CN111090271A - 35kv-10kv switch cabinet fault pre-diagnosis system and method thereof - Google Patents
35kv-10kv switch cabinet fault pre-diagnosis system and method thereof Download PDFInfo
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- CN111090271A CN111090271A CN201910655038.5A CN201910655038A CN111090271A CN 111090271 A CN111090271 A CN 111090271A CN 201910655038 A CN201910655038 A CN 201910655038A CN 111090271 A CN111090271 A CN 111090271A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The invention provides a 35kv-10kv switch cabinet fault pre-diagnosis system and a method thereof, wherein the method comprises the following steps: the temperature sensor is set at the appointed monitoring point and used for detecting the temperature of the appointed monitoring point and transmitting the temperature information and the address information of each monitoring point to the background controller; the sound sensors are arranged in the cable chambers of the switch cabinets, collect sound signals in the cable chambers of the switch cabinets and transmit the sound signals and corresponding address information to the background controller; the humidity sensor is arranged in each KYN instrument room and used for detecting the humidity of the appointed monitoring point and transmitting the humidity information and the address information of each monitoring point to the background controller; the leakage current sensor is used for detecting leakage current generated by a voltage transformer or a transformer used in the secondary circuit and transmitting leakage current information and address information corresponding to the leakage current information to the background controller; and the background controller is used for receiving the information, judging the type and the position of the generated fault risk according to the information and simultaneously sending out early warning information.
Description
Technical Field
The invention relates to the technical field of power protection, in particular to a 35kv-10kv switch cabinet fault pre-diagnosis system and a method thereof.
Background
A large number of 35KV-10KV switch cabinets are operated in industrial parks, mines, oil fields, residential areas, commercial centers, public places, airport terminals, subways, schools and the like. And if the equipment fails in operation, the operation and maintenance department repairs the equipment in an emergency. Faults can occur at any time, and uncertainty of fault time brings great difficulty and passivity to operation and maintenance work, which is the same at home and abroad currently. Because the 35KV-10KV switch cabinet is generally positioned in an area with inconvenient traffic, actions of rush repair personnel can still lag even after the system gives an alarm, and loss caused by faults is difficult to recover after the rush repair personnel arrive at the site, so that a pre-alarm system is urgently needed in the market and can respond to the faults of the switch cabinet in advance.
Disclosure of Invention
The invention aims to provide a 35-10 kv switch cabinet fault pre-diagnosis system and a method thereof aiming at the defects of the prior art, which can find the fault of the switch cabinet in advance, prompt the operator on duty and facilitate the fault elimination in advance.
The invention provides a 35kv-10kv switch cabinet fault pre-diagnosis system, which is characterized in that: it includes: the temperature sensor is set at the appointed monitoring point and used for detecting the temperature of the appointed monitoring point and transmitting the temperature information and the address information of each monitoring point to the background controller; the sound sensors are arranged in the cable chambers of the switch cabinets, collect sound signals in the cable chambers of the switch cabinets and transmit the sound signals and corresponding address information to the background controller; the humidity sensor is arranged at the appointed monitoring point and used for detecting the humidity of the appointed monitoring point and transmitting the humidity information and the address information of each monitoring point to the background controller; the leakage current sensor is connected with the secondary loop power supply in series and used for detecting leakage current generated by a voltage transformer or a transformer used in the secondary loop and transmitting leakage current information and address information corresponding to the leakage current information to the background controller; and the background controller is used for receiving the temperature information, the sound information, the humidity information, the leakage current information and the address information, judging the type and the position of the generated fault risk according to the received information and simultaneously sending out early warning information.
In the technical scheme, the intelligent monitoring system further comprises a collector, wherein the collector is arranged in each switch cabinet instrument room and is used for receiving temperature, sound, humidity, ambient temperature, leakage current information and corresponding address information which are respectively sent by a temperature sensor, a sound sensor, a humidity sensor and a leakage current sensor in the switch cabinet instrument room, and various collected data are cached in a memory in the collector; and after receiving a communication command of the background controller, sending the address information of each sensor and the corresponding temperature, sound, humidity, ambient temperature and leakage current information to the background controller.
