CN207233153U - A kind of supervisory control of substation early warning system - Google Patents

Abstract

The utility model discloses a substation monitoring and early warning system, which comprises a waterproof early warning device, a fire early warning device, a moisture-proof early warning device, a main control device and terminal equipment; the above three early warning devices are respectively connected with the main control device, and the main control device and the terminal equipment connection; the waterproof early warning device detects the liquid level signal and generates the first alarm signal and sends it to the main control device; the fire early warning device detects smoke and temperature signals and generates a second alarm signal and sends it to the main control device; the moisture early warning device detects the temperature and humidity signal and generates The third alarm signal is sent to the main control device, and the main control device receives the alarm signal and sends it to the terminal equipment. The utility model sends the alarm signals sent by the three early warning devices to the terminal equipment for alarming through the main control device, so as to achieve the effect of unified management and control of the substation equipment and improve the processing efficiency of the substation equipment.

Description

A substation monitoring and early warning system

technical field

The utility model relates to the technical field of monitoring and early warning, in particular to a substation monitoring and early warning system.

Background technique

The drainage speed of the substation equipment area is slow, and if there is heavy rain, there will be serious water accumulation; there are high fire hazards in cable trenches, shafts and other places, and the moisture in the substation equipment will be heavy after rainy and snowy weather. To ensure the safe and normal operation of substation equipment, the staff need to carry out frequent safety hazard investigations.

In the prior art, a manual method is generally used to check hidden dangers in the whole station, but the manual method has the problems of large manpower consumption and low work efficiency. In order to deal with accidents in time to improve work efficiency and ensure the normal operation of power equipment, the unified control and early warning of substation equipment has become an urgent problem to be solved.

Utility model content

The technical problem to be solved by the utility model is to provide a substation monitoring and early warning system aimed at solving the problems of large manpower consumption and low work efficiency in the investigation of substation hidden dangers in view of the above-mentioned deficiencies in the prior art. In order to solve the above technical problems, the technical solution adopted by the utility model is: a substation monitoring and early warning system is provided, including: waterproof early warning device, fire early warning device, moisture proof early warning device, main control device and terminal equipment;

The waterproof early warning device includes a first data collection unit and a first control unit, the first data collection unit is connected to the first control unit; the fire early warning device includes a second data collection unit and a second control unit, the The second data acquisition unit is connected to the second control unit; the moisture-proof early warning device includes a third data acquisition unit and a third control unit, and the third data acquisition unit is connected to the third control unit; the first control unit is the first An output terminal, the first output terminal of the second control unit and the third control unit are respectively connected to the main control device, and the main control device is connected to the terminal device;

The first data acquisition unit collects a liquid level signal, the first control unit generates a first alarm signal according to the liquid level signal, the main control device generates first alarm information according to the first alarm signal, and the The terminal device displays the first alarm information;

The second data acquisition unit collects smoke and temperature signals, the second control unit generates a second alarm signal according to the smoke and temperature signals, and the main control device generates second alarm information according to the second alarm signal, The terminal device displays the second alarm information;

The third data collection unit collects temperature and humidity signals, the third control unit generates a third alarm signal according to the temperature and humidity signals, the main control device generates third alarm information according to the third alarm signal, and the The terminal device displays the third alarm information;

Further, the waterproof warning device further includes: a first execution unit, the second output end of the first control unit is connected to the input end of the first execution unit;

The first control unit sends a first control command to the first execution unit, and the first execution unit performs pumping work according to the first control command.

Further, the moisture-proof early warning device further includes: a third execution unit, the second output end of the third control unit is connected to the input end of the third execution unit,

The third control unit sends a third control command to the third execution unit, and the third execution unit performs exhaust air heating according to the third control command.

Further, the first execution unit is a water pump.

Further, the third execution unit is an exhaust fan and a heater.

Further, the first data collection unit is a liquid level sensor, the second data collection unit is a smoke sensor and a temperature sensor, and the third data collection unit is a temperature sensor and a humidity sensor.

Further, the substation monitoring and early warning system further includes: a signal transmission device, the signal transmission device includes a signal transmitter and a signal receiver; the waterproof early warning device, the fire early warning device, the moisture early warning device They are respectively connected with the main control device through a signal transmission device.

