CN115000854A - Ventilation system for GIS prefabricated cabin of transformer substation and control method - Google Patents

Ventilation system for GIS prefabricated cabin of transformer substation and control method Download PDF

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Publication number
CN115000854A
CN115000854A CN202210743430.7A CN202210743430A CN115000854A CN 115000854 A CN115000854 A CN 115000854A CN 202210743430 A CN202210743430 A CN 202210743430A CN 115000854 A CN115000854 A CN 115000854A
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China
Prior art keywords
fan
gis
sensor
temperature
prefabricated cabin
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Pending
Application number
CN202210743430.7A
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Chinese (zh)
Inventor
李新海
刘文平
肖星
罗海鑫
王振刚
孟晨旭
陈伟明
陈平
梅龙军
朱文吉
姚光久
周恒�
袁拓来
罗其锋
蔡根满
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Zhongshan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Zhongshan Power Supply Bureau of Guangdong Power Grid Co Ltd
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Application filed by Guangdong Power Grid Co Ltd, Zhongshan Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202210743430.7A priority Critical patent/CN115000854A/en
Publication of CN115000854A publication Critical patent/CN115000854A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/56—Cooling; Ventilation
    • H02B1/565—Cooling; Ventilation for cabinets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/025—Safety arrangements, e.g. in case of excessive pressure or fire due to electrical defect
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/065—Means for detecting or reacting to mechanical or electrical defects
    • H02B13/0655—Means for detecting or reacting to mechanical or electrical defects through monitoring changes of gas properties
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B7/00—Enclosed substations, e.g. compact substations
    • H02B7/06—Distribution substations, e.g. for urban network
    • 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
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ventilation (AREA)

Abstract

The invention provides a ventilation system and a control method for a GIS prefabricated cabin of a transformer substation, wherein the system comprises the following steps: the system comprises a gas sensor, a temperature and humidity sensor, an infrared sensor, a fan current sensor, a microcontroller, a fan, an air conditioner and a dustproof ventilation device; the signal input end of the microcontroller is connected with the gas sensor, the temperature and humidity sensor, the infrared sensor and the fan current sensor, and the signal output end of the microcontroller is connected with the fan, the air conditioner and the dustproof ventilation device; the microcontroller controls the start and stop of the fan, the air conditioner and the dustproof ventilation device in a linkage manner according to the data of the gas sensor, the temperature and humidity sensor and the infrared sensor; monitoring whether the gas concentration and the temperature and humidity are abnormal; judging whether the fan fails according to the fan current sensor data; and when the data of gas concentration and temperature and humidity are abnormal or the fan fails, an alarm signal is sent. The invention can maintain the environmental factors in the GIS room of the prefabricated cabin at a normal level, find out the fan fault in time and ensure the normal operation of GIS equipment and the safety of personnel.

Description

Ventilation system for GIS prefabricated cabin of transformer substation and control method
Technical Field
The invention relates to the technical field of transformer substations, in particular to a ventilation system of a GIS prefabricated cabin of a transformer substation and a control method.
Background
With the rapid increase of urban power load, based on economic and safety considerations, a transformer substation needs to be newly built in an urban center, and the transformer substation is built in an urban center area, so that the occupied area and the construction period of the transformer substation are very important. The modularized prefabricated cabin type transformer substation is applied to the urban center, the problems that the traditional transformer substation is long in construction period, large in occupied area, non-uniform in process installation standard and the like can be solved, the miniaturization of the transformer substation can be realized, the engineering construction efficiency and quality can be improved, and the cost can be effectively reduced.
GIS (gas insulated switchgear) gas insulated totally-enclosed combined electrical equipment is an important power supply equipment in power grid, and the inside of the GIS (gas insulated switchgear) gas insulated totally-enclosed combined electrical equipment is filled with SF with certain pressure 6 Gas for arc extinction and insulation. The GIS room is the place of placing GIS equipment specially, and the indoor ventilation state of GIS will seriously influence GIS equipment's normal operating and personnel's life safety.
