CN103149910A - Ventilation intelligent control system in transformer substation room - Google Patents

Abstract

The invention relates to a substation indoor ventilation intelligent control system, comprising a control device, a power cabinet of at least one control and detection control device; the control device is connected with a capacitor state criterion device, a debugging device, a monitoring system, and a WEB server; the control device The device is provided with a control panel that controls the operation of the controlled indoor ventilation equipment and ventilation equipment of the substation; the advantages of the present invention: the capacitor state criterion device, debugging device, monitoring system, and WEB server connected to the control device can control the temperature of the controlled indoor temperature of the substation. Humidity automatic monitoring and control, realizing the intelligent control and networking remote monitoring and monitoring of the temperature and humidity of the indoor capacitors in each substation. The system reasonably starts the operation of the fan, reduces the temperature and humidity of the indoor environment, realizes the operation of capacitors and other equipment under limited environmental requirements, ensures the normal operation life of capacitors and other equipment, reduces the energy consumption and noise pollution of the invalid operation of the fan, and prolongs the life of the fan. service life.

Description

Intelligent Control System of Indoor Ventilation in Substation

technical field

The invention relates to an intelligent control system for indoor ventilation of a substation.

Background technique

Reactive power compensation capacitors in most substations are installed indoors and ventilators are installed in the capacitor room. At present, the ventilation system basically relies on manual activation, and its function is single. It is only used for smoke emission in the event of an accident in the capacitor room. When the operating environment temperature of the capacitor exceeds the technical requirements limited by the product (not exceeding 40°C), it cannot perform ventilation and exchange. cooling and dehumidifying effect. In operation practice, the ambient temperature of the capacitor room in summer often exceeds 40°C (even reaches 45°C) when the fan stops running. When a large number of substations adopt the unattended mode, it is already a necessary means to use automation technology to effectively monitor and control the temperature and humidity of the indoor capacitor environment.

The temporary method is to add a time controller and set the ventilator to be turned on from 8:00 to 22:00 every day. This method can only play a small random role in the summer period. In this period, regardless of whether the capacitor is running or not, and whether the room temperature exceeds the limit, the fan is driven to run. Although the fan is running in the time control period, the capacitor does not necessarily run. The temperature does not necessarily exceed the limit, and it does not play a substantial role in ventilation, commutation and cooling under the condition of capacitor operation.

The time control method has problems such as mechanical rigidity of the control strategy, ineffectiveness of other time periods, blind start of the time control, increased fan energy consumption and wear, and shortened fan life.

Contents of the invention

The technical problem to be solved by the present invention is that there is no automatic monitoring and control means for the temperature and humidity of the indoor environment such as the capacitor room of the existing substation, and the operation of the fan is poorly targeted, which not only increases the noise pollution and power loss caused by the wear and tear of the fan and the invalid operation of the fan, and shortens the temperature and humidity of the fan. life, and it is impossible to guarantee that products such as capacitors can operate under the environmental requirements limited by the regulations, which affects the normal operating life of capacitors. In order to solve this problem, an intelligent control system for substation indoor ventilation has been developed.

In order to solve the above-mentioned technical problems, the present invention is achieved through the following technical proposals: a substation indoor ventilation intelligent control system, including a control device, a power cabinet for at least one control and detection control device; the control device is connected with a capacitor state judging device , a debugging device, a monitoring system, and a WEB server; the monitoring system is connected to the WEB server; the control device is provided with a control panel for controlling the operation of the controlled indoor ventilation equipment and ventilation equipment of the substation.

Preferably, the capacitor state criterion device is provided with several detection modules that are convenient for detecting the real-time operation state of the capacitor, so as to achieve real-time detection of the capacitor state, and the data detection is comprehensive, true and effective.

Preferably, the control device is connected to the monitoring system through RS485, which can realize information management such as networking remote monitoring and monitoring of multiple sites, has strong anti-interference ability, reliable connection, and good use effect.

Preferably, the control device is connected to the WEB server through Ethernet, so as to realize networked remote monitoring and monitoring of multiple sites.

Preferably, the control device is connected to the power cabinet through a cable; the power cabinet is provided with a main power input switch and a power detection module connected to the power input main switch; the power cabinet is provided with a control module for controlling the start and stop of the fan And fan overcurrent protection, good control effect, high stability, safe and reliable.