Further, the first alarm information includes the first accident location number, the first specific location information and the first accident type; the main control device displays the first alarm information on the display screen; the main control The device sends the first alarm information to the terminal device.

Further, the second alarm information includes the second accident location number, the second specific location information and the second accident type; the main control device displays the second alarm information on the display screen; the main control device will The second alarm information is passed to the terminal device.

Further, the third alarm information includes the third accident location number, the third specific location information and the third accident type; the main control device displays the third alarm information on the display screen; the main control The device sends the third alarm information to the terminal device.

The beneficial effects produced by adopting the above technical scheme are: the utility model designs a substation monitoring and early warning system, uses the early warning device to collect water level, fire condition, temperature and humidity data for different equipment, and sends an alarm when the data reaches the threshold and an accident occurs signal, and then notify the staff of the alarm information in the form of a short message, so that the staff can know the specific location and accident information of the accident in the shortest time, achieve the effect of unified management and control of the substation equipment, and improve the handling of substation equipment Efficiency, to a greater extent guarantee the normal operation of power equipment.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the accompanying drawings that are required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the practical For some novel embodiments, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Fig. 1 is a schematic structural diagram of a substation monitoring and early warning system provided by Embodiment 1 of the present invention;

Fig. 2 is the realization flowchart of the waterproof early warning device provided by the first embodiment of the utility model;

Fig. 3 is the realization flowchart of the fire prevention early warning device provided by the utility model embodiment one;

Fig. 4 is the realization flowchart of the moisture-proof early warning device provided by the first embodiment of the utility model;

Fig. 5 is a schematic structural diagram of a substation monitoring and early warning system provided by Embodiment 2 of the present utility model.

Detailed ways

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The technical terms "first", "second" and the like in the specification and claims of the embodiments of the present utility model are used to distinguish similar objects, but not necessarily used to describe a specific sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.

It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and/or components, but does not exclude one or more other features. , whole, step, operation, element, component and/or the presence or addition of a collection thereof.

It should also be understood that the terminology used in the description of the present invention is only for the purpose of describing specific embodiments and is not intended to limit the present invention. As used in this specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural referents unless the context clearly dictates otherwise.

It should also be further understood that the term "and/or" used in the description of the utility model and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combination.

As used in this specification and the appended claims, the term "if" may be construed as "when" or "once" or "in response to determining" or "in response to detecting" depending on the context . Similarly, the phrase "if determined" or "if [the described condition or event] is detected" may be construed, depending on the context, to mean "once determined" or "in response to the determination" or "once detected [the described condition or event] ]” or “in response to detection of [described condition or event]”.

In order to illustrate the technical solution described in the utility model, the following specific examples will be used for illustration.

Embodiment one

First, please refer to FIG. 1 . FIG. 1 shows a schematic structural diagram of a substation monitoring and early warning system provided by Embodiment 1 of the present invention. As shown in FIG. 1 , the system of this embodiment includes a waterproof warning device 1 , a fire prevention warning device 2 , a moisture-proof warning device 3 , a main control device 4 and a terminal device 5 .

The waterproof early warning device 1 comprises a first data acquisition unit 11 and a first control unit 12, and the first data acquisition unit 11 is connected with the first control unit 12; the fire prevention early warning device 2 comprises a second data acquisition unit 21 and a second control unit 22, The second data acquisition unit 21 is connected with the second control unit 22; the moisture-proof early warning device 3 includes the third data acquisition unit 31 and the third control unit 32, and the third data acquisition unit 31 is connected with the third control unit 32; the first control unit 12 The first output terminal, the first output terminal of the second control unit 22 and the first output terminal of the third control unit 32 are respectively connected to the main control device 4, and the main control device 4 is connected to the terminal device 5;

In this embodiment, the waterproof early warning device 1 is installed in the substation where water is likely to accumulate. In the case of a sudden increase in rainfall in summer, some equipment areas such as cable trenches have a slow drainage speed, which is likely to cause water damage to equipment. The waterproof early warning device 1 collects the liquid level signal through its first data acquisition unit 11, and sends the collected liquid level signal to the first control unit 12. After the judgment of the alarm condition, the first control unit 12 sends out the first alarm condition. An alarm signal, and send this first alarm signal to the main control device 4, the main control device 4 generates the first alarm information by the first alarm signal through the preset information, and sends the first alarm information to the terminal equipment 5, to Make the terminal device 5 display the first alarm information. So that the staff can deal with the water accumulation in the equipment area of the substation in time.

