CN105391166A - Transformer station monitoring system and monitoring method thereof - Google Patents

Abstract

The invention discloses a transformer station monitoring system and a monitoring method thereof. The monitoring system comprises a central controller, a transformer station indoor fire detection system, and a transformer station indoor leakage detection system. The central controller is connected with the transformer station indoor fire detection system and the transformer station indoor leakage detection system. The transformer station indoor fire detection system consists of a smoke detection module, an infrared temperature detection module, and a fire extinguishing switch motion module, wherein the modules are connected with the central controller; and the fire extinguishing switch motion module is connected with a fire extinguishing apparatus. The transformer station indoor leakage detection system includes a leakage detection module and a relay module, wherein the leakage detection module and the relay module are connected with the central controller; the leakage detection module is used for detecting leakage information of an indoor incoming and outgoing line unit of the transformer station and transmitting the information to the central controller; and the central controller receives the leakage information and then sends a control signal to drive the relay module to cut off the power supply.

Description

A substation monitoring system and method thereof

technical field

The invention belongs to the field of substation monitoring, in particular to a substation monitoring system and a method thereof.

Background technique

As an integral part of the entire power transmission and transformation system, the substation plays an important role in linking the past and the future, and the fire protection of the substation directly affects its safe operation. In response to emergencies, it is very important whether the fire protection system can be put into operation normally to suppress and extinguish the initial fire. With the development of science and technology and the improvement of automation, as an important hub of power transmission and transformation, substations are developing in the direction of unattended. This puts forward higher requirements for the safety of the substation.

The existing substation monitoring system has the following problems: (1) the indoor fire and leakage in the substation cannot be detected at the same time; (2) the fire and leakage information detected in the substation cannot be remotely monitored and warned in real time.

Contents of the invention

In order to solve the shortcomings of the prior art, the present invention provides a substation monitoring system and its method. The monitoring system not only has fire prevention and fire extinguishing functions, but also has real-time detection of leakage, and long-distance communication to transmit real-time data to the host computer, which is convenient for query and evidence collection after the accident.

To achieve the above object, the present invention adopts the following technical solutions:

A substation monitoring system, comprising: a central controller, the central controller is respectively connected to a substation indoor fire detection system and a substation indoor leakage detection system;

The indoor fire detection system of the power station includes a smoke detection module, an infrared temperature detection module and a fire extinguishing switch action module respectively connected to the central controller, and the fire extinguishing switch action module is connected to the fire extinguishing device;

The smoke detection module is used to detect smoke information in the substation room and transmit it to the central controller. The infrared temperature detection module is used to detect the open fire temperature information in the substation room and transmit it to the central controller. The central controller is used to send control signals to control the fire switch action module Drive the action of the fire extinguishing device;

The indoor leakage detection system of the substation includes a leakage detection module and a relay module respectively connected to the central controller. After receiving the leakage information, a control signal is sent to drive the relay module to cut off the power supply.

The central controller is also connected with the upper computer through the wireless network module.

The smoke detection module is a smoke sensor.

The smoke sensor includes a smoke detection head, the smoke detection head is connected to the input end of the voltage comparator, the output end of the voltage comparator is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the central controller.

The central controller is also connected to a cloud server, and the cloud server is connected to mobile terminals of substation personnel.

The infrared temperature detection module is an infrared temperature detector.

The central controller is also connected with the memory.

The central controller is also connected with the alarm module.

The leakage detection module includes:

The first output port of the leakage detection coil is connected in series with resistor R11, resistor R4 and resistor R2 in sequence, followed by +5V power supply;

The second output port of the leakage detection coil is connected in series with resistor R12, resistor R3 and resistor R1, followed by +5V power supply;

The third output port of the leakage detection coil is connected to the No. 2 port of the leakage protector VG54123;

The fourth output port of the leakage detection coil is connected to the No. 1 port of the leakage protector VG54123;

A parallel loop of a resistor R10 and a capacitor C4 connected in series between the third output port of the leakage detection coil and the fourth output port of the leakage detection coil;

The No. 11 port of the leakage protector VG54123 is connected to the 12V power supply after the series resistor R13, and the No. 11 port of the leakage protector VG54123 is connected to the ground after the series capacitor C5;

