CN110992656B - Substation box monitoring system - Google Patents
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- CN110992656B CN110992656B CN201911215528.XA CN201911215528A CN110992656B CN 110992656 B CN110992656 B CN 110992656B CN 201911215528 A CN201911215528 A CN 201911215528A CN 110992656 B CN110992656 B CN 110992656B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 93
- 238000012545 processing Methods 0.000 claims abstract description 101
- 238000012423 maintenance Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000012141 concentrate Substances 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims description 69
- 230000005540 biological transmission Effects 0.000 claims description 50
- 241001465754 Metazoa Species 0.000 claims description 36
- 230000005494 condensation Effects 0.000 claims description 21
- 238000009833 condensation Methods 0.000 claims description 21
- 230000002159 abnormal effect Effects 0.000 claims description 15
- 238000006073 displacement reaction Methods 0.000 claims description 14
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
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- 238000007789 sealing Methods 0.000 description 2
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- 238000001816 cooling Methods 0.000 description 1
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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
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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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Abstract
The invention provides a transformer substation box monitoring system which comprises a sensing part for collecting box internal information, a signal concentrator, a central processing module and an operation and maintenance terminal which is convenient for workers to monitor the running condition of the transformer substation box, wherein the sensing part transmits the collected box internal information to the signal concentrator, the signal concentrator concentrates the received box internal information and then transmits the collected box internal information to the central processing module for analysis and processing, and the central processing module analyzes and processes the box internal information and then transmits the box internal information to the operation and maintenance terminal. After the transformer substation box monitoring system provided by the invention is applied, the box door is not required to be opened in sequence for inspection, the running condition in the box can be directly monitored only through the operation and maintenance terminal, the operation and maintenance workload of staff is reduced, and the working efficiency of the staff and the control performance of equipment conditions in the box are improved.
Description
Technical Field
The invention relates to the technical field of substation box monitoring, in particular to a substation box monitoring system.
Background
Substation box monitoring is one of daily necessary work of substation staff, and the staff need open box cabinet door in proper order at monitoring in-process and inspect, and the content of substation box opening inspection mainly includes several aspects: 1. whether the box body is well sealed and whether water enters and wets; 2. whether small animals enter the box body or not; 3. and whether the terminal strip and the element wiring in the box are abnormal.
The transformer substation is internally provided with a large number of boxes such as a control cabinet, a terminal box, a switch mechanism box, a disconnecting link mechanism box, a main transformer cooling control box, a maintenance power supply box and the like, if a worker performs box opening inspection on each box, a large amount of time and labor are consumed, and the operation and maintenance workload is huge; moreover, when external weather condition is abominable, the staff carries out the inspection of unpacking to the box and still probably brings dust, steam into the box, makes the box inside wet, is unfavorable for the normal operating of transformer substation. In addition, the occurrence of abnormal operation of equipment in the transformer substation box body is generally random, and the monitoring of the general transformer substation box body is carried out according to a fixed period, so that the interval time is long, and the abnormal operation of the equipment in the box body is difficult to be found in time by staff.
In summary, it is necessary to provide a substation box monitoring system that reduces the operation and maintenance workload of the substation workers, and enables the workers to control the operation conditions of the devices in the box at any time.
Disclosure of Invention
In order to overcome the defects that the existing transformer substation box monitoring mode needs workers to sequentially open box cabinet doors for inspection, time and labor are wasted, and the transformer substation workers are difficult to find abnormal conditions of equipment operation in time, the invention provides a transformer substation box monitoring system, which reduces operation and maintenance workload, improves working efficiency of the workers and control of equipment conditions in a box body, and reduces adverse effects of frequent box opening of the workers on normal operation of the equipment in the box body.
The present invention aims to solve the above technical problems at least to some extent.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
The utility model provides a transformer substation box monitoring system, the system is including the perception portion, signal concentrator, central processing module and the fortune dimension terminal of the running condition in the staff's of being convenient for monitoring box that are used for gathering box internal information, the perception portion is connected with signal concentrator, transmits the box internal information who gathers to signal concentrator, central processing module and fortune dimension terminal connect gradually, and signal concentrator transmits to central processing module analysis processing after concentrating the box internal information that receives, and central processing module transmits to fortune dimension terminal after with the box internal information analysis processing.