Little and airtight in GIS indoor space in prefabricated cabin of transformer substation, current ventilation system has following shortcoming: firstly, the collection criterion information is single, and only the indoor temperature and SF are collected 6 The concentration is used as the operation criterion of the ventilation system, and the multi-dimensional detection of the GIS indoor operation condition of the prefabricated cabin cannot be realized; secondly, the system is lack of linkage, the GIS indoor air conditioner of the GIS prefabricated cabin of the existing transformer substation is normally opened, and the fan is only used for controlling the indoor temperature and SF 6 The linkage of the fan, the air conditioner and the dustproof ventilation device cannot be realized when the concentration is started and stopped. The system is low in intelligentization level, the fan is started manually usually, whether the fan is normal or not is judged manually through the fan starting sound, but the conditions that the detection is not in place or even misjudged possibly exist in manual detection, and functions of automatically starting the fan before operation and maintenance personnel enter, fan fault detection, fire detection and the like cannot be achieved.
Disclosure of Invention
The invention aims to provide a ventilation system of a GIS prefabricated cabin of a transformer substation and a control method, and aims to solve the technical problem that potential safety hazards exist in equipment and personnel due to the fact that environmental factors in the GIS room of the prefabricated cabin cannot be automatically controlled in the prior art.
The purpose of the invention can be realized by the following technical scheme:
a transformer substation GIS prefabricated cabin ventilation system comprises:
the system comprises a gas sensor, a temperature and humidity sensor, an infrared sensor, a fan current sensor, a microcontroller, a fan, an air conditioner and a dustproof ventilation device;
the signal input end of the microcontroller is connected with the gas sensor, the temperature and humidity sensor, the infrared sensor and the fan current sensor, and the signal output end of the microcontroller is connected with the fan, the air conditioner and the dustproof ventilation device;
the gas sensor detects a gas concentration value in the GIS chamber of the prefabricated cabin, the temperature and humidity sensor detects temperature and humidity data in the GIS chamber of the prefabricated cabin, the infrared sensor detects whether a person enters the GIS chamber of the prefabricated cabin, and the fan current sensor detects a working current value of the fan;
the microcontroller controls the starting and stopping of the fan, the air conditioner and the dustproof ventilation device in a linkage manner according to the data of the gas sensor, the infrared sensor and the temperature and humidity sensor; monitoring whether the gas concentration and the temperature and humidity in the GIS chamber of the prefabricated cabin are abnormal or not; judging whether the fan fails according to the data of the fan current sensor; when the data of gas concentration and temperature and humidity are abnormal or the fan fails, an alarm signal is sent out so as to be convenient for timely maintenance;
the fan is used for ventilating and adjusting the gas concentration in the prefabricated cabin GIS room, the air conditioner is used for ventilating and adjusting the temperature and humidity in the prefabricated cabin GIS room, and the dustproof ventilating device filters dust in the prefabricated cabin GIS room and ventilates.
Optionally, the method further comprises:
a fire detector for monitoring a fire signal;
the fire detector is connected with the signal input end of the microcontroller, and the microcontroller automatically closes the fan, the air conditioner and the dustproof ventilation device according to a fire signal monitored by the fire detector.
Optionally, the method further comprises:
and the monitoring center is used for receiving the alarm signal and is connected with the signal output end of the microcontroller.
Optionally, the gas sensor comprises at least:
SF 6 sensor and O 2 Sensors respectively for detecting SF in the GIS room of the prefabricated cabin 6 、O 2 The concentration value of (b).
Optionally, the microcontroller is a PC.
The invention also provides a ventilation control method of the GIS prefabricated cabin of the transformer substation, which is applied to the ventilation system of the GIS prefabricated cabin of the transformer substation and comprises the following steps:
starting and stopping the fan and the dustproof ventilation device according to data detected by the gas sensor and the infrared sensor in a linkage manner, so that the gas concentration in the GIS chamber of the prefabricated cabin meets a preset gas concentration limit value;
controlling the start and stop of an air conditioner according to temperature and humidity data detected by a temperature and humidity sensor so that the temperature and humidity in the GIS room of the prefabricated cabin meet preset temperature and humidity limit values;
judging whether the fan fails or not according to the fan working current detected by a fan current sensor;
and when the gas concentration does not meet a preset gas concentration limit value or the temperature and humidity data does not meet a preset temperature and humidity limit value or the fan fails, sending an alarm signal.
Optionally, the method further comprises:
and when a fire signal sent by a fire detector is monitored, the fan, the air conditioner and the dustproof ventilation device are closed.