The No. 4 port of leakage protector VG54123 is connected to No. 5 port, and No. 4 port is connected to the collector of triode Q6, and the base of triode Q6 is connected to the reset signal after series resistor R8; the series capacitor C3 between the collector and emitter of triode Q6 ; The emitter of the triode Q6 is grounded;

The No. 7 port of the leakage protector VG54123 is connected to the leakage detection signal in series with the resistor R9 and the SMD transistor in sequence; one end of the resistor R14 is connected between the resistor R9 and the SMD transistor, and the other end is grounded;

The collector of the transistor Q1 is connected to the +5V power supply, the base is connected between the resistors R2 and R4, the emitter of the transistor Q1 is connected in series with the collector of the transistor Q4, and the base of the transistor Q4 is connected in series with the resistor R7 followed by the excitation signal B; The emitter of Q4 is grounded;

The collector of the transistor Q2 is connected to the +5V power supply, the base is connected between the resistors R1 and R3, the emitter of the transistor Q2 is connected in series with the collector of the transistor Q3, and the base of the transistor Q3 is connected in series with the resistor R5 followed by the excitation signal A; The emitter of Q3 is grounded;

The collector of the transistor Q5 is connected between the resistor R7 and the transistor Q4, the base of the transistor Q5 is connected to the excitation signal A after being connected in series with the resistor R6; the emitter of the transistor Q5 is grounded.

A monitoring method for a substation monitoring system, comprising:

Step (1): The smoke detection module and the infrared temperature detection module respectively detect the smoke information and the open fire temperature information in the substation and transmit them to the central controller.

Step (2): The central controller analyzes the received smoke information and open flame temperature information to determine whether a fire has occurred. If so, the central controller sends a control signal to control the fire extinguishing switch action module to drive the fire extinguishing device; otherwise, the fire extinguishing switch action module does not At the same time, the central controller also receives leakage information, and sends out a control signal to drive the relay module to cut off the power supply.

The beneficial effects of the present invention are:

(1) The present invention detects the fire and leakage information in the substation room through the substation indoor fire detection system and the substation indoor leakage detection system respectively connected to the central controller, and analyzes these information for fire prevention and power outage processing;

(2) The central controller of the present invention also uploads the received fire and leakage information in the substation room to the cloud server for storage, so that the fire information in the substation can be conveniently inquired remotely, and the cloud server is also connected with the mobile terminal of the substation personnel Connected to achieve the purpose of timely notifying substation personnel to deal with substation disasters.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the electrical schematic diagram of the smoke sensor of the present invention;

Fig. 3 is a schematic diagram of the leakage detection module of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

Fig. 1 is a schematic diagram of the overall structure of the present invention, the substation monitoring system of the present invention includes a central controller, and the central controller is connected to the substation indoor fire detection system and the substation indoor leakage detection system respectively;

The indoor fire detection system of the power station includes a smoke detection module, an infrared temperature detection module and a fire extinguishing switch action module respectively connected to the central controller, and the fire extinguishing switch action module is connected to the fire extinguishing device;

The smoke detection module is used to detect smoke information in the substation room and transmit it to the central controller. The infrared temperature detection module is used to detect the open fire temperature information in the substation room and transmit it to the central controller. The central controller is used to send control signals to control the fire switch action module Drive the action of the fire extinguishing device;

The indoor leakage detection system of the substation includes a leakage detection module and a relay module respectively connected to the central controller. After receiving the leakage information, a control signal is sent to drive the relay module to cut off the power supply.

As shown in Figure 1, the central controller uses TI's 32-bit floating-point DSP, TMS320F28335 as the control core, and the central controller is also connected with the host computer. The central controller is connected with the upper computer through the wireless network module.

The fire extinguishing switch action module is connected with the fire extinguishing device in the substation, and its function is to drive the fire extinguishing device to perform fire extinguishing action.

The wireless network module in the substation monitoring system of the present invention adopts a wireless WiFi communication module, and the wireless WiFi communication module is connected with a central controller through a wireless interface.

The smoke detection module of the present invention adopts a smoke sensor. As shown in Figure 2, the smoke sensor includes a smoke detection head, the smoke detection head is connected to the input end of the voltage comparator, the output end of the voltage comparator is connected to the input end of the operational amplifier, and the output end of the operational amplifier is connected to the central controller connect.

