CN110083120B - Alarm system and method applied to traction and mixing house - Google Patents
Alarm system and method applied to traction and mixing house Download PDFInfo
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- CN110083120B CN110083120B CN201910385384.6A CN201910385384A CN110083120B CN 110083120 B CN110083120 B CN 110083120B CN 201910385384 A CN201910385384 A CN 201910385384A CN 110083120 B CN110083120 B CN 110083120B
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- G—PHYSICS
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- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The present disclosure provides an alarm system and method for use in a mixing plant. The alarm system applied to the traction and mixing station comprises a main controller which is respectively connected with a first temperature and humidity module, a second temperature and humidity module and a third temperature and humidity module; the first temperature and humidity module is used for collecting the temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the second temperature and humidity module is used for collecting the temperature and humidity in the direct-current screen indoor battery cabinet, and the third temperature and humidity module is used for collecting the temperature and humidity of the power transformation and distribution indoor air conditioner; the main controller is used for comparing the received temperature and humidity with corresponding preset thresholds and outputting corresponding alarm signals; the main controller is also used for integrating the received temperature and humidity and the output alarm signals, one path of the integrated alarm signals is sequentially transmitted to the power dispatching upper computer through the switch and the ring network bus of the PSCADA system network, and the other path of the integrated alarm signals is transmitted to the power manager terminal through the wireless transmission module; the ring network bus and the wireless transmission module are used for realizing rapid information transmission and reliable alarm signal transmission.
Description
Technical Field
The disclosure belongs to the field of rail traffic control, and particularly relates to an alarm system and method applied to a traction and mixing station.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In a traction and mixing house under the jurisdiction of rail transportation departments, as more distribution rooms exist, more dangerous sources exist. For example, in a GIS (Gas Instulated Switchgear, that is, gas is used as an insulating medium, and all switchgear assemblies are packaged together), SF6 inert gas is colorless, odorless and nontoxic, but the equipment runs for a long time, the contact resistance of an internal electrical contact becomes large, a heating phenomenon can be generated, and the temperature of the SF6 gas is increased. In addition, the change of the external environment temperature can also have great influence on the SF6 gas temperature. Because the water vapor cannot be completely removed from the cabinet in the transportation and installation process, and the water vapor can be formed along with the change of the temperature and the humidity of the external environment, the water vapor can be mixed with various compounds for a long time to corrode the cabinet body, and the air leakage phenomenon can be caused when serious. The GIS cabinet has the advantages that the integral insulation performance is finally reduced due to the multiple reasons, even breakdown is caused when severe, and then short circuit is caused, so that serious accidents are formed, and serious economic loss is caused. Meanwhile, the electric arc generated by the short circuit decomposes SF6 gas to chemically react with various mixed gases and electrodes to generate toxic gas, and if leakage happens, personal safety can be seriously endangered.
In the direct current screen room, if staff does not carry out periodic charge and discharge work to direct current screen battery and UPS (Uninterruptible Power Supply, uninterrupted power supply) power battery, make it be in the float charge state for a long time, under ambient temperature, humidity seriously influence, battery insulation level decline, electrolyte is likely to reveal, and the circuit also is likely to take place the short circuit, directly influences direct current screen safe operation, causes large tracts of land power failure to high-voltage system. If each power transformation and distribution room device is in a moist or high-temperature environment for a long time, the service life of the power transformation and distribution room device can be influenced if dehumidification and cooling are not performed in time. At present, most of domestic rail transit departments have PSCADA (Power Supervisory Control And Data Acquisition, namely an electric power monitoring and data acquisition system) systems, and the system also comprises a comprehensive automation system of the substation, has the functions of primary equipment monitoring, operation data acquisition, time sequence recording and the like, and also has the functions of information processing, dispatching communication, central signal protection, automation protection and the like of the whole substation.
The inventor finds that the concentration of the changes of factors such as the temperature and the humidity of the battery in the battery cabinet in the direct-current screen chamber is not high in a general control system (the oxidation of the battery electrode is serious due to the high temperature and the humid environment in many times, and battery leakage or short-circuit accidents can occur), and the changes of the factors such as the temperature and the humidity of SF6 gas in the GIS chamber cannot be simultaneously related to a monitoring program, so that comprehensive collection and control are difficult to realize. Therefore, SF6 gas temperature and humidity in a GIS cabinet, and temperature and humidity in a battery cabinet in a direct current screen room cannot be comprehensively collected in a traction and mixing station, more importantly, the environment of a power transformation and distribution room cannot be rapidly found out, actions are rapidly made to dehumidify and cool, and the conditions finally lead to the great reduction of the advanced pre-judging capability, the rapid reaction capability and the comprehensive management capability of the traction and mixing station.