Optionally, the gas sensor comprises at least: detection of SF 6 SF of concentration value 6 Sensor and detection O 2 O of concentration value 2 The sensor, the data linkage control fan that detects according to gas sensor, infrared sensor stops with opening of dustproof ventilation unit and includes:
when detected SF 6 When the concentration value is greater than or equal to a preset first starting threshold value, starting after preset starting delayMoving the fan and the dustproof ventilation device; when detected SF 6 When the concentration value is smaller than a preset first shutdown threshold value, the fan and the dustproof ventilation device are closed; or
When detected O 2 When the concentration value is less than or equal to a preset second starting threshold value, starting the fan and the dustproof ventilation device after preset starting delay; when detected O 2 When the concentration value is greater than a preset second shutdown threshold value, closing the fan and the dustproof ventilation device; or
When the infrared sensor detects that a person enters the GIS prefabricated cabin, the fan and the dustproof ventilation device are started, and after the infrared sensor continuously operates for a preset time, the fan and the dustproof ventilation device are closed.
Optionally, controlling the start and stop of the air conditioner according to the temperature and humidity data detected by the temperature and humidity sensor includes:
when the detected temperature and humidity data reach a preset third starting threshold value, starting the air conditioner, and adjusting a temperature value and air volume according to the temperature and humidity data;
and when the detected temperature and humidity data reach a preset third shutdown threshold value, closing the air conditioner.
Optionally, judging whether the fan fails according to the fan working current detected by the fan current sensor includes:
and when the detected fan working current data is larger than or equal to a preset fan current threshold value, judging that the fan normally operates, otherwise, judging that the fan breaks down.
The invention provides a transformer substation GIS prefabricated cabin ventilation system and a control method, wherein the system comprises: the system comprises a gas sensor, a temperature and humidity sensor, an infrared sensor, a fan current sensor, a microcontroller, a fan, an air conditioner and a dustproof ventilation device; the signal input end of the microcontroller is connected with the gas sensor, the temperature and humidity sensor, the infrared sensor and the fan current sensor, and the signal output end of the microcontroller is connected with the fan, the air conditioner and the dustproof ventilation device; the gas sensor detects a gas concentration value in the GIS chamber of the prefabricated cabin, the temperature and humidity sensor detects temperature and humidity data in the GIS chamber of the prefabricated cabin, the infrared sensor detects whether a person enters the GIS chamber of the prefabricated cabin, and the fan current sensor detects a working current value of the fan; the microcontroller controls the starting and stopping of the fan, the air conditioner and the dustproof ventilation device in a linkage manner according to the data of the gas sensor, the infrared sensor and the temperature and humidity sensor; monitoring whether the gas concentration and the temperature and humidity in the GIS chamber of the prefabricated cabin are abnormal or not; judging whether the fan breaks down or not according to the data of the fan current sensor; when the data of gas concentration and temperature and humidity are abnormal or the fan breaks down, an alarm signal is sent out so as to overhaul in time; the fan is used for ventilating and adjusting the gas concentration in the prefabricated cabin GIS room, the air conditioner is used for ventilating and adjusting the temperature and humidity in the prefabricated cabin GIS room, and the dustproof ventilating device filters dust in the prefabricated cabin GIS room and ventilates.
Based on the technical scheme, the invention has the beneficial effects that:
the invention is based on the SF in the GIS room of the prefabricated cabin of the transformer substation 6 Concentration, O 2 The concentration, the temperature and the humidity and the working current of the fan are controlled by the microcontroller in a linkage manner to control the fan, the air conditioner and the dustproof ventilation device to start and stop, so that the temperature and the humidity and the SF in the GIS room of the prefabricated cabin of the transformer substation are maintained 6 Concentration, O 2 The concentration is at a normal level, so that the normal operation of the GIS equipment and the life safety of operation and maintenance personnel are guaranteed; meanwhile, the microcontroller automatically judges the running state of the fan according to the running current value of the fan detected by the fan current sensor, finds out the fan fault in time and sends out an alarm signal to inform operators of maintenance or emergency treatment; the invention realizes the functions of automatically starting the fan before the operation and maintenance personnel enter, detecting and alarming the fan fault, detecting and emergent fire and the like.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic flow chart of the method of the present invention.