In the technical scheme, the intelligent protection device further comprises a microcomputer protector, wherein the microcomputer protector is arranged on an instrument door of the switch cabinet with the high-voltage circuit breaker and can acquire and display a three-phase current value, a three-phase voltage value and a circuit breaker state and also can protect the circuit breaker; the received three-phase current value, the three-phase voltage value, the state of the circuit breaker and corresponding address information can be displayed before background control.
In the technical scheme, a temperature sensor is arranged on each temperature monitoring point, and temperature data is transmitted to a collector in a wireless or wired mode through a communication interface after the temperature is measured; the monitoring points comprise a lap joint of a switch cabinet incoming busbar and a switch, a lap joint of the switch and an outgoing busbar and a lap joint of an outgoing cable; each temperature sensor has a unique serial number, and the installation place of each temperature sensor needs to be recorded during actual installation and use, and the serial numbers and the installation place are stored in a database of the background controller to serve as address information of the temperature sensors.
The diagnosis method based on the 35kv-10kv switch cabinet fault pre-diagnosis system is characterized by comprising the following steps of:
a. the temperature sensor collects temperature information of a designated monitoring point in real time, and transmits the temperature information collected by the temperature sensor and address information corresponding to the temperature information to the background controller;
b. the humidity sensor collects humidity information of a specified monitoring point in real time, and transmits the humidity information collected by the humidity sensor and address information corresponding to the humidity information to the background controller;
c. the method comprises the following steps that a sound sensor collects sound information of a designated monitoring point in real time, and transmits audio information collected by the sound sensor and address information corresponding to the audio information to a background controller;
d. the leakage current sensor collects current information of a specified monitoring point in real time, and transmits a current signal collected by the leakage current sensor and corresponding address information to the background controller;
e. and the background controller is used for judging the type and the position of a fault which possibly occurs according to the temperature information, the sound information, the humidity information, the leakage current information and the address information and sending out early warning.
In the technical scheme, the background controller monitors that the temperature detected by the temperature sensors positioned at the incoming line and the outgoing line of the circuit breaker exceeds 60K, and if the current of the circuit breaker is close to a rated value, the background controller gives an alarm to indicate that the circuit breaker is overloaded; the background controller alarms that the contact is poor when the current of the circuit breaker is less than the rated current;
the background controller monitors that the temperature detected by the temperature sensor positioned at the cable contact exceeds 60K, and if the current of the cable is greater than the current-carrying capacity of the cable, the background controller alarms that the cable is overloaded; if the current of the cable is smaller than the current-carrying capacity of the cable, the background controller gives an alarm that the contact is poor;
the background controller monitors that the temperature detected by the temperature sensor at the PT exceeds 60K, and the background controller alarms that the PT has a fire risk.
According to the technical scheme, the background controller monitors that the humidity acquired by the humidity sensing degree of a certain monitoring point exceeds 90, the background controller displays the address information and the humidity information of the monitoring point through the display screen and sends out early warning, and the displayed risk is that the humidity exceeds the standard.
In the technical scheme, the background controller monitors that the sound collected by the sound sensitivity of a certain monitoring point is compared with a normal value in a database and exceeds a preset decibel number during normal work, the background controller displays the address information and the sound information of the monitoring point through the display screen and gives an early warning, and the displayed risk is abnormal sound.
In the technical scheme, the background controller monitors that the leakage current value acquired by the leakage current sensor of a certain monitoring point exceeds 30mA, displays the address information and the current information of the monitoring point through the display screen and sends out early warning to display that a secondary circuit needs to be manually concerned; the background controller monitors that the leakage current value acquired by the leakage current sensor of a certain monitoring point exceeds 300mmA, the background controller displays the address information and the current information of the monitoring point through the display screen and gives out early warning, the secondary circuit is controlled to trip to ensure that the secondary circuit cannot burn, and the alarm is for the risk of fire.
