CN110706434A - Man-machine interactive power transmission line fault monitoring and early warning system - Google Patents
Man-machine interactive power transmission line fault monitoring and early warning system Download PDFInfo
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- CN110706434A CN110706434A CN201911003149.4A CN201911003149A CN110706434A CN 110706434 A CN110706434 A CN 110706434A CN 201911003149 A CN201911003149 A CN 201911003149A CN 110706434 A CN110706434 A CN 110706434A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a man-machine interactive power transmission line fault monitoring and early warning system, which comprises a local unit, a power supply unit and an upper computer unit, wherein the local unit is used for monitoring and early warning the fault of a power transmission line; the local unit comprises a fault detection unit, a main control unit, a wireless transmission unit and a relay protection device, wherein the fault detection unit and the relay protection device are connected with the main control unit, and the main control unit is in communication connection with an upper computer unit through the wireless transmission unit; the power supply unit is connected with the local unit. The invention collects the electric quantity information and non-electric quantity information of the power transmission line through the fault detection unit, can quickly and accurately judge the state change of the power transmission line at the moment so as to make early warning and protection actions, and sends early warning information of permanent faults of the line to line operation and maintenance personnel through three categories of small probability, large probability and large probability by acquiring meteorological prediction information, the past state information of the power transmission line and the current state information through fuzzy algorithm processing, thereby facilitating maintenance.
Description
Technical Field
The invention relates to the technical field related to a power grid monitoring system, in particular to a human-computer interactive power transmission line fault monitoring and early warning system.
Background
In the life of modern society, the construction of national economy and the stable life of people are inseparable from the transmission of high-quality electric energy; in order to ensure that the power transmission line can safely, stably and efficiently operate, relay protection devices are arranged at two ends of the line; according to the classification of the operation modes of the power system, the faults of the power transmission line can be generally divided into two categories, namely transient faults caused by the fact that strong wind touches the line, birds, branches and other objects fall on the line and permanent faults caused by inversion and disconnection of a tower, when the relay protection device faces the transient faults generated by the line, the line can be restored to operate again after the line is cut off, but when the relay protection device faces the permanent faults, the switching-on function of the relay protection device can cause secondary damage to the power transmission line.
However, the existing method for inspecting the state of the power transmission line by manual inspection has the problems of low efficiency, high danger coefficient, low accuracy and the like; and the manual inspection mode can not combine the former power transmission line state information and the future meteorological condition, can not make preventive measures on line in time, and needs to be improved.
Disclosure of Invention
The invention aims to provide a man-machine interactive power transmission line fault monitoring and early warning system, which aims to solve the problems of low efficiency, high danger coefficient, low accuracy and the like of the existing method for inspecting the state of a power transmission line by adopting manual inspection in the background technology; and the manual inspection mode can not combine the former state information of the transmission line and the future meteorological conditions, and can not make preventive measures on line in time.
In order to achieve the purpose, the invention provides the following technical scheme: the man-machine interactive power transmission line fault monitoring and early warning system comprises a local unit, a power supply unit and an upper computer unit;
the local unit comprises a fault detection unit, a main control unit, a wireless transmission unit and a relay protection device, wherein the fault detection unit and the relay protection device are connected with the main control unit, and the main control unit is in communication connection with an upper computer unit through the wireless transmission unit;
the power supply unit is connected with the local unit;
the fault detection unit is connected to two ends of the line and a middle point of the line;
the relay protection device is connected to two ends of the line;
the power supply unit comprises a storage battery, induction energy-taking equipment and a direct-current double-current switch;
the upper computer unit comprises a PC, a three-color audible and visual alarm, a meteorological information prediction device and a voice conversion device.
Preferably, the fault detection unit comprises a current transformer, a voltage transformer, an inclination angle sensor, a gravity sensor, an arc sensor and a filtering module, wherein the current transformer, the voltage transformer, the inclination angle sensor, the gravity sensor and the arc sensor are all connected with the filtering module, and the output end of the filtering module is connected with the input end of the main control unit.
Preferably, the main control unit comprises a main control circuit, a memory 1 and a memory 2, wherein the memory 1 and the memory 2 are both connected with the main control circuit, and the main control circuit is in communication connection with the upper computer unit through the wireless transmission unit.
Preferably, the relay protection device comprises a switch control circuit and a reclosing device, the input end of the switch control circuit is connected with the output end of the main control circuit, and the reclosing device is connected with the switch control circuit.
Preferably, the reclosing device comprises a circuit breaker and a grounding knife switch, and the circuit breaker and the grounding knife switch are connected to two ends of a line in parallel.
Preferably, the storage battery and the induction energy-taking equipment are both connected with a direct-current double-current switch; and the direct current double-current switch is connected with the local unit.
Preferably, the induction energy-taking equipment comprises an energy-taking mutual inductor, a rectifying and filtering circuit, a charging and discharging management circuit and a protection circuit, wherein the energy-taking mutual inductor and the rectifying and filtering circuit are connected in series with the protection circuit; the storage battery is connected with the induction energy-taking equipment in parallel through the charging and discharging management circuit.