Preferably, the system further comprises an alarm and an execution module for executing locking or allowing information transmission instructions, wherein the alarm is connected with the central processing module, and the central processing module transmits the abnormal information in the analyzed and processed box body to the alarm; the central processing module is connected with the execution module and issues a locking or information transmission permission instruction to the execution module, the execution module is connected with the signal concentrator and executes the locking or information transmission permission instruction, and the locking or information transmission of the signal concentrator to the central processing module is enabled.
Here, the central processing module transmits the abnormal information in the box body after analysis and processing to the alarm, and the alarm can directly reflect the condition in the box body, if abnormal conditions exist, the staff on duty can timely make countermeasures after receiving the alarm information sent by the alarm, so that the direct control performance of the staff on the abnormal condition of equipment in the box body is enhanced.
Preferably, the execution module comprises a locking execution module and an allowing execution module, the central processing module is connected with the locking execution module and issues a locking information transmission instruction to the locking execution module, the locking execution module is connected with the signal concentrator, the locking execution module executes the locking information transmission instruction, and the locking signal concentrator transmits information to the central processing module.
Preferably, the central processing module is connected with the permission execution module, and issues a permission information transmission instruction to the permission execution module, and the permission execution module is connected with the signal concentrator, and the permission execution module executes the permission information transmission instruction, and allows the signal concentrator to transmit information to the central processing module.
Preferably, the alarm comprises a sound alarm module and a light alarm module, when the alarm receives the abnormality of the information in the box body analyzed and processed by the central processing module, the sound alarm module sounds, and the indicator light of the light alarm module is turned off.
The sound alarm module and the light alarm module ensure effective transmission of alarm information, on the other hand, the indicator lamp of the light alarm module is in a normally-on state when the condition inside the box body is normal, and when the alarm receives abnormal information inside the box body after being analyzed and processed by the central processing module, the indicator lamp of the light alarm module is turned off, so that even if the monitoring system provided by the invention fails or the indicator lamp of the light alarm module is damaged, a worker can find out in time, and the real-time control of the equipment condition inside the box body by the worker is ensured.
Preferably, the sensing part includes: the small animal monitoring sensor is used for sensing movement information of small animals in the transformer substation box body; when the small animal monitoring sensor does not sense a signal when the time delta t 1 exceeds a set value time value t set, judging that a shielding object appears in the box body, if the small animal monitoring sensor senses the signal again after the time delta t 2, judging that the small animal enters the box body, if the small animal monitoring sensor does not sense the signal until the time delta t 3, judging that the small animal monitoring sensor stays in the box body, and judging that the information output logic of the small animal monitoring sensor is 1, otherwise, judging that the information output logic of the small animal monitoring sensor is 0.
Preferably, the sensing part further includes: the wind speed monitor is used for monitoring information of the air flow speed in the transformer substation box body; the monitoring range of wind speed monitor matches with the volume of transformer substation's box, when satisfying:
And V min≥f(Q,V)max, the central processing module judges the information output logic of the wind speed monitor to be 1, otherwise, the information output logic is judged to be 0, wherein V min represents the minimum speed of air flow in the box body, f (Q, V) max is the maximum judgment threshold value of the air flow speed, Q represents the total power of the heater corresponding to the air flow in the box body of the transformer substation due to the operation of the heater, and V represents the volume variable of the box body of the transformer substation.