Detailed Description
The embodiment of the invention provides a ventilation system of a GIS prefabricated cabin of a transformer substation and a control method, and aims to solve the technical problem that potential safety hazards exist in equipment and personnel due to the fact that environmental factors in the GIS room of the prefabricated cabin cannot be automatically controlled in the prior art.
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The GIS indoor space of the prefabricated cabin of the transformer substation is small and closed, on one hand, the temperature and humidity and the oxygen concentration in the GIS room need to be kept normal, and when the external environment is in a severe state, external moisture, sand and dust are prevented from entering the GIS room; on the other hand, heat emitted by GIS indoor equipment should be discharged in time, otherwise the safe and stable operation of the power grid is affected.
Referring to fig. 1, an embodiment of a ventilation system for a prefabricated compartment of a GIS of a transformer substation provided by the present invention includes:
the system comprises a gas sensor 11, a temperature and humidity sensor 12, an infrared sensor 13, a fan current sensor 14, a microcontroller 2, a fan 31, an air conditioner 32 and a dustproof ventilation device 33;
the signal input end of the microcontroller 2 is connected with the gas sensor 11, the temperature and humidity sensor 12, the infrared sensor 13 and the fan current sensor 14, and the signal output end of the microcontroller 2 is connected with the fan 31, the air conditioner 32 and the dustproof ventilation device 33;
the gas sensor 11 detects a gas concentration value in the GIS chamber of the prefabricated cabin, the temperature and humidity sensor 12 detects temperature and humidity data in the GIS chamber of the prefabricated cabin, the infrared sensor 13 detects whether a person enters the GIS chamber of the prefabricated cabin, and the fan current sensor 14 detects a working current value of the fan 31;
the microcontroller 2 controls the start and stop of the fan 31, the air conditioner 32 and the dustproof ventilation device 33 in a linkage manner according to the data of the gas sensor 11, the infrared sensor 13 and the temperature and humidity sensor 12; monitoring whether the gas concentration and the temperature and humidity in the GIS chamber of the prefabricated cabin are abnormal or not; judging whether the fan fails according to the data of the fan current sensor 14; when the data of gas concentration and temperature and humidity are abnormal or the fan 31 is in failure, an alarm signal is sent out so as to be convenient for timely maintenance;
fan 31 is used for the ventilation and adjusts the indoor gas concentration of prefabricated cabin GIS, air conditioner 32 is used for the ventilation and adjusts the indoor humiture of prefabricated cabin GIS, dustproof ventilation unit 33 filters the indoor dust of prefabricated cabin GIS and ventilates.
In this embodiment, the gas sensor includes at least: SF 6 Sensor and O 2 Sensors respectively for detecting SF in the GIS room of the prefabricated cabin 6 、O 2 The concentration value of (c). Specifically, the gas sensor is arranged near the GIS equipment and used for detecting SF 6 Concentration value, O 2 The concentration value data is uploaded to the microcontroller in real time, and the data is displayed on a display screen of the microcontroller in real time.
In one embodiment, the substation GIS prefabricated cabin ventilation system further comprises: the fire detector 15 is used for monitoring fire signals, the fire detector 15 is connected with the signal input end of the microcontroller 2, and in the preferred embodiment, the fire detector 15 is arranged on the indoor roof of the GIS room of the prefabricated cabin. In this embodiment, the fan 31, the air conditioner 32, and the dust-proof ventilation device 33 are linked with the fire detector 15, and when the fire detector 15 detects a fire signal, the microcontroller 2 automatically turns off the fan 31, the air conditioner 32, and the dust-proof ventilation device 33.
In another embodiment, the ventilation system further comprises: and the monitoring center 34 is connected with the signal output end of the microcontroller 2, and can receive the alarm signal sent by the microcontroller 2 so as to inform operation and maintenance personnel of maintenance or emergency treatment in time.
In a preferred embodiment, the temperature and humidity sensor 12 in this embodiment is disposed on a wall inside a GIS room of the prefabricated cabin, and the infrared sensor 13 is disposed near the door of the GIS prefabricated cabin; the fan current sensor 14 is arranged on a control loop of the fan 31; the fan 31, the air conditioner 32 and the dustproof ventilation device 33 are all arranged in the GIS room of the prefabricated cabin and used for ventilating the GIS room.