In the technical scheme, each address information in the background controller is correspondingly provided with the designated contact person, and when any address information has an early warning condition, the background controller can inform the designated contact person corresponding to the address information in a manner of dialing a telephone or sending a short message.
The invention not only can realize the functions, but also can realize the pre-diagnosis of the power equipment, and the monitored element can give an alarm before burning; the alarm is given before the insulation capacity of PT in KYN is reduced; an alarm is given before the circuit breaker trips; a part of joints with poor contact can give an alarm; the temperature of the monitored point exceeds the standard, and an alarm can be given, so that the power equipment is found in advance before the fault is realized. The invention changes the passive situations of failure, tripping, burning out and repair, and can eliminate a plurality of failures in the bud. In the invention, after a 35KV-10KV power distribution room is built, the switch cabinet starts to normally operate, and operation and maintenance personnel can find the fault of the switch cabinet in advance through remote monitoring before the power distribution equipment trips; before part of elements are burnt, before cable overload, before CT accidents and when the current transformer is in an abnormal working interval, abnormal sound exists in the power equipment, part of connection points are loosened, parameters before equipment failure are sent to a background or a computer control screen through a large number of sensors, and video and audio prompts are sent to an operator on duty, so that the failure can be removed in advance.
Drawings
FIG. 1 is a schematic view of the present invention;
fig. 2 is a schematic diagram b of the present invention.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in fig. 1, the present invention provides a 35kv-10kv switch cabinet fault pre-diagnosis system, which comprises: the temperature sensor is set at the appointed monitoring point and used for detecting the temperature of the appointed monitoring point and transmitting the temperature information and the address information of each monitoring point to the background controller; the sound sensors are arranged in the cable chambers of the switch cabinets, collect sound signals in the cable chambers of the switch cabinets and transmit the sound signals and corresponding address information to the background controller; the humidity sensor is arranged in a KYN cabinet instrument room and used for detecting the humidity of the specified monitoring points and transmitting the humidity information and the address information of each monitoring point to the background controller; the leakage current sensor is connected with the secondary loop power supply in series and used for detecting leakage current generated by a voltage transformer or a transformer used in the secondary loop and transmitting leakage current information and address information corresponding to the leakage current information to the background controller; and the background controller is used for receiving the temperature information, the sound information, the humidity information, the leakage current information and the address information, judging the type and the position of the generated fault risk according to the received information and simultaneously sending out early warning information.
The technical scheme also comprises a collector, the model of which is-JBCJ, the collector is arranged in each switch cabinet instrument room and is used for receiving temperature, sound, humidity, ambient temperature, leakage current information and corresponding address information which are respectively sent by a temperature sensor, a sound sensor, a humidity sensor and a leakage current sensor in the switch cabinet instrument room, and various collected data are cached in a memory in the collector; after receiving a communication command of the background controller, address information of each sensor and corresponding temperature, sound, humidity, ambient temperature and leakage current information are sent to the gateway, the gateway comprehensively processes signals through a GPRS or GSM by the communication processor and then sends the signals to the background controller, and a control screen of the background controller displays fault positions and fault conditions.
In the technical scheme, the intelligent switch cabinet further comprises a microcomputer protector, wherein the microcomputer protector is arranged on an instrument door of the switch cabinet with the high-voltage circuit breaker, can acquire and display a three-phase current value, a three-phase voltage value and a circuit breaker state, and can also protect the circuit breaker; the received three-phase current value, the three-phase voltage value, the state of the circuit breaker and corresponding address information can be displayed before background control.
In the technical scheme, a temperature sensor is arranged on each temperature monitoring point, and temperature data is transmitted to a collector in a wired or wireless mode through a communication interface after the temperature is measured; the monitoring points comprise a lap joint of a switch cabinet incoming busbar and a switch, a lap joint of the switch and an outgoing busbar and a lap joint of an outgoing cable; each temperature sensor has a unique serial number, and the installation place of each temperature sensor needs to be recorded during actual installation and use, and the serial numbers and the installation place are stored in a database of the background controller to serve as address information of the temperature sensors.
