CN110618379A - Disconnecting switch on-off state monitoring system and working method - Google Patents
Disconnecting switch on-off state monitoring system and working method Download PDFInfo
- Publication number
- CN110618379A CN110618379A CN201910723977.9A CN201910723977A CN110618379A CN 110618379 A CN110618379 A CN 110618379A CN 201910723977 A CN201910723977 A CN 201910723977A CN 110618379 A CN110618379 A CN 110618379A
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- China
- Prior art keywords
- isolating switch
- state
- processing unit
- switch
- monitoring system
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
-
- 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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Abstract
The invention relates to a monitoring system for the on-off state of an isolating switch and a working method, wherein the monitoring system for the on-off state of the isolating switch comprises: the device comprises a processing unit, an isolating switch on-off state detection unit and an isolating switch calibration mechanism, wherein the isolating switch on-off state detection unit is electrically connected with the processing unit; the disconnecting switch on-off state detection unit is suitable for detecting the position state information of the disconnecting switch in real time and sending the position state information to the processing unit; the processing unit is suitable for controlling the isolating switch calibration mechanism to calibrate the isolating switch according to the position state information of the isolating switch; according to the method, after the current attitude of the isolating switch is collected in real time, the on-off state of the isolating switch is judged, and the isolating switch is automatically calibrated, so that the static drift and dynamic accumulated errors of the traditional attitude sensor in the process of judging the on-off state of the isolating switch can be well overcome, and an accurate judgment basis is provided for realizing the intellectualization of the power grid.
Description
Technical Field
The invention relates to the field of intelligent attitude sensors for judging the on-off state of an isolating switch in a transformer substation with a voltage class of 35KV and above, in particular to an on-off state monitoring system of an isolating switch and a working method.
Background
At present, the success rate of one-time closing of the isolating switch is not 100%, and whether the closing of the isolating switch is successful or not directly influences the normal operation of a power grid system, even the personal safety of an operator is concerned, so that the closing state of the isolating switch needs to be confirmed, and the operation accident caused by the incomplete closing is avoided. In the prior art, whether the closing of the disconnecting switch is successfully monitored by a transformer substation is based on the single-dimensional information of the switching value of the auxiliary contact, and once a fault or a false alarm occurs, the state of the disconnecting switch cannot be correctly reflected. In addition, according to the technical guidance of the intelligent substation and the requirement of the automatic development trend of power grid dispatching, the switching operation of the unattended station needs to be remotely controlled. In order to ensure the correct and successful remote operation, whether the equipment is operated in place or not needs to be confirmed on the manual site, so that the operation time of the equipment is prolonged, the operation efficiency is reduced, unattended operation in the real sense is not reflected, and the development of intelligent control of a transformer substation is restricted.
At the present stage, each local electric power department uses a high-definition camera or a mobile robot to acquire the second-dimensional running state information of the disconnecting switch device at a test point, and intelligently processes image data through a background intelligent analysis host so as to support remote control of the transformer substation. The intelligent image analysis mode generally meets the requirement of remote operation and maintenance of the transformer substation, but the problem that the arrangement of the cameras is different due to different types of transformer substations and different manufacturer equipment, and the arrangement is greatly limited by the site still exists at the present stage; the number of cameras is large, the manufacturing cost is high, and the maintenance workload is large; extra measures are needed to ensure the image quality at night; the robot cost is high, and is higher to the orbit requirement, and the operation area is restricted by the place greatly.
Therefore, it is necessary to develop a new system for monitoring the on/off state of the disconnecting switch and a working method thereof to solve the above problems.
Disclosure of Invention
The invention aims to provide a system for monitoring the on-off state of an isolating switch and a working method.
In order to solve the technical problem, the invention provides a monitoring system for the on-off state of an isolating switch, which comprises: the device comprises a processing unit, an isolating switch on-off state detection unit and an isolating switch calibration mechanism, wherein the isolating switch on-off state detection unit is electrically connected with the processing unit; the disconnecting switch on-off state detection unit is suitable for detecting the position state information of the disconnecting switch in real time and sending the position state information to the processing unit; the processing unit is suitable for controlling the isolating switch calibration mechanism to calibrate the isolating switch according to the position state information of the isolating switch.