The fire prevention warning device 2 is installed in the equipment or area with fire hazards in the substation. The substation is the hub of the power system. Once a fire occurs, the entire power grid will be disintegrated, seriously endangering the reliability of power supply. Electrical fires are caused by the combustion process. Therefore, fire prevention early warning devices 2 are installed in substations such as shafts, cable rooms, etc. where there are potential fire hazards. The fire early warning device 2 collects smoke and temperature signals through its second data acquisition unit 21, and collects The smoke and temperature signals received are sent to the second control unit 22, and the second control unit 22, after judging the alarm condition, sends a second alarm signal when the alarm condition is reached, and sends the second alarm signal to the main control device 4, the main control unit 22 The control device 4 generates the second alarm information from the second alarm signal through the preset information, and sends the second alarm information to the terminal device 5, so that the terminal device 5 displays the second alarm information. So that the staff can detect and deal with the fire in time.

The moisture-proof early warning device 3 is installed in the substation such as terminal boxes, central control cabinets and other equipment. After rainy and snowy weather, the moisture in the terminal boxes and central control cabinets is heavy, forming condensation, which may easily cause DC grounding, resulting in protection failure or malfunction. move, causing equipment accidents, so the moisture-proof early warning device 3 is installed in these devices, the moisture-proof early warning device 3 collects the temperature and humidity signal by its third data acquisition unit 31, and the temperature and humidity signal collected is sent to the third control unit 32, The 3rd control unit 32 is through the judgment of warning condition, reaches warning condition then sends the 3rd warning signal, and this 3rd warning signal is sent to main control device 4, and main control device 4 generates the 3rd warning signal by preset information the 3rd warning signal. and send the third alarm information to the terminal device 5, so that the terminal device 5 displays the third alarm information.

Fig. 2 shows the flow chart of the implementation of the waterproof early warning device provided by the embodiment of the present invention.

As shown in Fig. 2, in S101, the first data collection unit sends the collected liquid level signal to the first control unit.

Wherein the first data acquisition unit 11 can adopt a buoyancy type liquid level gauge and also can adopt a pressure sensor, for the example that the sensor adopts a liquid level gauge or a pressure sensor, the utility model is no longer described in detail, because these belong to conventional technologies, the present invention Those skilled in the art can realize it without creative work. The first data acquisition unit 11 collects the liquid level signal in real time, and sends the liquid level signal to the first control unit 12 .

In S102, the first control unit judges whether the liquid level exceeds a first threshold according to the liquid level signal; when the liquid level exceeds the first threshold, the first control unit generates a first alarm signal.

Wherein, the first control unit 12 is a single-chip microcomputer chip, the first control unit 12 receives the liquid level signal sent by the first data acquisition unit 11, and the first threshold is preset in the first control unit 12, when the collected liquid level signal When the first threshold is reached, the first control unit 12 generates a first alarm signal, and if the collected liquid level signal does not reach the threshold, it continues to receive the liquid level signal sent by the first data collection unit.

In S103, the first control unit sends a first alarm signal to the main control device.

The first control unit 12 sends the generated first alarm signal to the main control device 4 , so that the main control device 4 generates first alarm information and sends it to the terminal device 5 .

Fig. 3 shows the flow chart of the implementation of the fire prevention warning device provided by the embodiment of the present invention.

As shown in Fig. 3, in S201, the second data collection unit sends the collected smoke and temperature signals to the second control unit.

Wherein, the second data acquisition unit 21 is a smoke and temperature sensor, and the second data acquisition unit 21 collects smoke and temperature signals representing fire information in real time, and sends the smoke and temperature signals to the second control unit 22 .

In S202, the second control unit determines whether the smoke and temperature exceed a second threshold according to the smoke and temperature signals, and generates a second alarm signal when the smoke and temperature exceed the second threshold.

