CN114336974A - Monitoring method for isolating switch cabinet - Google Patents
Monitoring method for isolating switch cabinet Download PDFInfo
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- CN114336974A CN114336974A CN202210014060.3A CN202210014060A CN114336974A CN 114336974 A CN114336974 A CN 114336974A CN 202210014060 A CN202210014060 A CN 202210014060A CN 114336974 A CN114336974 A CN 114336974A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 230000036541 health Effects 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000007726 management method Methods 0.000 abstract description 7
- 238000010223 real-time analysis Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000004433 Simmondsia californica Nutrition 0.000 description 1
- 241000221096 Simmondsia chinensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
-
- 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
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
-
- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/128—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment involving the use of Internet protocol
Abstract
The invention discloses a monitoring method of an isolation switch cabinet, which comprises the following steps: s01, acquiring monitoring signal data in the isolating switch cabinet; s02, transmitting the monitoring signal data to a wave recording device; s03, the wave recording device uploads the monitoring signal data to a cloud terminal through a switch and a wireless router; s04, processing and analyzing the monitoring signal data by the cloud; and S05, the webpage end management system visually displays the processed and analyzed data and applies a related algorithm to statistically analyze the health condition of the isolating switch. The invention can realize the monitoring of the isolating switch and the real-time analysis of the health state of the isolating switch by acquiring the current signal, the voltage signal and the switching value signal, and has important significance for the normal operation of a subway power supply system.
Description
Technical Field
The invention relates to the technical field of substation disconnecting switch fault detection, in particular to a method for monitoring a disconnecting switch cabinet.
Background
The contact net isolation switch cabinet is important electrical equipment in a rail transit system, plays the operations of isolating a power supply, switching a line and switching back a brake so as to ensure the normal operation and safe maintenance of the line, and is switch equipment without an arc extinguishing function. Isolator in the isolator cabinet is by motor drive switch-on and separating brake, because electrical quantity shake such as motor current, voltage or unstable, can lead to isolator divide-shut brake contact failure or not in place for the current-carrying sectional area when isolator closes will be little, thereby causes overcurrent, overheated potential safety hazard, can burn isolator under the severe condition, causes the train operation accident.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a monitoring method for an isolation switch cabinet.
In order to achieve the purpose, the invention adopts the following technical scheme:
an isolation switch cabinet monitoring method comprises the following steps:
s01, acquiring monitoring signal data in the isolating switch cabinet;
s02, transmitting the monitoring signal data to a wave recording device;
s03, the wave recording device uploads the monitoring signal data to a cloud terminal through a switch and a wireless router;
s04, processing and analyzing the monitoring signal data by the cloud;
s05, the webpage end management system visually displays the processed and analyzed data and analyzes the health condition of the isolating switch;
the monitoring signal data in the step S01 includes a current signal, a voltage signal and a switching value signal;
the step S02 further includes: and transmitting the current signal and the voltage signal to an analog quantity opening point of the wave recording device, and transmitting a switching signal quantity to a switching quantity opening point of the wave recording device.
Further, the current signals include a motor current signal (KIE-6) and a control loop current signal (KIE-A2) in the isolation switch cabinet.
Further, the measuring device of the current signal is a hall sensor.
Further, the voltage signal comprises a voltage signal (X1-1) for monitoring the motor in the isolation switch cabinet and a voltage signal for controlling a power supply loop.
Further, the voltage signals of the control power supply loop comprise an external latching voltage signal (X1-15), a remote closing voltage signal (X1-8), a remote opening voltage signal (X1-6), a closing control contactor input voltage signal (KIE-A1) and an opening control contactor input voltage signal (KIA-A1).
Further, the method for acquiring the switching value signal data comprises the following steps: and an auxiliary switch-on/off contact of the isolating switch is connected to the isolating switch of the isolating switch cabinet, and switching value signal data is acquired through the auxiliary switch-on/off contact of the isolating switch.
Further, the switching value signal comprises a switching value I, a switching value II and a switching value III, wherein the switching value I is a voltage signal obtained through an auxiliary contact on an intermediate relay (J1); the switching value II is a switching value signal obtained through auxiliary contacts on the closing travel switch and the closing interlocking condition switches (KIA and SIE), and the switching value III is a switching value signal obtained through auxiliary contacts on the opening travel switch and the opening interlocking condition switches (KIE and SIA).