Further, the disconnecting switch on-off state detection unit includes: the gyroscope and the accelerometer are electrically connected with the processing unit; the gyroscope is suitable for acquiring the rotation angle information of a transmission shaft of the isolating switch; the accelerometer is suitable for acquiring acceleration information of a transmission shaft of the isolating switch; the processing unit is suitable for forming position state information according to the rotation angle information and the acceleration information so as to judge the on-off state of the isolating switch.
Furthermore, angle parameters and allowable deviation values corresponding to the on-off state of the isolating switch are preset in the processing unit respectively, the processing unit collects the pitch angle, the roll angle and the course angle of the isolating switch through the gyroscope, namely the motion state of the isolating switch is confirmed by judging the change data of the pitch angle, the roll angle and the course angle, and when the isolating switch is confirmed not to be in the motion state and has static drift, the processing unit is suitable for controlling the isolating switch calibration mechanism to calibrate the isolating switch.
Furthermore, a plurality of different calibration curves are preset in the processing unit, and when the isolating switch performs on-off action, the processing unit selects the most matched calibration curve according to the motion parameters of the isolating switch so as to control the isolating switch calibration mechanism to calibrate.
Further, isolator deciliter state monitoring system includes: the ferroelectric memory chip is electrically connected with the processing unit; the ferroelectric memory chip is suitable for data reading and writing.
Further, when the isolating switch is switched on and off, the processing unit carries out real-time high-speed memory on the current attitude of the isolating switch through the isolating switch on-off state detection unit and writes the attitude into the ferroelectric memory chip, namely, the ferroelectric memory chip carries out power-down memory on the course angle.
Further, the disconnecting switch on-off state monitoring system further comprises: the communication module is electrically connected with the processing unit; the processing unit is suitable for data transmission through the communication module.
On the other hand, the invention provides a working method of a disconnecting switch on-off state monitoring system, which comprises the following steps: collecting the current posture of the isolating switch, and judging the on-off state of the isolating switch; the isolating switch is automatically calibrated.
Further, the working method of the isolating switch on-off state monitoring system is suitable for working by adopting the isolating switch on-off state monitoring system.
The method has the advantages that after the current attitude of the isolating switch is collected in real time, the on-off state of the isolating switch is judged, and the isolating switch is automatically calibrated, so that the static drift and dynamic accumulated errors of the traditional attitude sensor when the on-off state of the isolating switch is judged can be well overcome, and an accurate judgment basis is provided for realizing the intellectualization of the power grid.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic block diagram of a disconnecting switch on-off state monitoring system of the present invention;
fig. 2 is a flow chart of a working method of the disconnecting switch on-off state monitoring system of the invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example 1
Fig. 1 is a schematic block diagram of a disconnecting switch on-off state monitoring system of the invention.
In this embodiment, as shown in fig. 1, this embodiment provides a monitoring system for the on-off state of a disconnecting switch, which includes: the device comprises a processing unit, an isolating switch on-off state detection unit and an isolating switch calibration mechanism, wherein the isolating switch on-off state detection unit is electrically connected with the processing unit; the disconnecting switch on-off state detection unit is suitable for detecting the position state information of the disconnecting switch in real time and sending the position state information to the processing unit; the processing unit is suitable for controlling the isolating switch calibration mechanism to calibrate the isolating switch according to the position state information of the isolating switch.
In this embodiment, the processing unit may be, but is not limited to, an STM32 series single chip microcomputer.
In this embodiment, after the current posture of the isolating switch is collected in real time, the on-off state of the isolating switch is judged, and the isolating switch is automatically calibrated, so that the static drift and the dynamic accumulated error of the traditional posture sensor in the process of judging the on-off state of the isolating switch can be well overcome, and an accurate judgment basis is provided for realizing the intellectualization of the power grid.
In order to judge the on-off state of the isolating switch, the on-off state detecting unit of the isolating switch comprises: the gyroscope and the accelerometer are electrically connected with the processing unit; the gyroscope is suitable for acquiring the rotation angle information of a transmission shaft of the isolating switch; the accelerometer is suitable for acquiring acceleration information of a transmission shaft of the isolating switch; the processing unit is suitable for forming position state information according to the rotation angle information and the acceleration information so as to judge the on-off state of the isolating switch.
In this embodiment, when the disconnector is in the on-off static state, and when the time of the static state exceeds the calibration time set by the processing unit, the calibration time may be set arbitrarily from several tens of seconds to several hours, and the processing unit marks the current position state information collected by the disconnector on-off state detection unit as the on-off state or the on-off state.