Wherein, the second control unit 22 is also a single-chip microcomputer chip. The second control unit 22 receives the smoke and temperature signals sent by the second data acquisition unit 21, and the second threshold is preset in the second control unit 22. When collecting smoke, When the temperature reaches the second threshold, the second control unit 22 generates a second alarm signal, and if the collected smoke and temperature signals do not reach the second threshold, continue to receive the smoke and temperature signals sent by the second data acquisition unit.

In S203, the second control unit sends a second alarm signal to the main control device.

The second control unit 22 sends the generated second alarm signal to the main control device 4 , so that the main control device 4 generates second alarm information and sends it to the terminal device 5 .

Fig. 4 shows the implementation flow chart of the moisture-proof early warning device provided by the embodiment of the present invention.

As shown in FIG. 4, in S301, the third data collection unit sends the collected temperature and humidity signals to the third control unit.

Wherein, the third data collection unit 31 is a temperature and humidity sensor, and the third data collection unit 31 collects temperature and humidity signals in real time, and sends the temperature and humidity signals to the third control unit 32 .

In S302, the third control unit judges whether the temperature and humidity exceed a third threshold according to the temperature and humidity signal, and when the temperature and humidity exceed the third threshold, the third control unit generates a third alarm signal.

Wherein, the third control unit 32 is also a single-chip microcomputer chip, the third control unit 32 receives the temperature and humidity signal sent by the third data acquisition unit 31, and the third threshold is preset in the third control unit 32, when the collected temperature and humidity reach When the third threshold is reached, the third control unit 32 generates a third alarm signal, and if the collected temperature and humidity signal does not reach the third threshold, it continues to receive the temperature and humidity signal sent by the third data collection unit.

In S303, the third control unit sends a third alarm signal to the main control device. ,

The third control unit 32 sends the generated third alarm signal to the main control device 4, so that the main control device generates the second alarm information and sends it to the terminal device 5.

Further, as an embodiment of the present utility model, the first alarm information generated by the main control device 4 includes the first accident location number, the first specific location information and the first accident type; The first alarm information is displayed on the display screen; the main control device sends the first alarm information to the terminal device.

The second alarm information includes the second accident location number, the second specific location information and the second accident type; the main control device displays the first alarm information on the display screen; The first alarm information is sent to the terminal device.

The third alarm information includes the third accident location number, the third specific location information and the third accident type; the main control device displays the first alarm information on the display screen; The first alarm information is sent to the terminal device.

In this embodiment, the main control device 4 mainly completes the following three functions, namely generating alarm information, displaying alarm information and sending short messages.

A first function of the master control device 4 generates an alarm message. The main control device 4 includes a database, which stores a substation equipment table and accident information, wherein the substation equipment table includes the serial number and corresponding location information of the substation equipment, and the accident information includes the accident number and type. According to the above-mentioned substation equipment table and accident information, the main control device converts the received first alarm signal into the first alarm information, converts the received second alarm signal into the second alarm information, and converts the received third alarm signal into The third alarm information, the first, second, and third alarm information all include the location number where the accident occurred, the specific location information of the equipment where the accident occurred, and the type of accident;

Furthermore, the first, second and third alarm signals respectively sent by the waterproof, fireproof and moisture-proof early warning devices of the present invention may include equipment numbers and fault type numbers, and the encoding method is "equipment number + fault type number". For example, number each equipment or each early warning device in an accident-prone area starting from 1, and the three types of waterproof, fireproof, and moisture-proof faults are numbered 1, 2, and 3 respectively. Each early warning device in each device has a unique alarm number. When fire information occurs in device 1, the alarm signal sent by its single-chip microcomputer chip is 012, where 01 is the device number and 2 is the fault type.

The second function of the main control device 4 is the alarm information display function. After the main control device 4 generates the alarm information, the alarm information will be displayed on the display screen. The display screen here can be a computer or other special settings. Alarm display screen, the information displayed on the display screen is the location number of the accident, the specific location information of the equipment where the accident occurred, and the type of accident. Affection!!!". The display function may also include triggering an audible and visual alarm device. When the controller receives the alarm signal, it will trigger the audible and visual alarm device, so that the staff in the main control room can find the alarm information more quickly and improve the efficiency of accident handling.

Furthermore, the alarm information display function of the main control device can also display the specific location of the alarm equipment on the electronic map of the substation in a graphical manner, so that the staff in the studio can find the specific location of the alarm equipment more intuitively, shortening the time required for the staff. The reaction time is improved, and the handling efficiency of accidents is improved.