Further, the step S05 further includes:
monitoring a power curve of the motor: acquiring a motor power signal through a current signal and a voltage signal of the motor; acquiring a current curve, a voltage curve and a power curve of the motor from the current signal, the voltage signal and the power signal of the motor;
analyzing and judging whether the disconnecting switch is switched on in place: whether the disconnecting switch knife box is in place or not is obtained through common analysis and judgment of the power curve of the motor and the response time of the disconnecting switch box in the switching value I, the switching value II and the switching value III;
the cabinet internal isolation switch stroke state and the opening and closing relay contact state are as follows: monitoring key state quantity in the cabinet through switching value signal information, wherein the key state quantity in the cabinet comprises an isolating switch stroke state and a box opening and closing relay contact state;
external introduction of control and blocking signal quality analysis: by detecting the voltage of the auxiliary contact, the webpage end management system compares the change event of the auxiliary contact on the intermediate relay with the event recorded by an external control system, and further judges whether the switch does not operate and fails due to the fact that the contact does not operate or the external signal controls abnormally;
monitoring the characteristics of the opening and closing relay: by detection of a control loop current signal (KIE-A2);
electric energy quality analysis: and recording the voltage, the current and the switching value of each measurement in real time, and analyzing the waveform.
The invention has the beneficial effects that:
the invention can realize the functions of monitoring the power curve of the motor, analyzing and judging whether the isolation disconnecting link is switched on in place or not, monitoring the key state quantity in the cabinet, analyzing the quality of an externally-introduced control and locking signal, monitoring the characteristic of a switching-on and switching-off relay, analyzing the quality of electric energy and the like by acquiring a current signal, a voltage signal and a switching value signal, further realize the monitoring of the isolation switch and the real-time analysis of the health state of the isolation switch, and has important significance for the normal operation of a subway power supply system.
Drawings
FIG. 1 is a monitoring system structure diagram of the monitoring method of the isolation switch cabinet of the present invention;
fig. 2 is an electrical schematic diagram of the disconnector of the invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and the detailed description below:
the detection method of the embodiment is used for monitoring the isolation switch cabinet based on the detection system structure shown in the attached figure 1.
An isolation switch cabinet monitoring method comprises the following steps:
s01, acquiring monitoring signal data in the isolating switch cabinet;
the detection points for acquiring the detection signal are distributed based on the electrical schematic diagram of the delazel disconnector (as shown in fig. 2). KIE is a closing control contactor for controlling the main circuit of closing; KIA is a brake-separating control contactor for controlling a brake-separating main loop; m is a motor for driving the opening and closing; S1E is a switch-on travel switch, when the switch-on is in place, the 1-2 contact of the SIE is disconnected, and the switch-on loop loses power; the SIA is a switch-off travel switch, after the switch-off is finished, the 1-2 contact of the SIA is changed from closed to open, and the switch-off loop loses power.
The monitoring signal data in the step S01 includes a current signal, a voltage signal, and a switching value signal;
specifically, the current signals to be monitored include a motor current signal (KIE-6) and a control loop current signal (KIE-A2) in the isolation switch cabinet. Monitoring the motor current by measuring KIE-6 current; the control loop current is monitored by measuring current KIE-A2.
Specifically, the measuring device of the current signal is a hall sensor. The current of a closing coil when a motor in the electric isolating switch cabinet is started is monitored through a Hall sensor with small wire diameter and high precision. The Hall sensor in the current measurement adopts CHCS-ITH-20S of Jojoba sensing technology, Inc. in Jiangsu.
Specifically, the voltage signal to be monitored comprises a voltage signal (X1-1) of a motor in the isolation switch cabinet and a voltage signal of a control power supply loop. The voltage signal of the motor M is monitored by measuring the voltage signal at X1-1.
Specifically, the voltage signals of the control power supply loop to be monitored comprise external blocking voltage signals (X1-15), namely voltage signals at the closing and opening blocking points are obtained by measuring the voltage at X1-15; the system comprises an SCADA signal, wherein the SCADA signal comprises a remote closing signal and a remote opening signal, a voltage signal of the remote closing is obtained by measuring the voltage at X1-8, and a voltage signal of the remote opening is obtained by measuring the voltage at X1-6; the method comprises the steps that input voltage signals of a closing control contactor and input voltage signals of an opening control contactor are measured at KIE-A1 to monitor input voltage of a closing control contactor KIE, and input voltage of an opening control contactor KIA is monitored by measuring voltage at KIA-A1.