In Fig. 2, the operational amplifier U18A is connected in series with the resistor R45 connected to the negative input terminal of the operational amplifier U18A, R47 connected in series with the positive input terminal of the operational amplifier U18A, R51 connected in series with the output terminal of the operational amplifier U18A, and connected in parallel to the negative input terminal of the operational amplifier U18A The resistors at the terminal and the output terminal form a voltage comparator. Wherein, the R47 terminal of the positive input terminal of the operational amplifier U18A is connected to the reference voltage.

In order to prevent the input voltage of the operational amplifier U18A from being too large, a voltage divider resistor is also connected at the connection point between the smoke detector head and the resistor R45 at the negative input terminal of the operational amplifier U18A. The magnitude of the voltage signal converted from the voltage signal.

The central controller is also connected with the memory, and is used for backing up and storing the received information in the substation.

The infrared temperature detection module of the present invention includes an infrared detector and a temperature sensor, both of which are connected with a central controller.

Wherein, the central controller is also connected with the alarm module, which is used for alarming the fire and electric leakage in the substation room.

As shown in Figure 3, the leakage detection module includes:

The first output port of the leakage detection coil is connected in series with resistor R11, resistor R4 and resistor R2 in sequence, followed by +5V power supply;

The second output port of the leakage detection coil is connected in series with resistor R12, resistor R3 and resistor R1, followed by +5V power supply;

The third output port of the leakage detection coil is connected to the No. 2 port of the leakage protector VG54123;

The fourth output port of the leakage detection coil is connected to the No. 1 port of the leakage protector VG54123;

A parallel loop of a resistor R10 and a capacitor C4 connected in series between the third output port of the leakage detection coil and the fourth output port of the leakage detection coil;

The No. 11 port of the leakage protector VG54123 is connected to the 12V power supply after the series resistor R13, and the No. 11 port of the leakage protector VG54123 is connected to the ground after the series capacitor C5;

The No. 4 port of leakage protector VG54123 is connected to No. 5 port, and No. 4 port is connected to the collector of triode Q6, and the base of triode Q6 is connected to the reset signal after series resistor R8; the series capacitor C3 between the collector and emitter of triode Q6 ; The emitter of the triode Q6 is grounded;

The No. 7 port of the leakage protector VG54123 is connected to the leakage detection signal in series with the resistor R9 and the SMD transistor in sequence; one end of the resistor R14 is connected between the resistor R9 and the SMD transistor, and the other end is grounded;

The collector of the transistor Q1 is connected to the +5V power supply, the base is connected between the resistors R2 and R4, the emitter of the transistor Q1 is connected in series with the collector of the transistor Q4, and the base of the transistor Q4 is connected in series with the resistor R7 followed by the excitation signal B; The emitter of Q4 is grounded;

The collector of the transistor Q2 is connected to the +5V power supply, the base is connected between the resistors R1 and R3, the emitter of the transistor Q2 is connected in series with the collector of the transistor Q3, and the base of the transistor Q3 is connected in series with the resistor R5 followed by the excitation signal A; The emitter of Q3 is grounded;

The collector of the transistor Q5 is connected between the resistor R7 and the transistor Q4, the base of the transistor Q5 is connected to the excitation signal A after being connected in series with the resistor R6; the emitter of the transistor Q5 is grounded.

When working, the central controller controls the "excitation signal A" and "excitation signal B", and it generally takes 4 cycles to generate the alternating signal); output the reset signal to reset the VG54123, read the leakage detection signal, every interval (usually 1 second) Repeat the above steps.

The monitoring method of the substation monitoring system of the present invention includes:

Step (1): The smoke detection module and the infrared temperature detection module respectively detect the smoke information and the open fire temperature information in the substation and transmit them to the central controller.

Step (2): The central controller analyzes the received smoke information and open flame temperature information to determine whether a fire has occurred. If so, the central controller sends a control signal to control the fire extinguishing switch action module to drive the fire extinguishing device; otherwise, the fire extinguishing switch action module does not At the same time, the central controller also receives leakage information, and sends out a control signal to drive the relay module to cut off the power supply.

