characterized by comprising the following steps:
after the electric energy meter is normally powered, sending electric energy meter information to a concentrator of the transformer area by utilizing a built-in electric energy meter communication module to generate a transformer area topological graph; after receiving the electric energy meter information, the concentrator sends the electric energy meter information and the attribute information thereof to the master station together to generate a regional topological graph;
the electric energy meter communication module detects in real time or acquires whether a power failure fault occurs from the electric energy meter, generates power failure fault information by using the power supply of the standby power supply after the fault is detected, and sends the power failure fault information to the concentrator in a wired or wireless mode;
the concentrator sends the power failure fault information and the attribute information of the concentrator to a master station; the power failure fault information received by the master station comprises a concentrator number, longitude and latitude geographical position information of the concentrator, a phase line number of an electric energy meter, a meter box number of the electric energy meter, an electric energy meter number and longitude and latitude geographical position information of the electric energy meter;
the master station analyzes the power failure fault information forwarded by the corresponding concentrator, determines the analyzed and extracted electric energy meter number as a target electric energy meter which is read in a wired or wireless mode to confirm whether the power failure fault information is valid, starts remote reading of the target electric energy meter, confirms that the power failure fault information is valid if normal reading cannot be performed, and starts a corresponding emergency repair process;
the standby power supply only supplies power to the electric energy meter communication module, and the energy storage of the standby power supply at least meets the requirement that the electric energy meter communication module reports power failure fault information for one time.
2. The low-voltage power grid user line power failure fault rapid response method as claimed in claim 1, wherein the backup power source is a super capacitor or other energy storage element with high energy density connected with a communication module of an electric energy meter; and/or
And arranging a positioning device in the electric energy meter communication module to provide the power failure fault information and positioning information required by the electric energy meter information.
3. The low-voltage power grid user line power failure fault rapid response method according to claim 1 or 2, characterized in that a power failure detection unit based on the following principle is arranged in the electric energy meter communication module:
comparing the voltage acquired and converted by the electric energy meter from the bus with the constant voltage provided by the standby power supply, and if the voltage is lower than the constant voltage value, determining that a power failure fault occurs; or
The electric energy meter communication module is associated with a newly-arranged microcontroller to acquire the power failure fault, or an original microcontroller in the electric energy meter communication module is utilized to acquire the power failure fault, the microcontroller detects the voltage value acquired and converted from the bus of the electric energy meter in real time, and if the detected voltage value exceeds a set value by a specified value or is detected to be a certain set level, the electric energy meter communication module is regarded as the power failure fault.
4. A low voltage electric network user line power failure fault rapid response system is characterized by comprising:
the electric energy meter is used for sending electric energy meter information to a concentrator of the transformer area by using a built-in electric energy meter communication module after normal power supply so as to generate a transformer area topological graph; the electric energy meter communication module is also used for detecting whether a power failure fault occurs in real time or acquiring from the electric energy meter, generating power failure fault information by using the power supply of the standby power supply after the fault is detected, and sending the power failure fault information to the concentrator in a wired or wireless mode; the standby power supply only supplies power to the electric energy meter communication module, and the energy storage of the standby power supply at least meets the requirement that the electric energy meter communication module reports power failure fault information for one time;
the concentrator is used for sending the information of the electric energy meter and the attribute information of the concentrator to a master station together to generate a regional topological graph and sending the power failure fault information and the attribute information of the concentrator to the master station; the power failure fault information received by the master station comprises a concentrator number, longitude and latitude geographical position information of the concentrator, a phase line number of an electric energy meter, a meter box number of the electric energy meter, an electric energy meter number and longitude and latitude geographical position information of the electric energy meter;
the master station is used for analyzing the power failure fault information forwarded by the corresponding concentrator, determining the analyzed and extracted electric energy meter number as a target electric energy meter which is read in a wired or wireless mode to confirm whether the power failure fault information is valid or not, starting remote meter reading in a wired or wireless mode on the target electric energy meter, and if the power failure fault information is valid, starting a corresponding rush-repair process.
5. The system for quickly responding to the power failure fault of the low-voltage power grid user line as claimed in claim 4, wherein the standby power supply is a super capacitor or other energy storage element with high energy density connected with the electric energy meter communication module; and/or
And a positioning device is arranged in the electric energy meter communication module to provide the power failure fault information and positioning information required by the electric energy meter information.
6. The system for quickly responding to the power failure fault of the low-voltage power grid user line according to claim 4 or 5, characterized in that a power failure detection unit based on the following principle is arranged in the electric energy meter communication module:
comparing the voltage acquired and converted by the electric energy meter from the bus with the constant voltage provided by the standby power supply, and if the voltage is lower than the constant voltage value, determining that a power failure fault occurs; or
The electric energy meter communication module is associated with a newly-arranged microcontroller to acquire the power failure fault, or an original microcontroller in the electric energy meter communication module is utilized to acquire the power failure fault, the microcontroller detects the voltage value acquired and converted from the bus of the electric energy meter in real time, and if the detected voltage value exceeds a set value by a specified value or is detected to be a certain set level, the electric energy meter communication module is regarded as the power failure fault.
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| CN108333400A (en) * | 2018-03-19 | 2018-07-27 | 秦峥 | A kind of intelligent metering case and its application |
| CN108519503A (en) * | 2018-05-03 | 2018-09-11 | 国网湖南省电力有限公司 | Intelligent electric energy meter based on NB-IOT communications |
| CN109378898B (en) | 2018-09-30 | 2022-06-17 | 国网天津市电力公司电力科学研究院 | Intelligent regulation and control system and method for distribution transformer area |
| CN109672271A (en) * | 2018-12-28 | 2019-04-23 | 北京智芯微电子科技有限公司 | The processing method of carrier wave expansion module and power-off event |
| CN110470875A (en) * | 2019-07-16 | 2019-11-19 | 国网浙江省电力有限公司电力科学研究院 | It is a kind of to realize the system and method for stopping powering on active reporting using Bluetooth technology |
| CN112615685B (en) * | 2020-11-24 | 2022-11-25 | 国网山东省电力公司郓城县供电公司 | Remote meter reading fault detection communication method and meter reading system |
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