Specifically, the method for acquiring the switching value signal data comprises the following steps: and an isolating switch opening and closing auxiliary contact of the isolating switch is connected to an isolating switch of the isolating switch cabinet, and switching value signal data is acquired through the isolating switch opening and closing auxiliary contact. The switching value signal data specifically refers to switching-off response time and switching-on response time of the switch, and actually required time from the moment when a switching-off command and a switching-on command are sent out in an actual remote or local place to the moment when an actual wave recording device receives a switching-on/off in-place signal fed back by the switching-on/off auxiliary contact of the switch.
Specifically, the switching value signal comprises a switching value I, a switching value II and a switching value III, wherein the switching value I is a voltage signal obtained through an auxiliary contact on an intermediate relay (J1); the switching value II is a switching value signal obtained through auxiliary contacts on the closing travel switch and the closing interlocking condition switches (KIA and SIE), and the switching value III is a switching value signal obtained through auxiliary contacts on the opening travel switch and the opening interlocking condition switches (KIE and SIA).
Through accessing the auxiliary contact of the disconnecting switch on-off switch, the voltage, current and power waveforms of the motor during starting can be judged on one hand, the other hand calculates the response time of the disconnecting switch on-off switch and whether the disconnecting switch on-off switch is in place, and the above data are finally subjected to statistical analysis and display through a management system at a webpage end, so that the health management of the disconnecting switch cabinet is finally realized, the workload of operators is reduced, and the safe operation of a train is guaranteed
S02, transmitting the monitoring signal data to a wave recording device;
step S02 further includes: and transmitting the current signal and the voltage signal to an analog quantity opening point of the wave recording device, and transmitting the switching signal quantity to a switching quantity opening point of the wave recording device. The wave recording device adopts TDR100 of Guangzhou white cloud electrical equipment GmbH.
S03, the wave recording device uploads monitoring signal data to a cloud terminal through the switch and the wireless router;
s04, processing and analyzing the monitoring signal data by the cloud;
s05, the webpage end management system visually displays the processed and analyzed data and applies a related algorithm to statistically analyze the health condition of the isolating switch;
specifically, step S05 further includes:
monitoring a power curve of the motor: acquiring a motor power signal through a current signal and a voltage signal of the motor; acquiring a current curve, a voltage curve and a power curve of the motor from the current signal, the voltage signal and the power signal of the motor;
analyzing and judging whether the disconnecting switch is switched on in place: whether the disconnecting switch knife box is in place or not is obtained through common analysis and judgment of the power curve of the motor and the response time of the disconnecting switch box in the switching value I, the switching value II and the switching value III;
the monitoring of the key state quantity in the cabinet comprises an isolating switch stroke state and a switching-on and switching-off relay contact state: the method is realized by monitoring the switching value information of the corresponding node; namely, the key state quantity in the cabinet is monitored through the switching value signal information, wherein the key state quantity in the cabinet comprises the stroke state of an isolating switch and the contact state of a box opening and closing relay;
external introduction of control and blocking signal quality analysis (blocking signal, scada control signal): by monitoring the voltage of the auxiliary contact, the webpage end management system compares the change event of the auxiliary contact on the intermediate relay with the event recorded by an external control system, and further judges whether the switch does not operate and fails due to the fact that the contact does not operate or the external signal controls abnormally; the contact actions can be recorded in an external control system through remote control, field manual operation and the like, the action data are quoted in a background, comparison and analysis can be carried out by combining the actual action situation of the field, and the effect is better.
Monitoring the characteristics of the opening and closing relay: by monitoring the current of the relay, i.e. by detection of the control loop current signal (KIE-A2);
electric energy quality analysis: and recording the voltage, the current and the switching value of each measurement in real time, and analyzing the waveform.
Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims of the present invention.
Claims (8)
1. A monitoring method for an isolation switch cabinet is characterized by comprising the following steps:
s01, acquiring monitoring signal data in the isolating switch cabinet;
s02, transmitting the monitoring signal data to a wave recording device;
s03, the wave recording device uploads the monitoring signal data to a cloud terminal through a switch and a wireless router;
s04, processing and analyzing the monitoring signal data by the cloud;
s05, the webpage end management system visually displays the processed and analyzed data and analyzes the health condition of the isolating switch;
the monitoring signal data in the step S01 includes a current signal, a voltage signal and a switching value signal;
the step S02 further includes: and transmitting the current signal and the voltage signal to an analog quantity opening point of the wave recording device, and transmitting a switching signal quantity to a switching quantity opening point of the wave recording device.