Preferably, the control module is a manual control module and an SSR control module, and the control effect is good.

Preferably, the control device is a PLC control device, which has good reliability, strong anti-interference ability, comprehensive functions and convenient installation.

Preferably, the control device is equipped with an emergency exhaust module for starting the operation of the controlled indoor fan of the substation, which can effectively exhaust the polluted gases such as smoke generated in the room.

Preferably, the control device is provided with a flashing signal lamp, an alarm device, and a temperature and humidity display module. Through the detection of temperature and humidity and data transmission, the alarm and light flashing are performed in real time for the temperature and humidity in the controlled room to exceed the limit, and the use effect is good. , strong practicability and good safety performance.

Preferably, the control device is also provided with an expandable network interface, which can realize network communication and intelligent control, thereby improving practicability.

In summary, the advantages of the present invention: the capacitor state criterion device, debugging device, monitoring system, and WEB server connected by the control device can automatically monitor and control, adjust, monitor, and check the temperature and humidity of the controlled indoor capacitor environment of the substation , Realize multifunctional information management such as intelligent control of temperature and humidity in controlled rooms such as capacitor rooms of substations connected to the network monitoring and remote monitoring and monitoring.

The system can reasonably start the operation of the fan, effectively reduce the temperature and humidity in the capacitor room, improve the environmental conditions in the controlled room, improve the operating environment conditions of capacitors and other products, realize the operation of capacitors in an environment limited by products, and improve the performance of capacitors. The safety and stability of equipment such as capacitors in operation ensures the normal operating life of equipment such as capacitors, thereby ensuring the role of capacitor operation in improving power quality and economic efficiency of power supply. At the same time, it reduces the power loss and noise pollution caused by the invalid operation of the fan, and prolongs the service life of the fan.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is a structural block diagram of the substation indoor ventilation intelligent control system of the present invention.

Detailed ways

As shown in Figure 1, the indoor ventilation intelligent control system of a substation includes a control device 1, a power cabinet 2 for at least one control and detection control device 1; the control device 1 is connected with a capacitor state criterion device 3, a debugging device 5, Monitoring system 6, WEB server 4; the monitoring system 6 is connected to the WEB server 4, the control device 1 is provided with a control panel for controlling the operation of the controlled indoor ventilation or ventilation equipment in the substation, and the capacitor state judging device 3 There are several detection modules 31 which are convenient for detecting the real-time operation state of the capacitor. It also includes a temperature and humidity sensor for detecting the temperature and humidity of the capacitor environment, so as to achieve real-time detection of the state of the capacitor and the temperature and humidity of the capacitor environment. The data detection is comprehensive, true and effective. The control device 1 and the monitoring system 6 are connected through RS485, which can realize information management such as networking remote monitoring and monitoring of multiple sites, strong anti-interference ability, reliable connection, and good use effect. The control device 1 and the WEB server 4 Through the Ethernet connection, the remote monitoring and monitoring of multiple sites can be realized. The control device 1 is connected to the power cabinet 2 through a cable; The power detection module 22 connected to the switch 21; the power cabinet 2 is provided with a control module 23 for controlling the start and stop of the fan and a fan overcurrent protection 24, the control effect is good, the operation is stable, safe and reliable, and the control module 23 is manually controlled Module and SSR control module, the control effect is good. The control device 1 is a PLC control device, which has good reliability, strong anti-interference ability, comprehensive functions and convenient installation. The control device 1 is equipped with a start-up substation controlled indoor fan operation The emergency exhaust module 11 can effectively exhaust indoor smog and other dirty gases. The control device 1 is equipped with a flashing signal light 12, an alarm device 13, and a temperature and humidity display module 14. Through the detection and data transmission of temperature and humidity, when When the temperature and humidity in the controlled room of the substation exceed the limit, an alarm and light flashing are performed. The use effect is good, the practicability is strong, and it is safe and reliable. The control device 1 is provided with an expandable network interface 15, which can realize network communication and intelligent control, and realize Automatic functions such as remote signaling, remote control, and remote monitoring are performed on the temperature and humidity in the controlled rooms of each substation that is connected to the network monitoring. The control device 1 also has power-off data storage, program self-recovery, device self-diagnosis, and operation parameter setting. Fixed value, historical data and other form export functions, various indicator lights to indicate the running status and other functions.