The sensor inside the cubical switchboard passes through the collector or transmits the signal transmission who gathers to the gateway through the wired or wireless communication port of self, the gateway passes through GPRS or GSM with the information that each sensor collected and its corresponding address information and transmits to the background controller, the background controller judges trouble risk and position and sends early warning signal according to above-mentioned information, and analyze that above-mentioned content passes through GPRS or GSM and transmits to the electric power dispatching room with the background controller, operating personnel accessible electric power dispatching room's display screen observes the operating condition of cubical switchboard, if produce the trouble risk, can receive early warning signal in the electric power dispatching room, maintainer knows trouble risk type and position according to early warning signal content, in time go to this place, guarantee to accomplish before the trouble takes place and overhaul, avoid causing the loss.
As shown in fig. 2, the cloud platform can be used to build a total database, and a total dispatching room is built in the electric power company for commanding; the display screen may be set up in a county-level dispatch room for conducting maintenance.
Each switch cabinet is internally provided with various sensors and a microcomputer comprehensive protector, the sensor of each switch cabinet is provided with address information of the switch cabinet, and each sensor transmits the collected data and the address information to the gateway together; each gateway can simultaneously receive signals from a plurality of switch cabinets and feed back received data to the switching station. The background controllers are arranged in each switching station, the background controllers of the switching stations analyze to obtain a conclusion and upload the conclusion to the cloud platform, and the backstage of the superior unit is only used for reading the uploaded content and is not used for analyzing the specific data content. The cloud background can be arranged in each provincial unit and can also be arranged in a local bureau unit; it may be provided in a higher-order unit. The display screen can be assigned to be on duty by the appointed place of each unit.
The invention also comprises a diagnosis method of the 35kv-10kv switch cabinet fault pre-diagnosis system, which is characterized by comprising the following steps:
a. the temperature sensor collects temperature information of a designated monitoring point in real time, and transmits the temperature information collected by the temperature sensor and address information corresponding to the temperature information to the background controller;
b. the humidity sensor collects humidity information of a specified monitoring point in real time, and transmits the humidity information collected by the humidity sensor and address information corresponding to the humidity information to the background controller;
c. the method comprises the following steps that a sound sensor collects sound information of a designated monitoring point in real time, and transmits audio information collected by the sound sensor and address information corresponding to the audio information to a background controller;
d. the leakage current sensor collects current information of a specified monitoring point in real time, and transmits a current signal collected by the leakage current sensor and corresponding address information to the background controller;
e. and the background controller is used for judging the type and the position of a fault which possibly occurs according to the temperature information, the sound information, the humidity information, the leakage current information and the address information and sending out early warning.
In the technical scheme, the background controller monitors that the temperature detected by the temperature sensors positioned at the incoming line and the outgoing line of the circuit breaker exceeds 60K, and if the current of the circuit breaker is close to a rated value, the background controller gives an alarm to indicate that the circuit breaker is overloaded; the background controller alarms that the contact is poor when the current of the circuit breaker is less than the rated current;
the background controller monitors that the temperature detected by the temperature sensor positioned at the cable contact exceeds 60K, and if the current of the cable is greater than the current-carrying capacity of the cable, the background controller alarms that the cable is overloaded; if the current of the cable is smaller than the current-carrying capacity of the cable, the background controller gives an alarm that the contact is poor;
the background controller monitors that the temperature detected by the temperature sensor at the PT exceeds 60K, and the background controller alarms that the PT has a fire risk.
According to the technical scheme, the background controller monitors that the humidity acquired by the humidity sensing degree of a certain monitoring point exceeds 90, the background controller displays the address information and the humidity information of the monitoring point through the display screen and sends out early warning, and the displayed risk is that the humidity exceeds the standard.