Specifically, the fan current sensor 14 detects a working current value of the fan 31 during operation, and when the detected working current value is abnormal, it is determined that the fan 31 has a fault, and the fault warning information is sent to the monitoring center 34, so that the operation and maintenance personnel can grasp the fan fault condition and arrange fan maintenance in time.
Specifically, the air conditioner 32 can carry out automatic input according to the indoor humiture condition of GIS, and temperature and humidity sensor 12 uploads the humiture data that detect to microcontroller 2, and when humiture data reachd the air conditioner that predetermines and starts the humiture definite value, microcontroller 2 control air conditioner 32 starts to set for temperature value and the amount of wind size of air conditioner 32 are adjusted according to humiture data, thereby guarantee GIS indoor equipment operational environment's optimization.
Specifically, dustproof ventilation unit 33 outside adopts electronic shutter to carry out the sand by wind dust prefilter, carries out the sediment of grit and dust, carries out last one at last through high protection filter screen to the dust and filters. In this embodiment, the dustproof ventilation device 33 is linked with the fan 31, and when the microcontroller 2 starts the fan 31, the dustproof ventilation device 33 is started at the same time, and the electric shutter is opened for ventilation; after the fan is shut down, the electric shutter is closed, and outdoor dust is prevented from entering a GIS chamber of the prefabricated cabin.
The embodiment detects SF in the GIS chamber of the prefabricated cabin through the gas sensor 11 6 、O 2 Concentration, temperature and humidity in the GIS room of the prefabricated cabin are detected through a temperature and humidity sensor 12, whether a person enters the GIS prefabricated cabin is detected through an infrared sensor 13, and current is sent to a fanThe sensor 14 detects the operating current value of the fan 31; the start and stop of the fan 31, the air conditioner 32 and the dustproof ventilation device 33 are controlled by the microcomputer controller 2, and the SF in the GIS room of the prefabricated cabin is automatically detected 6 Concentration, O 2 Concentration, temperature and humidity, and SF in GIS chamber of prefabricated cabin 6 The automatic control of concentration, O2 concentration and temperature and humidity ensures the SF in the GIS room of the prefabricated cabin 6 Concentration, O 2 Concentration, humiture meet the requirements, and microcontroller 2 judges whether fan 31 breaks down according to the fan operating current that detects, in time discovers the fan trouble, improves GIS prefabricated cabin ventilation efficiency.
It should be noted that the microcomputer controller 2 can control the start and stop of the fan 31, the air conditioner 32 and the dust-proof ventilation device 33, and can also be provided with a fan start SF 6 Concentration fixed value and fan shutdown SF 6 Concentration setting and fan starting O 2 Concentration fixed value and fan stop O 2 The air conditioner control system comprises a concentration fixed value, a fan starting delay fixed value, a ventilation time fixed value, a fan current fixed value, an air conditioner starting temperature and humidity fixed value and an air conditioner set temperature value.
In this embodiment, three modes of the blower 31 can be set in the microcomputer controller 2: automatic start, manual start and stop modes. Specifically, the automatic starting mode of the fan is as follows: when gas sensor 11 collects SF 6 The concentration constant value is more than or equal to the start SF of the fan 6 During concentration setting, the fan is started after the fan is started for delaying the setting time; when gas sensor 11 collects O 2 The concentration setting value is less than or equal to the starting O of the fan 2 During concentration setting, the fan is started after the fan is started for delaying the setting time; when the infrared sensor 13 detects that someone is about to enter the GIS room, the fan is automatically started.
Specifically, the manual start mode of the fan 31: before entering a GIS room, system operation and maintenance personnel manually input a fan by operating a manual button of the microcomputer controller 2 to ensure the safety of the operation and maintenance personnel; the operation and maintenance personnel manually quit the fan by operating the stop button of the microcomputer controller 2, so that long-term operation under unnecessary conditions is avoided, the failure rate of the fan is reduced, and the service life of the fan is prolonged.
In particular, a fanThe stop mode of (1) is: when gas sensor 11 collects SF 6 Concentration fixed value is less than fan shutdown SF 6 When the concentration is set, stopping the fan; when gas sensor 11 collects O 2 Concentration fixed value is greater than fan shutdown O 2 Stopping the fan from running when the concentration is constant; when the infrared sensor 13 detects that someone enters the GIS room, the fan is started, and the fan is stopped after the continuous operation and ventilation time is fixed.