Preferably, the sensing part further includes: the acousto-optic sensor is used for sensing abnormal wiring of the terminal strip and the element in the box body, and generating information of sound and light of spark discharge; when the acousto-optic signal frequency sensed by the acousto-optic sensor meets the following conditions:
fmax≥F≥fmin，
The central processing module judges the information output logic of the acousto-optic sensor as '1', otherwise, judges the information output logic as '0'; wherein F represents the acousto-optic signal frequency sensed by the acousto-optic sensor, F max represents the set maximum acousto-optic signal sensing frequency, and F min represents the set minimum acousto-optic signal sensing frequency;
The smoke sensor is used for sensing smoke information generated in the box body; when the smoke concentration change rate sensed by the smoke sensor meets the following conditions:
ΔQtot1/Δttot≥ΔQset1/Δttot；
Or smoke concentration:
Qtot≥Qset
When the smoke sensor is in the high-speed state, the central processing module judges the information output logic of the smoke sensor to be 1, otherwise, the information output logic of the smoke sensor is judged to be 0; wherein Δq tot1 represents the amount of smoke concentration change sensed by the smoke sensor; Δt tot represents the smoke concentration variation time; Δq set1 represents a set smoke concentration variation constant value; q tot represents the smoke concentration sensed by the smoke sensor; q set represents the set smoke concentration;
Here, when the initial smoke concentration in the case is small, only by means of whether the smoke concentration Q tot meets the condition compared with the set value Q set of the smoke concentration, the sensing sensitivity of the smoke sensor cannot be ensured, but the determination condition of the smoke concentration change rate sensed by the smoke sensor is introduced: and when the delta Q tot1/Δttot≥ΔQset1/Δttot is adopted, the sensing sensitivity of the smoke sensor can be further ensured from the smoke concentration change rate level.
The condensation monitoring sensor is used for sensing water dew information in the box body, and when the condensation monitoring sensor senses that the resistance value of the probe meets the following conditions:
R water≤Rmin, judging the information output logic of the condensation monitoring sensor as '1', otherwise judging as '0'; wherein R water represents the resistance value of the condensation monitoring sensor sensing probe in the box body; r min represents a set minimum resistance value.
Preferably, the sensing part further includes: the displacement sensor is used for sensing the opening or closing information of the cabinet door of the box body; the cabinet door upper end of transformer substation box is equipped with the first contactor A that matches with the sensor that shifts, and the cabinet door lower extreme is equipped with the second contactor B that matches with the sensor that shifts, and when the cabinet door was closed, the output logic of first contactor A and second contactor B took "1", and the central processing module judges the information output logic of sensor that shifts to "1", and when the cabinet door was opened, the output logic of first contactor A and second contactor B took "0", and the central processing module judges the information output logic of sensor that shifts to "0".
Preferably, the central processing module adopts or logic determination for the information logic determination mode of the small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor and the condensation monitoring sensor transmitted by the signal concentrator, when any one logic determination output of the small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor and the condensation monitoring sensor is 1, the central processing module analyzes and processes the received information and transmits the processed information to the operation and maintenance terminal and the alarm, otherwise, the central processing module discards the received information; when the central processing module judges that the information logic of the displacement sensor transmitted by the signal concentrator is 1, the central processing module transmits an information transmission permission instruction to the execution permission module, and the execution permission module executes the information transmission permission instruction; otherwise, the central processing module issues a locking information transmission instruction to the locking execution module, and the locking execution module executes the locking information transmission instruction; the central processing module is in wireless communication connection with the operation and maintenance terminal through the Internet of things technology, and the operation terminal can also send a locking information transmission instruction directly by people.
The monitoring system provided by the invention is used for avoiding the waste of manpower and time caused by the fact that staff needs to sequentially open cabinet doors for inspection when the transformer substation cabinet is monitored, but when the staff needs to open the cabinet doors for maintenance of equipment in the cabinet under emergency conditions, the displacement sensor of the sensing part monitors and senses that the cabinet doors of the cabinet are opened, the output logic of the first contactor A and the second contactor B matched with the displacement sensor is 0, meanwhile, the information of the opening of the cabinet doors is sequentially transmitted to the signal concentrator and the central processing module, the central processing unit transmits a locking information transmission instruction to the execution module, the locking execution module executes the locking information transmission instruction, and the locking signal concentrator transmits information to the central processing module; when the cabinet door is closed by a worker, the monitoring system provided by the invention can monitor and sense the normal transmission of the information in the cabinet body by the sensing part, the central processing module transmits the information transmission permission instruction to the execution permission module, the execution permission module executes the information transmission permission instruction, and the signal concentrator is permitted to transmit the information to the central processing module, so that the existence of the execution module further ensures the control of the worker on the equipment condition in the cabinet body.
The small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor, the condensation monitoring sensor and the deflection sensor are all connected with the signal concentrator, and the information in the collected box body is transmitted to the signal concentrator.