The temperature and humidity in the controlled room of the substation is collected by the temperature and humidity sensor, and the temperature and humidity signal sensed by the temperature and humidity sensor is sent to the control device. When the ambient temperature (humidity) is higher than the set value, the control device outputs an instruction, Start the ventilation system to discharge the indoor hot air to achieve the effect of adjusting (lowering) the indoor temperature. You can also start other ventilation or tide-removing equipment to achieve the effect of cooling or driving the tide; remotely monitor the temperature of the controlled environment through the monitoring system Humidity, over-temperature alarm, fan operation, fan failure, wind control power failure and other operation monitoring signals. When a smoke alarm is detected in the controlled room, the control device activates the emergency exhaust module, drives the fan to run, and exhausts indoor smoke and other dirty gases. The WEB server can also display the actual conditions such as the temperature and humidity data, capacitor status, power supply status of the power cabinet and fan speed of the controlled indoor detection point environment of each substation in the network through the WEB server; the system can be debugged through a laptop computer.

Through the capacitor state criterion device, debugging device, monitoring system, and WEB server connected to the control device, the temperature and humidity in the controlled room of the substation are automatically monitored, controlled, adjusted, monitored, and checked, and the environmental temperature of each capacitor connected to the network monitoring is realized. Humidity intelligent control and remote monitoring monitoring function. The system can reasonably start the operation of the fan to reduce the ambient temperature and humidity in the controlled room, effectively improve the operating environment conditions of capacitors and other equipment, realize the operation of capacitors and other equipment in an environment limited by the product, and ensure the normal operation life of capacitors and other equipment , which improves the safety and stability of capacitor equipment in operation, thereby ensuring the role of capacitor operation in improving power quality and economic efficiency of power supply. At the same time, it reduces the power loss and noise pollution caused by the unnecessary operation of the fan, and prolongs the normal service life of the fan.

Claims (10)

1. An intelligent control system for substation indoor ventilation, characterized in that: a power cabinet (2) including a control device (1), at least one control and detection control device (1); the control device (1) is connected to a capacitor state judge According to the device (3), debugging device (5), monitoring system (6), WEB server (4); the monitoring system (6) is connected to the WEB server (4); the control device (1) is provided with a control Control panel for controlling the operation of indoor ventilation equipment and ventilation equipment in substations. 2. The substation indoor ventilation intelligent control system according to claim 1, characterized in that: the capacitor state criterion device (3) is provided with a detection module (31) for detecting the real-time operation state of the capacitor. 3. The substation indoor ventilation intelligent control system according to claim 1, characterized in that: the control device (1) is connected to the monitoring system (6) through RS485. 4. The substation indoor ventilation intelligent control system according to claim 1, characterized in that: the control device (1) is connected to the WEB server (4) via Ethernet. 5. The substation indoor ventilation intelligent control system according to claim 1, characterized in that: the control device (1) is connected to the power cabinet (2) through a cable; the power cabinet (2) is provided with a power input A main switch (21), a power detection module (22) connected to the power input main switch (21); the power cabinet (2) is provided with a control module (23) for controlling the start and stop of the fan and a fan overcurrent protection (24 ). 6. The substation indoor ventilation intelligent control system according to claim 5, characterized in that: the control module (23) is a manual control module and an SSR control module. 7. The substation indoor ventilation intelligent control system according to any one of claims 1 to 5, characterized in that the control device (1) is a PLC control device. 8. The intelligent control system for substation indoor ventilation according to claim 7, characterized in that: the control device (1) is provided with an emergency exhaust module (11) for starting the operation of the controlled indoor fans of the substation. 9. The substation indoor ventilation intelligent control system according to claim 7, characterized in that: the control device (1) is provided with a flashing signal light (12), an alarm device (13), and a temperature and humidity display module (14). 10. The substation indoor ventilation intelligent control system according to claim 7, characterized in that: the control device (1) is provided with an expandable network interface (15).

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