In this embodiment, the microcomputer controller 2 may set a manual start detection mode and a periodic start detection mode for automatically detecting the state of the fan ventilation system.
Specifically, the manual start detection mode of the microcontroller 2 is: the field operation and maintenance personnel can operate a manual button of the microcomputer controller 2 to start the fan 31, the working current value of the fan 31 in operation is detected through the fan current sensor 14, when the working current value of the fan 31 is larger than or equal to the fan current fixed value, the fan 31 in operation is judged to be normally started, otherwise, the fan is abnormal (has a fault), and finally, the manual start is realized to detect whether the ventilation system state of the fan is normal or not.
Specifically, the periodic start detection mode of the microcontroller 2 is: the microcomputer controller 2 can automatically start the fan 31 periodically according to a set detection period, detect the working current value of the fan 31 in operation through the fan current sensor 14, judge that the fan 31 in operation is started normally when the working current value of the fan 31 is larger than or equal to the fan current fixed value, otherwise, judge that the fan 31 in operation is abnormal (has a fault), and finally realize the periodic automatic start to detect whether the fan ventilation system state is normal.
In this embodiment, the preferred implementation mode is that the microcomputer controller 2 is a PC, which includes a display screen and can display "O" in real time 2 Concentration "," SF 6 Concentration, temperature, humidity, abnormal starting of the fan, normal starting of the fan and the like.
In a preferred embodiment, the microcomputer controller 2 further comprises an alarm module for alarming when "abnormal fan start" or "O" is detected 2 Concentration "," SF 6 Abnormal information such as data abnormality of concentration, temperature and humidityAnd immediately sending an alarm signal, uploading a 'soft message' or 'hard contact' alarm signal to a monitoring center, and timely informing an operator of maintenance or emergency treatment.
It should be noted that the term "soft message" means that the alarm signal sent by the device is transmitted to the monitoring center 34 in the form of a soft message, and does not need a secondary loop. By "hard-wired" it is meant that the device sends a hard-wired outgoing remote signaling signal to the monitoring center 34, requiring a secondary loop to implement, connecting the outgoing (hard-wired) of the device to the incoming of the microcontroller 2, and then sending a signal to the device for execution.
The transformer substation GIS prefabricated cabin ventilation system provided by the embodiment is based on SF in a prefabricated cabin GIS room 6 Concentration, O 2 The concentration, the temperature and the humidity and the working current of the fan are controlled by the microcontroller in a linkage manner to control the fan, the air conditioner and the dustproof ventilation device to start and stop, so that the temperature and the humidity and the SF in the GIS room of the prefabricated cabin of the transformer substation are maintained 6 Concentration, O 2 The concentration is at a normal level, so that the normal operation of the GIS equipment and the life safety of operation and maintenance personnel are guaranteed; meanwhile, the microcontroller automatically judges the running state of the fan according to the running current value of the fan detected by the fan current sensor, finds out the fan fault in time and sends out an alarm signal to inform operators of maintenance or emergency treatment; the embodiment realizes the functions of automatically starting the fan, detecting and alarming the fan fault, detecting the fire, emergently and the like before operation and maintenance personnel enter.
Referring to fig. 2, the present invention further provides an embodiment of a ventilation control method for a transformer substation GIS prefabricated cabin, which is applied to a ventilation system for a transformer substation GIS prefabricated cabin, and the method includes:
s100: controlling the starting and stopping of the fan and the dustproof ventilation device in a linkage manner according to data detected by the gas sensor and the infrared sensor so that the gas concentration in the GIS chamber of the prefabricated cabin meets a preset gas concentration limit value;
s200: controlling the start and stop of an air conditioner according to temperature and humidity data detected by a temperature and humidity sensor so that the temperature and humidity in the GIS room of the prefabricated cabin meet preset temperature and humidity limit values;
s300: judging whether the fan breaks down or not according to the fan working current detected by a fan current sensor;
s400: and when the gas concentration does not meet a preset gas concentration limit value or the temperature and humidity data does not meet a preset temperature and humidity limit value or the fan fails, sending an alarm signal.
The preferred embodiment, still include: and when a fire signal sent by the fire detector is monitored, the fan, the air conditioner and the dustproof ventilation device are closed.