The third function of the main control device 4 is a short message sending function, which is used to send the generated alarm information to the terminal device 5 through the pre-stored communication information, the pre-stored communication information is the mobile phone number of the staff, through a The automatic dialing program sends the alarm information to the terminal equipment 5 of the staff, and the terminal equipment 5 can be a mobile device such as a mobile phone or a tablet. For example, after the main control device 4 still receives the alarm signal numbered 012, it sends a text message to the terminal device, and the terminal device 5 of the staff member will receive a message with the content "No. 01 equipment at xxx is on fire, please deal with it as soon as possible!! ", so that even if the staff is not in the main control room, they can receive the alarm information in time and carry out processing work in time.

It can be seen from this embodiment that the waterproof early warning device 1 collects the liquid level signal through the first data acquisition unit 11 and sends it to the first control unit 12, and the first control unit 12 sends the first alarm signal when the liquid level reaches the first threshold and sends To the main control device 4; the fire prevention warning device 2 detects the fire signal by the second data acquisition unit 21, and the second control unit 22 generates a second alarm signal when the fire signal reaches the second threshold and sends it to the main control device; moisture-proof early warning The device 3 detects the temperature and humidity signal through the third data acquisition unit 31 and sends it to the third control unit 32. When the temperature and humidity signal reaches the third threshold, the third control unit 32 sends a third alarm signal and sends it to the main control device 4. The control device receives the alarm signal and sends it to the terminal equipment 5. The utility model sends the alarm signals sent by the three early warning devices to the terminal equipment 5 through the main control device 4, reminding all the substation staff to deal with the accidents in time, achieving the effect of unified management and control of the substation equipment, and improving the safety of substation equipment accidents The processing efficiency effectively guarantees the safe operation of substation equipment.

Embodiment two

Please refer to FIG. 5 . FIG. 5 is a schematic structural diagram of a substation monitoring and early warning system provided by Embodiment 2 of the present invention.

On the basis of the above embodiments, the substation monitoring and early warning system of this embodiment further includes a first execution unit 13 and a third execution unit 33 .

The first execution unit 13, the second output end of the first control unit is connected to the input end of the first execution unit; when the first control unit judges that the liquid level data exceeds the first threshold, the first control command is sent to The first execution unit, the first execution unit performs pumping work according to the first control command.

Wherein, the first execution unit 13 is one or more water pumps, on the basis of the first control unit 12 judging that the liquid level exceeds the first threshold and sending a first alarm signal, at the same time, it sends a first control command to the first execution unit 13, In order to make the water pump of the first execution unit perform water pumping work.

The third execution unit 33, the second output end of the third control unit is connected to the input end of the third execution unit, and when the third control unit judges that the temperature and humidity data exceeds the third threshold, it sends a third control command to The third execution unit, the third execution unit performs exhaust air heating according to the third control command.

Wherein, the third execution unit 33 is an exhaust fan and a heater. On the basis that the third control unit 32 judges that the temperature and humidity exceed the third threshold and sends a third alarm signal, it simultaneously sends a third control command to the third execution unit 13, so that The exhaust fan and heater of the third execution unit perform exhaust heating and tide driving work.

It can be seen from this embodiment that the waterproof early warning device 1 adds a first execution unit 13 on the basis of detecting that the liquid level exceeds the first threshold and sends a first alarm signal, so that the first execution unit 13 automatically starts the emergency device water pump for automatic water pumping The moisture-proof early warning device 3 increases the third execution unit 33 on the basis of detecting that the temperature and humidity exceed the third threshold and sends a third alarm signal, so that the third execution unit 33 automatically starts the emergency device exhaust fan and heater to exhaust the damp equipment Heat to drive away the tide, avoiding more serious accidents caused by the staff's failure to arrive at the scene in time, and effectively improving the efficiency of accident handling.

Further, the system of this embodiment also includes a signal transmission device 6, and the signal transmission device 6 includes a signal transmitter and a signal receiver; the waterproof early warning device 1, the fire early warning device 2, and the moisture early warning device 3 communicate with the main body through the signal transmission device 6 respectively. The control device 4 is connected.