Preferably, the PC is connected with the main control circuit through a wireless transmission unit for communication, the input end of the three-color audible and visual alarm is connected with the output end of the PC, and the weather information prediction device and the voice conversion device are connected with the input end of the PC.
Preferably, the voice conversion device comprises a voice acquisition module, an interaction module, a database module and a data output module, and the voice acquisition module, the database module and the data output module are all connected with the interaction module.
Preferably, the interaction module comprises a voice filtering processing module, a keyword extraction module and a compiling module, and the output end of the voice acquisition module is connected with the input end of the voice filtering processing module; the input end of the keyword extraction module is connected with the output end of the voice filtering processing module; the input end of the database module is connected with the output end of the keyword extraction module, the output end of the database module is connected with the input end of the compiling module, and the output end of the compiling module is connected with the input end of the data output module.
The invention provides a man-machine interactive power transmission line fault monitoring and early warning system, which has the following beneficial effects:
(1) according to the invention, the electric quantity information and non-electric quantity information of the power transmission line are collected through the fault detection unit, and the state change of the power transmission line at the moment can be rapidly and accurately judged, so that early warning and protection actions are performed.
(2) According to the invention, the meteorological prediction information, the past state information and the current state information of the power transmission line are acquired and are divided into three categories of small probability, large probability and large probability through fuzzy algorithm processing, and early warning information of permanent fault generation of the line is sent to line operation and maintenance personnel, and the line operation and maintenance personnel can quickly and conveniently modify the protection strategy of the power transmission line according to the acquired early warning information.
(3) The power supply unit used by the invention can continuously and stably supply power without being influenced by weather conditions and supply power to the device system in emergency, thereby being convenient to use.
Drawings
FIG. 1 is a block diagram of the overall structure of the present invention;
FIG. 2 is a block diagram of a voice conversion apparatus according to the present invention;
FIG. 3 is a flow chart of human-computer interaction according to the present invention.
Detailed Description
The technical solution in 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.
As shown in fig. 1-3, the present invention provides a technical solution: the man-machine interactive power transmission line fault monitoring and early warning system comprises a local unit, a power supply unit and an upper computer unit, wherein the local unit comprises a fault detection unit, a main control unit, a wireless transmission unit and a relay protection device;
the fault detection unit comprises a current transformer, a voltage transformer, an inclination angle sensor, a gravity sensor, an arc sensor and a filtering module, and is connected to two ends of the line and the middle point of the line; the current transformer, the voltage transformer, the inclination angle sensor, the gravity sensor and the arc sensor collect electric quantity information and non-electric quantity information of the power transmission line and transmit the information to the filtering module, and the filtering module transmits the processed information quantity to the main control circuit.
The main control unit comprises a main control circuit, a memory 1 and a memory 2; the main control circuit is composed of stm32 series single-chip microcomputers, receives the line state information transmitted by the fault processing unit, judges whether a fault occurs at that time and the accurate type of the fault through a built-in program, sends the line state information to the memory 1 and the upper computer unit, and drives a relay protection unit to act according to a relay protection strategy in the built-in program to protect the power transmission line when the fault occurs;
the relay protection device comprises a switch control circuit and a reclosing device, wherein the switch control circuit can drive the reclosing device to act according to an action signal sent by the main control circuit;
the power supply unit comprises a storage battery, induction energy-taking equipment and a direct-current double-current switch; the induction energy taking equipment comprises an energy taking mutual inductor, a rectifying and filtering circuit, a charging and discharging management circuit and a protection circuit; the energy-taking mutual inductor generates alternating current on a secondary side by inducing alternating current on a power transmission line, and then converts the alternating current into direct current through the rectifying and filtering circuit to supply power to a local unit; the storage battery stores energy through a charge and discharge management circuit; when the induction energy-taking equipment fails and cannot normally supply power, the direct-current double-current switch can automatically switch to the storage battery for supplying power, so that the device system can be ensured to normally operate for a period of time;
the upper computer unit comprises a PC, a three-color audible and visual alarm, a meteorological information prediction device and a voice conversion device; the PC is connected with the main control unit through the wireless communication device, the state information quantity of the transmission line in the main control unit in the current and past transmission lines is called, the meteorological information obtained by the meteorological information prediction device is processed into three categories of small probability, large probability and maximum probability of permanent faults through fuzzy calculation, and the three-color audible and visual alarm gives an early warning to operation and maintenance personnel; operation and maintenance personnel can firstly use the voice conversion device to set a rough protection strategy according to different types of early warnings, then pertinently modify the protection strategy according to the current state information of the power transmission line through the PC, the modified control strategy is transmitted to the main control unit through the PC and the wireless transmission unit, and the main control unit receives the strategy into the memory 2 and updates the built-in control program.