The wind speed monitor is arranged in the box body and can be used for judging whether the sealing condition of the box body is good or not, and the operation condition of the wind speed monitor in the box body environment applied to different sizes is considered, so that the wind speed monitor with proper monitoring range is required to be matched according to the environment size in the box body of the transformer substation, and the accuracy of the wind speed monitor in monitoring the air flow speed information in the box body of the transformer substation is ensured by the monitoring range of the wind speed monitor and the environment size in the box body of the transformer substation.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
According to the substation box monitoring system provided by the invention, the acquired box internal information is transmitted to the signal concentrator through the sensing part, the signal concentrator concentrates the received box internal information and then transmits the concentrated box internal information to the central processing module for analysis and processing, the central processing module analyzes and processes the box internal information and transmits the processed box internal information to the operation and maintenance terminal, a worker does not need to sequentially open the box cabinet door for inspection, the operation condition in the substation box can be directly monitored through the operation and maintenance terminal, the operation and maintenance workload of the worker is reduced, the working efficiency of the worker is improved, the control performance of the equipment condition in the box is improved, and the adverse influence of frequent box opening of the worker on the normal operation of the equipment in the box is reduced.
Drawings
Fig. 1 is a block diagram of a substation box monitoring system according to the present invention.
Fig. 2 shows a logic judgment block diagram of the substation box monitoring system provided by the invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;
it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Example 1
The structure block diagram of the substation box monitoring system shown in fig. 1 comprises a sensing part for collecting internal information of a box, a signal concentrator, a central processing module and an operation and maintenance terminal which is convenient for a worker to monitor the running condition in the box, wherein the sensing part is connected with the signal concentrator and transmits the collected internal information of the box to the signal concentrator, the central processing module and the operation and maintenance terminal are sequentially connected, the signal concentrator concentrates the received internal information of the box and then transmits the concentrated internal information of the box to the central processing module for analysis and treatment, and the central processing module analyzes and processes the internal information of the box and then transmits the internal information of the box to the operation and maintenance terminal.
Referring to fig. 1, the system further comprises an alarm for providing alarm information for staff and an execution module for executing locking or allowing information transmission instructions, wherein the alarm is connected with the central processing module, and the central processing module transmits the abnormal information in the box body after analysis and processing to the alarm; the central processing module is connected with the execution module, the execution module is connected with the signal concentrator, the execution module executes the locking or information transmission permission instruction, and the locking or information transmission permission of the signal concentrator to the central processing module is realized.
In this embodiment, the execution module includes a locking execution module and an enabling execution module, the central processing module is connected with the locking execution module, and issues a locking information transmission instruction to the locking execution module, the locking execution module is connected with the signal concentrator, the locking execution module executes the locking information transmission instruction, and the locking signal concentrator transmits information to the central processing module. The central processing module is connected with the permission execution module and issues permission information transmission instructions to the permission execution module, the permission execution module is connected with the signal concentrator and executes the permission information transmission instructions, and the signal concentrator transmits information to the central processing module.
In this embodiment, the alarm includes sound alarm module and light alarm module, and when the alarm received the information anomaly in the box after the central processing module analysis processing, sound alarm module sounded, light alarm module's pilot lamp goes out.
The sound alarm module and the light alarm module ensure effective transmission of alarm information, on the other hand, the indicator lamp of the light alarm module is in a normally-on state when the condition inside the box body is normal, and the indicator lamp of the light alarm module is turned off when the alarm receives abnormal information inside the box body after being analyzed and processed by the central processing module, so that even if the monitoring system provided by the invention fails or the indicator lamp of the light alarm module is damaged, a worker can timely find the information, and the real-time control performance of the worker on the equipment condition inside the box body is ensured.
Referring to fig. 2, in the present embodiment, the sensing portion includes: the small animal monitoring sensor is used for sensing movement information of small animals in the transformer substation box body; when the small animal monitoring sensor does not sense a signal when the time delta t 1 exceeds a set value time value t set, judging that a shielding object appears in the box body, if the small animal monitoring sensor senses the signal again after the time delta t 2, judging that the small animal enters the box body, if the small animal monitoring sensor does not sense the signal until the time delta t 3, judging that the small animal monitoring sensor stays in the box body, and judging that the information output logic of the small animal monitoring sensor is 1, otherwise, judging that the information output logic of the small animal monitoring sensor is 0.