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (10)

1. A substation monitoring system, characterized in that, comprising: a central controller, the central controller is connected with the substation indoor fire detection system and the substation indoor leakage detection system respectively; The indoor fire detection system of the power station includes a smoke detection module, an infrared temperature detection module and a fire extinguishing switch action module respectively connected to the central controller, and the fire extinguishing switch action module is connected to the fire extinguishing device; The smoke detection module is used to detect smoke information in the substation room and transmit it to the central controller. The infrared temperature detection module is used to detect the open fire temperature information in the substation room and transmit it to the central controller. The central controller is used to send control signals to control the fire switch action module Drive the action of the fire extinguishing device; The indoor leakage detection system of the substation includes a leakage detection module and a relay module respectively connected to the central controller. After receiving the leakage information, a control signal is sent to drive the relay module to cut off the power supply. 2. A substation monitoring system according to claim 1, characterized in that the central controller is also connected to the host computer through a wireless network module. 3. The substation monitoring system according to claim 1, wherein the smoke detection module is a smoke sensor. 4. A kind of substation monitoring system as claimed in claim 3, is characterized in that, described smoke sensor comprises smoke detection head, and described smoke detection head is connected with the input end of voltage comparator, and the output end of voltage comparator and operation The input terminal of the amplifier is connected, and the output terminal of the operational amplifier is connected with the central controller. 5 . The substation monitoring system according to claim 1 , wherein the central controller is also connected to a cloud server, and the cloud server is connected to mobile terminals of substation personnel. 6. A substation monitoring system as claimed in claim 1, wherein the infrared temperature detection module is an infrared temperature detector. 7. A substation monitoring system according to claim 1, characterized in that said central controller is also connected to a memory. 8. The substation monitoring system according to claim 1, wherein the central controller is also connected to an alarm module. 9. A kind of substation monitoring system as claimed in claim 1, is characterized in that, described electric leakage detection module comprises: The first output port of the leakage detection coil is connected in series with resistor R11, resistor R4 and resistor R2 in sequence, followed by +5V power supply; The second output port of the leakage detection coil is connected in series with resistor R12, resistor R3 and resistor R1, followed by +5V power supply; The third output port of the leakage detection coil is connected to the No. 2 port of the leakage protector VG54123; The fourth output port of the leakage detection coil is connected to the No. 1 port of the leakage protector VG54123; A parallel loop of a resistor R10 and a capacitor C4 connected in series between the third output port of the leakage detection coil and the fourth output port of the leakage detection coil; The No. 11 port of the leakage protector VG54123 is connected to the 12V power supply after the series resistor R13, and the No. 11 port of the leakage protector VG54123 is connected to the ground after the series capacitor C5; The No. 4 port of leakage protector VG54123 is connected to No. 5 port, and No. 4 port is connected to the collector of triode Q6, and the base of triode Q6 is connected to the reset signal after series resistor R8; the series capacitor C3 between the collector and emitter of triode Q6 ; The emitter of the triode Q6 is grounded; The No. 7 port of the leakage protector VG54123 is connected to the leakage detection signal in series with the resistor R9 and the SMD transistor in sequence; one end of the resistor R14 is connected between the resistor R9 and the SMD transistor, and the other end is grounded; The collector of the transistor Q1 is connected to the +5V power supply, the base is connected between the resistors R2 and R4, the emitter of the transistor Q1 is connected in series with the collector of the transistor Q4, and the base of the transistor Q4 is connected in series with the resistor R7 followed by the excitation signal B; The emitter of Q4 is grounded; The collector of the transistor Q2 is connected to the +5V power supply, the base is connected between the resistors R1 and R3, the emitter of the transistor Q2 is connected in series with the collector of the transistor Q3, and the base of the transistor Q3 is connected in series with the resistor R5 followed by the excitation signal A; The emitter of Q3 is grounded; The collector of the transistor Q5 is connected between the resistor R7 and the transistor Q4, the base of the transistor Q5 is connected to the excitation signal A after being connected in series with the resistor R6; the emitter of the transistor Q5 is grounded. 10. A monitoring method of the substation monitoring system as claimed in claim 1, characterized in that, comprising: Step (1): The smoke detection module and the infrared temperature detection module respectively detect the smoke information and the open fire temperature information in the substation and transmit them to the central controller. Step (2): The central controller analyzes the received smoke information and open flame temperature information to determine whether a fire has occurred. If so, the central controller sends a control signal to control the fire extinguishing switch action module to drive the fire extinguishing device; otherwise, the fire extinguishing switch action module does not At the same time, the central controller also receives leakage information, and sends out a control signal to drive the relay module to cut off the power supply.