2. An isolator switchgear monitoring method as claimed in claim 1, wherein said current signals include a motor current signal (KIE-6) and a control loop current signal (KIE-A2) in said isolator switchgear.
3. The monitoring method for the isolating switch cabinet as claimed in claim 2, wherein the measuring device for the current signal is a hall sensor.
4. The method according to claim 1, wherein the voltage signal comprises a voltage signal (X1-1) for monitoring a motor in the switchgear and a voltage signal for controlling a power supply loop.
5. The monitoring method of the disconnecting switch cabinet according to claim 4, wherein the voltage signals of the control power supply loop comprise an external blocking voltage signal (X1-15), a remote closing voltage signal (X1-8), a remote opening voltage signal (X1-6), a closing control contactor input voltage signal (KIE-A1) and an opening control contactor input voltage signal (KIA-A1).
6. The monitoring method of the isolating switch cabinet according to claim 1, wherein the obtaining method of the switching value signal data comprises: and an auxiliary switch-on/off contact of the isolating switch is connected to the isolating switch of the isolating switch cabinet, and switching value signal data is acquired through the auxiliary switch-on/off contact of the isolating switch.
7. The monitoring method of the isolating switch cabinet as claimed in claim 6, wherein the switching value signal comprises a switching value I, a switching value II and a switching value III, wherein the switching value I is a voltage signal obtained through an auxiliary contact on an intermediate relay (J1); the switching value II is a switching value signal obtained through auxiliary contacts on the closing travel switch and the closing interlocking condition switches (KIA and SIE), and the switching value III is a switching value signal obtained through auxiliary contacts on the opening travel switch and the opening interlocking condition switches (KIE and SIA).
8. The monitoring method for the disconnecting switch cabinet according to claim 1, wherein the step S05 further comprises:
monitoring a power curve of the motor: acquiring a motor power signal through a current signal and a voltage signal of the motor; acquiring a current curve, a voltage curve and a power curve of the motor from the current signal, the voltage signal and the power signal of the motor;
analyzing and judging whether the disconnecting switch is switched on in place: whether the disconnecting switch knife box is in place or not is obtained through common analysis and judgment of the power curve of the motor and the response time of the disconnecting switch box in the switching value I, the switching value II and the switching value III;
the cabinet internal isolation switch stroke state and the opening and closing relay contact state are as follows: monitoring key state quantity in the cabinet through switching value signal information, wherein the key state quantity in the cabinet comprises an isolating switch stroke state and a box opening and closing relay contact state;
external introduction of control and blocking signal quality analysis: by detecting the voltage of the auxiliary contact, the webpage end management system compares the change event of the auxiliary contact on the intermediate relay with the event recorded by an external control system, and further judges whether the switch does not operate and fails due to the fact that the contact does not operate or the external signal controls abnormally;
monitoring the characteristics of the opening and closing relay: by detection of a control loop current signal (KIE-A2);
electric energy quality analysis: and recording the voltage, the current and the switching value of each measurement in real time, and analyzing the waveform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210014060.3A CN114336974A (en) | 2022-01-06 | 2022-01-06 | Monitoring method for isolating switch cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210014060.3A CN114336974A (en) | 2022-01-06 | 2022-01-06 | Monitoring method for isolating switch cabinet |
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| CN114336974A true CN114336974A (en) | 2022-04-12 |
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| CN202210014060.3A Pending CN114336974A (en) | 2022-01-06 | 2022-01-06 | Monitoring method for isolating switch cabinet |
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| AU2019434295A1 (en) * | 2019-03-11 | 2021-10-21 | Hitachi Energy Ltd | Sensor-based remote condition monitoring device and method for disconnector devices |
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2022
- 2022-01-06 CN CN202210014060.3A patent/CN114336974A/en active Pending
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| AU2019434295A1 (en) * | 2019-03-11 | 2021-10-21 | Hitachi Energy Ltd | Sensor-based remote condition monitoring device and method for disconnector devices |
| CN111157841A (en) * | 2019-12-25 | 2020-05-15 | 国网浙江省电力有限公司台州供电公司 | Fault quick positioning device for secondary circuit of electric operation type isolating switch |
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Application publication date: 20220412 |