In order to automatically control the isolating switch calibration mechanism to calibrate the isolating switch, angle parameters corresponding to the on-off state of the isolating switch and an allowable deviation value are preset in the processing unit, the processing unit acquires a pitch angle, a roll angle and a course angle of the isolating switch through the gyroscope, namely the motion state of the isolating switch is confirmed by judging the change data of the pitch angle, the roll angle and the course angle, and when the isolating switch is not determined to be in the motion state and to generate static drift, the processing unit is suitable for controlling the isolating switch calibration mechanism to calibrate the isolating switch.
In order to realize the precise control and calibration of the isolating switch, a plurality of different calibration curves are preset in the processing unit, and when the isolating switch performs on-off action, the processing unit selects the most matched calibration curve to control the isolating switch calibration mechanism to calibrate according to the motion parameters of the isolating switch.
In order to solve the problem that the heading angle on the traditional attitude sensor automatically returns to zero, the monitoring system for the on-off state of the isolating switch comprises: the ferroelectric memory chip is electrically connected with the processing unit; the ferroelectric memory chip is suitable for data reading and writing.
In this embodiment, the ferroelectric memory chip can be, but is not limited to, an FM24C16B-GTR ferroelectric memory chip.
In this embodiment, when the disconnecting switch is in on-off operation, the current attitude needs to be memorized at a high speed in real time, so that a serious error caused by the fact that the heading angle returns to zero in the power failure is prevented, and the heading angle in the power failure needs to be memorized.
Specifically, when the isolating switch is switched on and off, the processing unit performs real-time high-speed memory on the current attitude of the isolating switch through the isolating switch on-off state detection unit, and writes the attitude into the ferroelectric memory chip, that is, performs power-down memory on the course angle through the ferroelectric memory chip.
In order to be convenient for updating and upgrading the equipment, the disconnecting switch on-off state monitoring system further comprises: the communication module is electrically connected with the processing unit; the processing unit is suitable for data transmission through the communication module.
In this embodiment, the communication module may be, but is not limited to, an RS485 data communication module.
In the embodiment, with the advance of the intellectualization of the national power grid, the open-type disconnecting switch and the disconnecting switch of the combined electrical appliance of a newly-built transformer substation with the voltage level of 35kV or above need to adopt the disconnecting switch on-off state monitoring system, 100% accurate judgment basis is provided for realizing the intellectualization of the power grid, the disconnecting switch generally runs all the year round after being put into operation, and even when the disconnecting switch works in an electrified way, data transmission is realized through the communication interface of the RS485 data communication module, so that the future requirements of the service of the intelligent power grid are met.
Example 2
Fig. 2 is a flow chart of a working method of the disconnecting switch on-off state monitoring system of the invention.
On the basis of embodiment 1, this embodiment provides an operating method of a disconnecting switch on-off state monitoring system, as shown in fig. 2, which includes: collecting the current posture of the isolating switch, and judging the on-off state of the isolating switch; the isolating switch is automatically calibrated.
Specifically, the working method of the disconnecting switch on-off state monitoring system is suitable for working by adopting the disconnecting switch on-off state monitoring system provided in embodiment 1.
In this embodiment, the disconnecting switch on-off state monitoring system has been described in the above embodiments.
In conclusion, after the current attitude of the isolating switch is collected in real time, the on-off state of the isolating switch is judged, and the isolating switch is automatically calibrated, so that the static drift and dynamic accumulated errors of the traditional attitude sensor in the process of judging the on-off state of the isolating switch can be well overcome, and an accurate judgment basis is provided for realizing the intellectualization of a power grid; static drift and dynamic accumulated errors are effectively overcome; supporting an automatic calibration function; the function of supporting data transmission and performing online upgrade is realized; directly outputting the on-off and on-off abnormal states of the isolating switch; the heading angle is memorized when the power is cut off, the condition that the isolating switch is suddenly powered off in the operation process is not afraid, and the problem that the electrical heading angle on the traditional attitude sensor automatically returns to zero is solved; the system has the capability of preventing misconnection, and the misconnection of the power line of the system and the RS485 signal line of the communication module can not cause partial function loss or device damage.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a isolator deciliter state monitoring system which characterized in that includes:
the device comprises a processing unit, an isolating switch on-off state detection unit and an isolating switch calibration mechanism, wherein the isolating switch on-off state detection unit is electrically connected with the processing unit; wherein
The disconnecting switch on-off state detection unit is suitable for detecting the position state information of the disconnecting switch in real time and sending the position state information to the processing unit;
the processing unit is suitable for controlling the isolating switch calibration mechanism to calibrate the isolating switch according to the position state information of the isolating switch.