In this example, as shown in fig. 2, the voice conversion apparatus includes a voice collecting module, an interaction module, a database module, and a data output module; the interactive module comprises a voice filtering processing module, a keyword extraction module and a compiling module; the voice filtering processing module filters the information in the voice acquisition module and then sends the information to the key word extraction module for information extraction, the extracted information is sent to the database module for comparison and search, a corresponding control strategy is obtained and then input to the compiling module, and the control strategy is input to the PC through the data output module;
as shown in fig. 3, the present invention provides a human-computer interaction method based on transmission line fault detection and early warning according to the above human-computer interaction type transmission line fault monitoring and early warning device system, including the following steps:
(1) the PC machine calls the current and past state information quantity and weather forecast information of the power transmission line;
(2) classifying the obtained information into three categories of small probability, large probability and maximum probability of permanent faults by fuzzy processing;
(3) according to different categories, alarming to operation and maintenance personnel through different sound colors;
(4) the operation and maintenance personnel select the protection strategy according to the type;
(5) rapidly formulating a rough protection strategy through a voice conversion device;
(6) performing targeted modification on the PC according to the state information of the power transmission line;
(7) wirelessly transmitting to the primary control unit for protection policy procedure update.
The invention carries out monitoring, early warning and line protection of the transmission line fault in a man-machine interaction mode, and realizes timely and accurate early warning of the transmission line fault, so that workers can quickly make effective preventive measures, the transmission line can run more safely, and economic loss caused by permanent faults is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The man-machine interactive power transmission line fault monitoring and early warning system is characterized by comprising a local unit, a power supply unit and an upper computer unit;
the local unit comprises a fault detection unit, a main control unit, a wireless transmission unit and a relay protection device, wherein the fault detection unit and the relay protection device are connected with the main control unit, and the main control unit is in communication connection with an upper computer unit through the wireless transmission unit;
the power supply unit is connected with the local unit;
the fault detection unit is connected to two ends of the line and a middle point of the line;
the relay protection device is connected to two ends of the line;
the power supply unit comprises a storage battery, induction energy-taking equipment and a direct-current double-current switch;
the upper computer unit comprises a PC, a three-color audible and visual alarm, a meteorological information prediction device and a voice conversion device.
2. The human-computer interactive power transmission line fault monitoring and early warning system of claim 1, wherein: the fault detection unit comprises a current transformer, a voltage transformer, an inclination angle sensor, a gravity sensor, an electric arc sensor and a filtering module, wherein the current transformer, the voltage transformer, the inclination angle sensor, the gravity sensor and the electric arc sensor are all connected with the filtering module, and the output end of the filtering module is connected with the input end of the main control unit.
3. The human-computer interactive power transmission line fault monitoring and early warning system of claim 1, wherein: the main control unit comprises a main control circuit, a memory 1 and a memory 2, wherein the memory 1 and the memory 2 are both connected with the main control circuit, and the main control circuit is in communication connection with the upper computer unit through the wireless transmission unit.
4. The human-computer interactive power transmission line fault monitoring and early warning system of claim 1, wherein: the relay protection device comprises a switch control circuit and a reclosing device, wherein the input end of the switch control circuit is connected with the output end of the main control circuit, and the reclosing device is connected with the switch control circuit.
5. The human-computer interactive power transmission line fault monitoring and early warning system of claim 1, wherein: the reclosing device comprises a breaker and a grounding disconnecting link, and the breaker and the grounding disconnecting link are connected to two ends of a line in parallel.
6. The human-computer interactive power transmission line fault monitoring and early warning system of claim 1, wherein: the storage battery and the induction energy-taking equipment are both connected with the direct-current double-current switch; and the direct current double-current switch is connected with the local unit.
7. The human-computer interactive power transmission line fault monitoring and early warning system of claim 6, wherein: the induction energy taking equipment comprises an energy taking mutual inductor, a rectifying and filtering circuit, a charging and discharging management circuit and a protection circuit, wherein the energy taking mutual inductor, the rectifying and filtering circuit and the protection circuit are connected in series; the storage battery is connected with the induction energy-taking equipment in parallel through the charging and discharging management circuit.
8. The human-computer interactive power transmission line fault monitoring and early warning system of claim 1, wherein: the PC is connected with the main control circuit through the wireless transmission unit in a communication mode, the input end of the three-color audible and visual alarm is connected with the output end of the PC, and the meteorological information prediction device and the voice conversion device are connected with the input end of the PC.
9. The human-computer interactive power transmission line fault monitoring and early warning system of claim 8, wherein: the voice conversion device comprises a voice acquisition module, an interaction module, a database module and a data output module, wherein the voice acquisition module, the database module and the data output module are all connected with the interaction module.
10. The human-computer interactive power transmission line fault monitoring and early warning system of claim 9, wherein: the interactive module comprises a voice filtering processing module, a keyword extraction module and a compiling module, wherein the output end of the voice acquisition module is connected with the input end of the voice filtering processing module; the input end of the keyword extraction module is connected with the output end of the voice filtering processing module; the input end of the database module is connected with the output end of the keyword extraction module, the output end of the database module is connected with the input end of the compiling module, and the output end of the compiling module is connected with the input end of the data output module.
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Application publication date: 20200117 |