In the technical scheme, the background controller monitors that the sound collected by the sound sensitivity of a certain monitoring point is compared with a normal value in a database and exceeds a preset decibel number during normal work, the background controller displays the address information and the sound information of the monitoring point through the display screen and gives an early warning, and the displayed risk is abnormal sound.
In the technical scheme, the background controller monitors that the leakage current value acquired by the leakage current sensor of a certain monitoring point exceeds 30mA, displays the address information and the current information of the monitoring point through the display screen and sends out early warning to display that a secondary circuit needs to be manually concerned; the background controller monitors that the leakage current value acquired by the leakage current sensor of a certain monitoring point exceeds 300mmA, the background controller displays the address information and the current information of the monitoring point through the display screen and gives out early warning, the secondary circuit is controlled to trip to ensure that the secondary circuit cannot burn, and the alarm is for the risk of fire.
In the technical scheme, each address information in the background controller is correspondingly provided with the designated contact person, and when any address information has an early warning condition, the background controller can inform the designated contact person corresponding to the address information in a manner of dialing a telephone or sending a short message.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (10)
1. A35 kv-10kv switch cabinet fault pre-diagnosis system is characterized in that: it includes: the temperature sensor is set at the appointed monitoring point and used for detecting the temperature of the appointed monitoring point and transmitting the temperature information and the address information of each monitoring point to the background controller; the sound sensors are arranged in the cable chambers of the switch cabinets, collect sound signals in the cable chambers of the switch cabinets and transmit the sound signals and corresponding address information to the background controller; the humidity sensor is arranged in the instrument room and used for detecting the humidity of the appointed monitoring points and transmitting the humidity information and the address information of each monitoring point to the background controller; the leakage current sensor is connected with the secondary loop power supply in series and used for detecting leakage current generated by a voltage transformer or a transformer used in the secondary loop and transmitting leakage current information and address information corresponding to the leakage current information to the background controller; and the background controller is used for receiving the temperature information, the sound information, the humidity information, the leakage current information and the address information, judging the type and the position of the generated fault risk according to the received information and simultaneously sending out early warning information.
2. The 35kv-10kv switchgear fault pre-diagnosis system according to claim 1, wherein: the system comprises a plurality of switch cabinets, a plurality of collectors and a storage device, wherein each collector is arranged in each switch cabinet instrument room and is used for receiving temperature, sound, humidity, ambient temperature, leakage current information and corresponding address information which are respectively sent by an internal temperature sensor, a sound sensor, a humidity sensor and a leakage current sensor of the switch cabinet, and various collected data are cached in the storage device in the collector; and after receiving a communication command of the background controller, sending the address information of each sensor and the corresponding temperature, sound, humidity, ambient temperature and leakage current information to the background controller.
3. The system for pre-diagnosing the fault of the 35kv-10kv switch cabinet according to claim 2, characterized by further comprising a microcomputer protector which is arranged on an instrument door of the switch cabinet with a high-voltage circuit breaker and can acquire and display a three-phase current value and a three-phase voltage value and also protect the circuit breaker, wherein the microcomputer protector transmits the three-phase current value, the three-phase voltage value and address information of the corresponding switch cabinet to the background controller; the background controller can display the received three-phase current value, the three-phase voltage value, the state of the circuit breaker and corresponding address information.
4. The 35kv-10kv switchgear fault pre-diagnosis system of claim 2, wherein a temperature sensor is installed on each temperature monitoring point, and temperature data is transmitted to the collector in a wired or wireless manner through a communication interface after temperature measurement; the monitoring points comprise a lap joint of a switch cabinet incoming busbar and a switch, a lap joint of the switch and an outgoing busbar and a lap joint of an outgoing cable; each temperature sensor has a unique serial number, and the installation place of each temperature sensor needs to be recorded during actual installation and use, and the serial numbers and the installation place are stored in a database of the background controller to serve as address information of the temperature sensors.