Specifically, the gas sensor includes at least: detection of SF 6 SF of concentration value 6 Sensor and detection O 2 O of concentration value 2 The sensor, the data linkage control fan that detects according to gas sensor, infrared sensor stops with opening of dustproof ventilation unit and includes:
when detected SF 6 When the concentration value is greater than or equal to a preset first starting threshold value, starting the fan and the dustproof ventilation device after preset starting delay; when SF is detected 6 When the concentration value is smaller than a preset first shutdown threshold value, closing the fan and the dustproof ventilation device; or
When detected O 2 When the concentration value is less than or equal to a preset second starting threshold value, starting the fan and the dustproof ventilation device after preset starting delay; when detected O 2 When the concentration value is greater than a preset second shutdown threshold value, closing the fan and the dustproof ventilation device; or
When the infrared sensor detects that a person enters the GIS prefabricated cabin, the fan and the dustproof ventilation device are started, and the fan and the dustproof ventilation device are closed after the infrared sensor continuously operates for a preset time.
Specifically, the start and stop of the humiture data control air conditioner that detects according to the humiture sensor includes:
when the detected temperature and humidity data reach a preset third starting threshold value, starting the air conditioner, and adjusting a temperature value and air volume according to the temperature and humidity data; and when the detected temperature and humidity data reach a preset third shutdown threshold value, closing the air conditioner.
Specifically, judging whether the fan fails according to the fan working current detected by the fan current sensor includes: and when the detected fan working current data is larger than or equal to a preset fan current threshold value, judging that the fan normally operates, otherwise, judging that the fan breaks down.
The ventilation control method for the GIS prefabricated cabin of the transformer substation provided by the embodiment is based on SF in the GIS room of the prefabricated cabin 6 Concentration, O 2 The concentration, the temperature and the humidity and the working current of the fan are controlled by the microcontroller in a linkage manner to control the fan, the air conditioner and the dustproof ventilation device to start and stop, so that the temperature and the humidity and the SF in the GIS room of the prefabricated cabin of the transformer substation are maintained 6 Concentration, O 2 The concentration is at a normal level, so that the normal operation of the GIS equipment and the life safety of operation and maintenance personnel are guaranteed; meanwhile, the microcontroller automatically judges the running state of the fan according to the running current value of the fan detected by the fan current sensor, finds the fan fault in time and sends an alarm signal to inform operators of maintenance or emergency treatment; the embodiment can realize the functions of automatically starting the fan before operation and maintenance personnel enter, detecting and alarming faults of the fan, detecting and emergency fire and the like.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a prefabricated cabin ventilation system of transformer substation GIS which characterized in that includes:
the system comprises a gas sensor, a temperature and humidity sensor, an infrared sensor, a fan current sensor, a microcontroller, a fan, an air conditioner and a dustproof ventilation device;
the signal input end of the microcontroller is connected with the gas sensor, the temperature and humidity sensor, the infrared sensor and the fan current sensor, and the signal output end of the microcontroller is connected with the fan, the air conditioner and the dustproof ventilation device;
the gas sensor detects a gas concentration value in the GIS chamber of the prefabricated cabin, the temperature and humidity sensor detects temperature and humidity data in the GIS chamber of the prefabricated cabin, the infrared sensor detects whether a person enters the GIS chamber of the prefabricated cabin, and the fan current sensor detects a working current value of the fan;
the microcontroller controls the starting and stopping of the fan, the air conditioner and the dustproof ventilation device in a linkage manner according to the data of the gas sensor, the infrared sensor and the temperature and humidity sensor; monitoring whether the gas concentration and the temperature and humidity in the GIS chamber of the prefabricated cabin are abnormal or not; judging whether the fan breaks down or not according to the data of the fan current sensor; when the data of gas concentration and temperature and humidity are abnormal or the fan fails, an alarm signal is sent out so as to be convenient for timely maintenance;
the fan is used for ventilating and adjusting the gas concentration in the prefabricated cabin GIS room, the air conditioner is used for ventilating and adjusting the temperature and humidity in the prefabricated cabin GIS room, and the dustproof ventilating device filters dust in the prefabricated cabin GIS room and ventilates.
2. The substation GIS prefabricated cabin ventilation system of claim 1, further comprising:
a fire detector for monitoring a fire signal;
the fire detector is connected with the signal input end of the microcontroller, and the microcontroller automatically closes the fan, the air conditioner and the dustproof ventilation device according to a fire signal monitored by the fire detector.