In this embodiment, after the waterproof early warning device 1 sends the first alarm signal, the fire early warning device 2 sends the second alarm signal, and the moisture-proof early warning device 3 sends the third alarm signal, the first, second, The third alarm signal is transmitted to the main control device 4 . Described signal transmission device 6 comprises signal transmitter and signal receiver, and signal transmitter is installed at the output end of three early warning devices, and signal transmitter is used for receiving the alarm signal that early warning device sends, and these alarm signals are sent out, then The signal receiver receives the alarm signal sent by the signal transmitter, and sends the received alarm signal to the main control device 4 .

Further, the signal transmitter selects the wireless signal transmitter, and the signal receiver selects the wireless signal receiver, and the wireless transmission is flexible. It is easy to operate, can overcome the limitations of factors such as environment and terrain, and ensure the reliability of data transmission.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement and improvement made within the spirit and principles of the utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A substation monitoring and early warning system, characterized in that it comprises: waterproof early warning device, fire prevention early warning device, moisture-proof early warning device, main control device and terminal equipment; The waterproof early warning device includes a first data collection unit and a first control unit, the first data collection unit is connected to the first control unit; the fire early warning device includes a second data collection unit and a second control unit, the The second data collection unit is connected to the second control unit; the moisture-proof early warning device includes a third data collection unit and a third control unit, and the third data collection unit is connected to the third control unit; the first control unit is the first An output terminal, the first output terminal of the second control unit and the third control unit are respectively connected to the main control device, and the main control device is connected to the terminal device; The first data acquisition unit collects a liquid level signal, the first control unit generates a first alarm signal according to the liquid level signal, the main control device generates first alarm information according to the first alarm signal, and the The terminal device displays the first alarm information; The second data acquisition unit collects smoke and temperature signals, the second control unit generates a second alarm signal according to the smoke and temperature signals, and the main control device generates second alarm information according to the second alarm signal, The terminal device displays the second alarm information; The third data collection unit collects temperature and humidity signals, the third control unit generates a third alarm signal according to the temperature and humidity signals, the main control device generates third alarm information according to the third alarm signal, and the The terminal device displays the third alarm information. 2. The substation monitoring and early warning system according to claim 1, wherein the waterproof early warning device further comprises: a first execution unit, the second output terminal of the first control unit is connected to the first execution unit input connection; The first control unit sends a first control command to the first execution unit, and the first execution unit performs pumping work according to the first control command. 3. A substation monitoring and early warning system as claimed in claim 1, wherein the moisture-proof early warning device further comprises: a third execution unit, the second output terminal of the third control unit is connected to the third execution unit input connection, The third control unit sends a third control command to the third execution unit, and the third execution unit performs exhaust air heating according to the third control command. 4. A substation monitoring and early warning system according to claim 2, characterized in that the first execution unit is a water pump. 5 . The substation monitoring and early warning system according to claim 3 , wherein the third executing unit is an exhaust fan and a heater. 6 . 6. A kind of substation monitoring and early warning system as claimed in claim 1, is characterized in that, comprises: The first data acquisition unit is a liquid level sensor; The second data acquisition unit is a smoke sensor and a temperature sensor; The third data acquisition unit is a temperature sensor and a humidity sensor. 7. A kind of substation monitoring and early warning system as claimed in claim 1, is characterized in that, also comprises: A signal transmission device, the signal transmission device includes a signal transmitter and a signal receiver; The waterproof early warning device, the fire early warning device, and the moisture-proof early warning device are respectively connected to the main control device through a signal transmission device. 8. The substation monitoring and early warning system according to claim 1, characterized in that: the first alarm information includes the first accident location number, the first specific location information and the first accident type; The main control device displays the first alarm information on the display screen; The main control device sends the first alarm information to the terminal device. 9. A substation monitoring and early warning system as claimed in claim 1, characterized in that: The second alarm information includes the second accident location number, the second specific location information and the second accident type; The main control device displays the second alarm information on the display screen; The main control device sends the second alarm information to the terminal device. 10. A substation monitoring and early warning system as claimed in claim 1, characterized in that: The third alarm information includes the third accident location number, the third specific location information and the third accident type; The main control device displays the third alarm information on the display screen; The main control device sends the third alarm information to the terminal device.