5. A method of diagnosing a 35kv-10kv switchgear fault pre-diagnosis system according to claim 3, characterized by comprising the steps of:
a. the temperature sensor collects temperature information of a designated monitoring point in real time, and transmits the temperature information collected by the temperature sensor and address information corresponding to the temperature information to the background controller;
b. the humidity sensor collects humidity information of a specified monitoring point in real time, and transmits the humidity information collected by the humidity sensor and address information corresponding to the humidity information to the background controller;
c. the method comprises the following steps that a sound sensor collects sound information of a designated monitoring point in real time, and transmits audio information collected by the sound sensor and address information corresponding to the audio information to a background controller;
d. the leakage current sensor collects leakage current information of a specified monitoring point in real time, and transmits a current signal collected by the leakage current sensor and corresponding address information to the background controller;
e. and the background controller is used for judging the type and the position of a fault which possibly occurs according to the temperature information, the sound information, the humidity information, the leakage current information and the address information and sending out early warning.
6. The diagnosis method of the 35kv-10kv switch cabinet fault pre-diagnosis system of claim 5, wherein the background controller monitors that the temperature detected by the temperature sensors positioned at the incoming line and the outgoing line of the circuit breaker exceeds 60K, and alarms as overload if the current of the circuit breaker approaches a rated value; the background controller alarms that the contact is poor when the current of the circuit breaker is less than the rated current;
the background controller monitors that the temperature detected by the temperature sensor positioned at the cable contact exceeds 60K, and if the current of the cable is greater than the current-carrying capacity of the cable, the background controller alarms that the cable is overloaded; if the current of the cable is smaller than the current-carrying capacity of the cable, the background controller gives an alarm that the contact is poor;
the background controller monitors that the temperature detected by the temperature sensor at the PT exceeds 60K, and the background controller alarms that the PT has a fire risk.
7. The diagnosis method of the 35kv-10kv switch cabinet fault pre-diagnosis system according to claim 5, characterized in that the background controller monitors that the humidity acquired by the humidity sensing degree of a certain monitoring point exceeds 90, the background controller displays the address information and the humidity information of the monitoring point through a display screen and sends out an early warning, and the displayed risk is that the humidity exceeds the standard.
8. The diagnosis method of the 35kv-10kv switch cabinet fault pre-diagnosis system of claim 5, wherein the background controller monitors that the sound collected by the sound sensitivity of a certain monitoring point is compared with a normal value in the database and exceeds a preset decibel number in normal operation, the background controller displays the address information and the sound information of the monitoring point through a display screen and gives an early warning, and the displayed risk is that the sound is abnormal.
9. The diagnosis method of the 35kv-10kv switch cabinet fault pre-diagnosis system according to claim 5, characterized in that a background controller monitors that a leakage current value acquired by a leakage current sensor of a certain monitoring point exceeds 30mA, the background controller displays address information and current information of the monitoring point through a display screen and sends out an early warning to display that a secondary circuit needs to be manually attended; the background controller monitors that the leakage current value acquired by the leakage current sensor of a certain monitoring point exceeds 300mmA, the background controller displays the address information and the current information of the monitoring point through the display screen and gives out early warning, the secondary circuit is controlled to trip to ensure that the secondary circuit cannot burn, and the alarm is for the risk of fire.
10. The diagnosis method of the 35kv-10kv switch cabinet fault pre-diagnosis system according to claim 5, wherein each address information in the background controller is correspondingly provided with an appointed contact, and when any address information has an early warning condition, the background controller can inform the appointed contact corresponding to the address information in a manner of dialing a phone call or sending a short message.
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| CN201910655038.5A CN111090271A (en) | 2019-07-19 | 2019-07-19 | 35kv-10kv switch cabinet fault pre-diagnosis system and method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113281555A (en) * | 2021-05-31 | 2021-08-20 | 索奥斯(广东)玻璃技术股份有限公司 | Monitoring method and monitoring system for heating wire operation data |
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Application publication date: 20200501 |