3. The substation GIS prefabricated cabin ventilation system of claim 1, further comprising:
and the monitoring center is used for receiving the alarm signal and is connected with the signal output end of the microcontroller.
4. The substation GIS prefabricated cabin ventilation system of claim 1, wherein the gas sensor comprises at least:
SF 6 sensor and O 2 Sensors respectively for detecting SF in the GIS room of the prefabricated cabin 6 、O 2 The concentration value of (c).
5. The substation GIS prefabricated cabin ventilation system of claim 1, wherein the microcontroller is a PC.
6. A ventilation control method for a GIS prefabricated cabin of a transformer substation is characterized by being applied to a ventilation system of the GIS prefabricated cabin of the transformer substation, and the method comprises the following steps:
controlling the starting and stopping of the fan and the dustproof ventilation device in a linkage manner according to data detected by the gas sensor and the infrared sensor so that the gas concentration in the GIS chamber of the prefabricated cabin meets a preset gas concentration limit value;
controlling the start and stop of an air conditioner according to temperature and humidity data detected by a temperature and humidity sensor so as to enable the temperature and humidity in a GIS room of the prefabricated cabin to meet a preset temperature and humidity limit value;
judging whether the fan breaks down or not according to the fan working current detected by a fan current sensor;
and when the gas concentration does not meet a preset gas concentration limit value or the temperature and humidity data does not meet a preset temperature and humidity limit value or the fan breaks down, sending an alarm signal.
7. The ventilation control method for the substation GIS prefabricated cabin according to claim 6, characterized by further comprising:
and when a fire signal sent by the fire detector is monitored, the fan, the air conditioner and the dustproof ventilation device are closed.
8. The ventilation control method for the substation GIS prefabricated cabin according to claim 6, characterized in that the gas sensor at least comprises: detection of SF 6 SF of concentration value 6 Sensor and detection O 2 O of concentration value 2 The sensor, the data linkage control fan that detects according to gas sensor, infrared sensor stops with opening of dustproof ventilation unit and includes:
when detected SF 6 When the concentration value is greater than or equal to a preset first starting threshold value, starting the fan and the dustproof ventilation device after preset starting delay; when detected SF 6 When the concentration value is smaller than a preset first shutdown threshold value, closing the fan and the dustproof ventilation device; or
When detected O 2 When the concentration value is less than or equal to a preset second starting threshold value, starting the fan and the dustproof ventilation device after preset starting delay; when detected O 2 When the concentration value is greater than a preset second shutdown threshold value, closing the fan and the dustproof ventilation device; or
When the infrared sensor detects that a person enters the GIS prefabricated cabin, the fan and the dustproof ventilation device are started, and the fan and the dustproof ventilation device are closed after the infrared sensor continuously operates for a preset time.
9. The ventilation control method for the GIS prefabricated cabin of the transformer substation according to claim 6, wherein the step of controlling the start and stop of the air conditioner according to the temperature and humidity data detected by the temperature and humidity sensor comprises the following steps:
when the detected temperature and humidity data reach a preset third starting threshold value, starting the air conditioner, and adjusting a temperature value and air volume according to the temperature and humidity data;
and when the detected temperature and humidity data reach a preset third shutdown threshold value, closing the air conditioner.
10. The ventilation control method for the GIS prefabricated cabin of the transformer substation according to claim 6, wherein judging whether the fan fails according to the working current of the fan detected by the fan current sensor comprises the following steps:
and when the detected fan working current data is larger than or equal to a preset fan current threshold value, judging that the fan normally operates, otherwise, judging that the fan breaks down.
CN202210743430.7A 2022-06-28 2022-06-28 Ventilation system for GIS prefabricated cabin of transformer substation and control method Pending CN115000854A (en)

Priority Applications (1)

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CN202210743430.7A CN115000854A (en) 2022-06-28 2022-06-28 Ventilation system for GIS prefabricated cabin of transformer substation and control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210743430.7A CN115000854A (en) 2022-06-28 2022-06-28 Ventilation system for GIS prefabricated cabin of transformer substation and control method

Publications (1)

Publication Number Publication Date
CN115000854A true CN115000854A (en) 2022-09-02

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