The sensing portion further includes: the wind speed monitor is used for monitoring information of the air flow speed in the transformer substation box body; the monitoring range of wind speed monitor matches with the volume of transformer substation's box, when satisfying:
And when V min≥f(Q,V)max is set, the central processing module judges the information output logic of the wind speed monitor to be 1, otherwise, the information output logic is judged to be 0, wherein V min represents the minimum speed of air flow in the box body, f (Q, V) max is the maximum judgment threshold value of the air flow speed, Q represents the total power of the heater corresponding to the air flow in the box body of the transformer substation due to the operation of the heater, and V represents the volume variable of the box body of the transformer substation.
The sensing portion further includes: the acousto-optic sensor is used for sensing abnormal wiring of the terminal strip and the element in the box body, and generating information of sound and light of spark discharge; when the acousto-optic signal frequency sensed by the acousto-optic sensor meets the following conditions:
fmax≥F≥fmin，
The central processing module judges the information output logic of the acousto-optic sensor as '1', otherwise, judges the information output logic as '0'; wherein F represents the acousto-optic signal frequency sensed by the acousto-optic sensor, F max represents the set maximum acousto-optic signal sensing frequency, and F min represents the set minimum acousto-optic signal sensing frequency;
The smoke sensor is used for sensing smoke information generated in the box body; when the smoke concentration change rate sensed by the smoke sensor meets the following conditions:
ΔQtot1/Δttot≥ΔQset1/Δttot；
Or smoke concentration:
Qtot≥Qset
When the smoke sensor is in the high-speed state, the central processing module judges the information output logic of the smoke sensor to be 1, otherwise, the information output logic of the smoke sensor is judged to be 0; wherein Δq tot1 represents the amount of smoke concentration change sensed by the smoke sensor; Δt tot represents the smoke concentration variation time; Δq set1 represents a set smoke concentration variation constant value; q tot represents the smoke concentration sensed by the smoke sensor; q set represents the set smoke concentration;
Here, when the initial smoke concentration in the case is small, only by means of whether the smoke concentration Q tot meets the condition compared with the set value Q set of the smoke concentration, the sensing sensitivity of the smoke sensor cannot be ensured, but the determination condition of the smoke concentration change rate sensed by the smoke sensor is introduced: and when the delta Q tot1/Δttot≥ΔQset1/Δttot is adopted, the sensing sensitivity of the smoke sensor can be further ensured from the smoke concentration change rate level.
The condensation monitoring sensor is used for sensing water dew information in the box body, and when the condensation monitoring sensor senses that the resistance value of the probe meets the following conditions:
R water≤Rmin, judging the information output logic of the condensation monitoring sensor as '1', otherwise judging as '0'; wherein R water represents the resistance value of the condensation monitoring sensor sensing probe in the box body; r min represents a set minimum resistance value.
The sensing portion further includes: the displacement sensor is used for sensing the opening or closing information of the cabinet door of the box body; the cabinet door upper end of transformer substation box is equipped with the first contactor A that matches with the sensor that shifts, and the cabinet door lower extreme is equipped with the second contactor B that matches with the sensor that shifts, and when the cabinet door was closed, the output logic of first contactor A and second contactor B took "1", and the central processing module judges the information output logic of sensor that shifts to "1", and when the cabinet door was opened, the output logic of first contactor A and second contactor B took "0", and the central processing module judges the information output logic of sensor that shifts to "0".
Referring to the logic judgment block diagram of the substation box monitoring system shown in fig. 2, the central processing module adopts or logic judgment for the information logic judgment modes of the small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor and the condensation monitoring sensor transmitted by the signal concentrator, when any one logic judgment output of the small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor and the condensation monitoring sensor is 1, the central processing module analyzes and processes the received information and transmits the processed information to the operation and maintenance terminal and the alarm, otherwise, the central processing module discards the received information; when the central processing module judges that the information logic of the displacement sensor transmitted by the signal concentrator is 1, the central processing module transmits an information transmission permission instruction to the execution permission module, and the execution permission module executes the information transmission permission instruction; otherwise, the central processing module issues a locking information transmission instruction to the locking execution module, and the locking execution module executes the locking information transmission instruction; in addition, the central processing module is in wireless communication connection with the operation and maintenance terminal through the Internet of things technology, and in a specific implementation, when a worker finds out the fault or other unexpected conditions of the box body, the worker can also manually and directly issue a locking information transmission instruction.