2. The disconnecting switch on-off state monitoring system according to claim 1,
the disconnecting switch on-off state detection unit comprises: the gyroscope and the accelerometer are electrically connected with the processing unit;
the gyroscope is suitable for acquiring the rotation angle information of a transmission shaft of the isolating switch;
the accelerometer is suitable for acquiring acceleration information of a transmission shaft of the isolating switch;
the processing unit is suitable for forming position state information according to the rotation angle information and the acceleration information so as to judge the on-off state of the isolating switch.
3. The disconnecting switch on-off state monitoring system according to claim 2,
the angle parameters and the allowable deviation values corresponding to the on-off state of the isolating switch are preset in the processing unit respectively, and the processing unit acquires the pitch angle, the roll angle and the course angle of the isolating switch through the gyroscope, namely
The motion state of the isolating switch is confirmed by judging the change data of the pitch angle, the roll angle and the course angle, and when the isolating switch is confirmed not to be in the motion state and generate static drift, the processing unit is suitable for controlling the isolating switch calibration mechanism to calibrate the isolating switch.
4. The disconnecting switch on-off state monitoring system according to claim 1,
a plurality of different calibration curves are preset in the processing unit, and when the isolating switch performs on-off action, the processing unit selects the most matched calibration curve to control the isolating switch calibration mechanism to calibrate according to the motion parameters of the isolating switch.
5. The disconnecting switch on-off state monitoring system according to claim 1,
the isolating switch on-off state monitoring system comprises: the ferroelectric memory chip is electrically connected with the processing unit;
the ferroelectric memory chip is suitable for data reading and writing.
6. The disconnecting switch on-off state monitoring system according to claim 3 or 5,
when the isolating switch is switched on and off, the processing unit carries out real-time high-speed memory on the current attitude of the isolating switch through the isolating switch on-off state detection unit and writes the attitude into the ferroelectric memory chip, namely
And performing power-down memory on the course angle through the ferroelectric memory chip.
7. The disconnecting switch on-off state monitoring system according to claim 1,
the isolating switch on-off state monitoring system further comprises: the communication module is electrically connected with the processing unit;
the processing unit is suitable for data transmission through the communication module.
8. A working method of a disconnecting switch on-off state monitoring system is characterized by comprising the following steps:
collecting the current posture of the isolating switch, and judging the on-off state of the isolating switch;
the isolating switch is automatically calibrated.
9. The operating method of the disconnecting switch on-off state monitoring system according to claim 8,
the working method of the isolating switch on-off state monitoring system is suitable for working by adopting the isolating switch on-off state monitoring system according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910723977.9A CN110618379A (en) | 2019-08-07 | 2019-08-07 | Disconnecting switch on-off state monitoring system and working method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910723977.9A CN110618379A (en) | 2019-08-07 | 2019-08-07 | Disconnecting switch on-off state monitoring system and working method |
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| CN110618379A true CN110618379A (en) | 2019-12-27 |
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| CN201910723977.9A Pending CN110618379A (en) | 2019-08-07 | 2019-08-07 | Disconnecting switch on-off state monitoring system and working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618315A (en) * | 2019-09-10 | 2019-12-27 | 国营洛阳丹城无线电厂 | Method for modulating 4GHz1.5W high-frequency source input impedance by 50kHz |
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| CN108801141A (en) * | 2018-07-19 | 2018-11-13 | 国网上海市电力公司 | Ultra-high-voltage isolation switch intelligent regulator calibration system based on laser measuring technique |
| CN109143060A (en) * | 2018-10-22 | 2019-01-04 | 西安超鹏智能科技有限公司 | A kind of disconnecting switch location status monitoring system and its monitoring method |
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| US3836737A (en) * | 1973-07-16 | 1974-09-17 | Allis Chalmers | Positive blade rotation arrangement for disconnect switch |
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Application publication date: 20191227 |
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