The monitoring system provided by the invention is used for avoiding that a worker needs to sequentially open cabinet doors of the cabinet to check when monitoring the cabinet of the transformer substation, so that the manpower and time are wasted, but when the worker needs to open the cabinet doors to maintain equipment in the cabinet under emergency conditions, the first contactor A and the second contactor B matched with the displacement sensor output logic to be 0 when monitoring the cabinet doors of the cabinet to avoid the displacement sensor to sense the opening of the cabinet doors of the cabinet, and simultaneously, the information of the opening of the cabinet doors is sequentially transmitted to the signal concentrator and the central processing module, the central processing unit transmits a locking information transmission instruction to the execution module, the locking execution module executes the locking information transmission instruction, and the locking signal concentrator transmits the information to the central processing module; when the cabinet door is closed by a worker, the monitoring system provided by the invention can monitor and sense the normal transmission of the information in the cabinet body by the sensing part, the central processing module transmits the information transmission permission instruction to the execution permission module, the execution permission module executes the information transmission permission instruction, and the signal concentrator is permitted to transmit the information to the central processing module, so that the existence of the alarm and the execution module further ensures the control of the worker on the equipment condition in the cabinet body.
The small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor, the condensation monitoring sensor and the deflection sensor are all connected with the signal concentrator, and the information in the collected box body is transmitted to the signal concentrator.
The wind speed monitor is arranged in the box body and can be used for judging whether the sealing condition of the box body is good or not, and the operation condition of the wind speed monitor in the box body environment applied to different sizes is considered, so that the wind speed monitor with proper monitoring range is required to be matched according to the environment size in the box body of the transformer substation, and the accuracy of the wind speed monitor in monitoring the air flow speed information in the box body of the transformer substation is ensured by the monitoring range of the wind speed monitor and the environment size in the box body of the transformer substation. The same or similar reference numerals correspond to the same or similar components;
The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent;
It is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (5)
1. The transformer substation box monitoring system is characterized by comprising a sensing part, a signal concentrator, a central processing module and an operation and maintenance terminal, wherein the sensing part is used for collecting information in the box, the operation and maintenance terminal is convenient for a worker to monitor the running condition in the box, the sensing part is connected with the signal concentrator, the collected information in the box is transmitted to the signal concentrator, the central processing module and the operation and maintenance terminal are sequentially connected, the signal concentrator concentrates the received information in the box and then transmits the concentrated information to the central processing module for analysis and treatment, and the central processing module analyzes and processes the information in the box and then transmits the information to the operation and maintenance terminal;
The sensing part includes: the small animal monitoring sensor is used for sensing movement information of small animals in the transformer substation box body; when the small animal monitoring sensor does not sense a signal when the time delta t 1 exceeds a set value time value tset, judging that a shielding object appears in the box body, if the small animal monitoring sensor senses the signal again after the time delta t 2, judging that the small animal enters the box body, but if the small animal monitoring sensor does not sense the signal until the time reaches the upper time limit delta t 3, judging that the small animal monitoring sensor stays in the box body, judging that the information output logic of the small animal monitoring sensor is 1, otherwise, judging that the information output logic of the small animal monitoring sensor is 0;
The sensing portion further includes: the wind speed monitor is used for monitoring information of the air flow speed in the transformer substation box body; the monitoring range of wind speed monitor matches with the volume of transformer substation's box, when satisfying:
When V min≥f(Q,V)max, the central processing module judges the information output logic of the wind speed monitor to be 1, otherwise, the information output logic is judged to be 0, wherein V min represents the minimum speed of the air flow in the box body monitored by the wind speed monitor, f (Q, V) max is the maximum judgment threshold value of the air flow speed, Q represents the total power of the heater corresponding to the air flow in the box body of the transformer substation due to the operation of the heater, and V represents the actual volume variable of the box body of the transformer substation;
The sensing portion further includes: the acousto-optic sensor is used for sensing characteristic information of sound and light of spark discharge, which is generated when the wiring of the terminal strip and the element in the box body is abnormal; when the acousto-optic signal frequency sensed by the acousto-optic sensor meets the following conditions:
fmax≥F≥fmin，
The central processing module judges the information output logic of the acousto-optic sensor as '1', otherwise, judges the information output logic as '0'; wherein F represents the acousto-optic signal frequency sensed by the acousto-optic sensor, F max represents the set maximum acousto-optic signal sensing frequency, and F min represents the set minimum acousto-optic signal sensing frequency;
The smoke sensor is used for sensing smoke information generated in the box body; when the smoke concentration change rate sensed by the smoke sensor meets the following conditions:
ΔQtot1/Δttot≥ΔQset1/Δttot；
Or smoke concentration:
Qtot≥Qset
When the smoke sensor is in the high-speed state, the central processing module judges the information output logic of the smoke sensor to be 1, otherwise, the information output logic of the smoke sensor is judged to be 0; wherein Δq tot1 represents the amount of smoke concentration change sensed by the smoke sensor; Δt tot represents the smoke concentration variation time; Δq set1 represents a set smoke concentration variation constant value; qtot represents the smoke concentration sensed by the smoke sensor; qset represents the set smoke concentration;
the condensation monitoring sensor is used for sensing condensation water dew information in the box body, and when the condensation monitoring sensor senses that the resistance value of the probe meets the following conditions:
When Rwater is less than or equal to Rmin, the central processing module judges the information output logic of the condensation monitoring sensor to be 1, otherwise, judges the information output logic to be 0; wherein Rwater represents the resistance value of the sensing probe of the condensation monitoring sensor in the box body; rmin represents a set minimum resistance value;
The sensing portion further includes: the displacement sensor is used for sensing the opening or closing information of the cabinet door of the box body; the upper end of a cabinet door of the transformer substation box body is provided with a first contactor A matched with the displacement sensor, the lower end of the cabinet door is provided with a second contactor B matched with the displacement sensor, when the cabinet door is closed, the output logic of the first contactor A and the output logic of the second contactor B are 1, the central processing module judges the information output logic of the displacement sensor to be 1, when the cabinet door is opened, the output logic of the first contactor A and the output logic of the second contactor B are 0, and the central processing module judges the information output logic of the displacement sensor to be 0;
The central processing module adopts OR logic judgment on the information logic judgment modes of the small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor and the condensation monitoring sensor transmitted by the signal concentrator, when any logic judgment output of the small animal monitoring sensor, the wind speed monitor, the acousto-optic sensor, the smoke sensor and the condensation monitoring sensor is 1, the central processing module analyzes and processes the received information and transmits the processed information to the operation and maintenance terminal and the alarm, otherwise, the central processing module discards the received information; when the central processing module judges that the information logic of the displacement sensor transmitted by the signal concentrator is 1, the central processing module transmits an information transmission permission instruction to the execution permission module, and the execution permission module executes the information transmission permission instruction; otherwise, the central processing module issues the locking information transmission instruction to the locking execution module, and the locking execution module executes the locking information transmission instruction.
2. The substation box monitoring system according to claim 1, further comprising an alarm and an execution module for executing a locking or allowing information transmission instruction, wherein the alarm is connected with the central processing module, and the central processing module transmits the abnormal information in the box after analysis and processing to the alarm; the central processing module is connected with the execution module and issues a locking or information transmission permission instruction to the execution module, the execution module is connected with the signal concentrator and executes the locking or information transmission permission instruction, and the locking or information transmission of the signal concentrator to the central processing module is enabled.
3. The substation box monitoring system according to claim 2, wherein the execution module comprises a lock execution module and an allow execution module, the central processing module is connected with the lock execution module, and issues a lock information transmission instruction to the lock execution module, the lock execution module is connected with the signal concentrator, the lock execution module executes the lock information transmission instruction, and the lock signal concentrator transmits information to the central processing module.
4. The substation box monitoring system according to claim 3, wherein the central processing module is connected to the permit execution module, and issues permit information transmission instructions to the permit execution module, and the permit execution module is connected to the signal concentrator, and the permit execution module executes permit information transmission instructions, and permits information transmission from the signal concentrator to the central processing module.
5. The substation box monitoring system according to claim 2, wherein the alarm comprises an audible alarm module and a light alarm module, and when the alarm receives the abnormality of the information in the box analyzed and processed by the central processing module, the audible alarm module sounds, and the indicator light of the light alarm module is turned off.
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