Disclosure of Invention
In order to solve the above problems, a first aspect of the present disclosure provides an alarm system applied in a mixing house, which can collect the temperature and humidity of SF6 gas in a GIS high-voltage cabinet, the temperature and humidity in a battery cabinet in a dc screen room, and the temperature and humidity of an indoor air conditioner for power transformation and distribution, and perform temperature and humidity alarm analysis and comprehensive summarization in time, so as to improve the advanced pre-judging capability, the rapid reaction capability and the comprehensive management capability of the mixing house.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
an alarm system for use in a mixing department, comprising:
The main controller is respectively connected with the first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module; the first temperature and humidity module is used for collecting the temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the second temperature and humidity module is used for collecting the temperature and humidity in the direct-current screen indoor battery cabinet, and the third temperature and humidity module is used for collecting the temperature and humidity of the power transformation and distribution indoor air conditioner; the main controller is used for comparing the temperature and humidity transmitted by the received first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module with corresponding preset thresholds and outputting corresponding alarm signals;
The main controller is also used for integrating the received temperature and humidity and the output alarm signals, one path of the integrated alarm signals is sequentially transmitted to the power dispatching upper computer through the switch and the ring network bus of the PSCADA system network, and the other path of the integrated alarm signals is transmitted to the power manager terminal through the wireless transmission module; the ring network bus and the wireless transmission module are used for realizing rapid information transmission and reliable alarm signal transmission.
In order to solve the above problems, a second aspect of the present disclosure provides a working method of an alarm system applied to a blending station, which can collect the temperature and humidity of SF6 gas in a GIS high-voltage cabinet, the temperature and humidity in a battery cabinet in a direct-current screen room, and the temperature and humidity of an indoor air conditioner for power transformation and distribution, and perform temperature and humidity alarm analysis and comprehensive summarization in time, thereby improving the advanced pre-judging capability, the rapid response capability and the comprehensive management capability of the blending station.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
A method of operating an alarm system for use in a mixing plant, comprising:
Step 1: the first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module respectively acquire the temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the temperature and humidity in the direct-current screen indoor battery cabinet and the temperature and humidity of the power transformation and distribution indoor air conditioner and transmit the temperature and humidity to the main controller;
Step 2: the main controller compares the received temperature and humidity with corresponding preset thresholds and outputs corresponding alarm signals; meanwhile, the main controller synthesizes the received temperature and humidity and the output alarm signals, one path of the alarm signals is sequentially transmitted to the power dispatching upper computer through the switch and the ring network bus of the PSCADA system network, and the other path of the alarm signals is transmitted to the power manager terminal through the wireless transmission module, so that the rapid transmission of information and the reliable transmission of the alarm signals are realized through the ring network bus and the wireless transmission module.
The beneficial effects of the present disclosure are:
The temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the temperature and humidity in the direct-current screen indoor battery cabinet and the temperature and humidity of the indoor air conditioner of the power transformation and distribution can be collected, and temperature and humidity alarm analysis and comprehensive summarization are timely carried out, so that an alarm system of a traction and mixing station is more complete, the safety coefficient is higher, operators, schedulers and managers on duty in traction and mixing are facilitated to prejudge accidents in advance, the response and decision are made quickly, accidents and hidden dangers are eliminated in time, and the power supply safety of driving equipment and the personal safety of passengers are guaranteed.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate and explain the exemplary embodiments of the disclosure and together with the description serve to explain the disclosure, and do not constitute an undue limitation on the disclosure.
Fig. 1 is a schematic structural diagram of an alarm system applied in a mixing house according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of automatic reset of temperature control command output and alarm provided by an embodiment of the present disclosure.
Fig. 3 is a battery alarm wiring diagram of a dc screen compartment provided by an embodiment of the present disclosure.
Detailed Description
The disclosure is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present disclosure. 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 disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present disclosure. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Term interpretation:
the traction and mixing station is a traction and mixing substation which is governed by a rail transportation department and provides electric energy for the traction and mixing station and an electric locomotive, and the voltage level in the traction and mixing station is numerous and comprises AC 35kV, AC 0.4kV, DC 1500V and the like; also included are a plurality of distribution rooms, such as: a 35kV high-voltage chamber, a direct-current screen chamber, a direct-current distribution chamber, a transformer chamber and the like.
An alarm system for use in a mixing plant according to this embodiment includes:
The main controller is respectively connected with the first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module; the first temperature and humidity module is used for collecting the temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the second temperature and humidity module is used for collecting the temperature and humidity in the direct-current screen indoor battery cabinet, and the third temperature and humidity module is used for collecting the temperature and humidity of the power transformation and distribution indoor air conditioner; the main controller is used for comparing the temperature and humidity transmitted by the received first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module with corresponding preset thresholds and outputting corresponding alarm signals;
The main controller is also used for integrating the received temperature and humidity and the output alarm signals, one path of the integrated alarm signals is sequentially transmitted to the power dispatching upper computer through the switch and the ring network bus of the PSCADA system network, and the other path of the integrated alarm signals is transmitted to the power manager terminal through the wireless transmission module; the ring network bus and the wireless transmission module are used for realizing rapid information transmission and reliable alarm signal transmission.
Specifically, the main controller can be implemented by a PLC chip or other programmable logic chip, and a person skilled in the art can specifically select the model of the main controller according to the actual situation.
The first temperature and humidity module and the third temperature and humidity module are integrated with a temperature sensor and a humidity sensor.
As an optional implementation manner, the first temperature and humidity module is connected with the main controller through the first GSM module.
The GSM module integrates a GSM radio frequency chip, a baseband processing chip, a memory, a power amplifier device and the like on a circuit board and is a functional module which is provided with an independent operating system, GSM radio frequency processing and baseband processing and provides a standard interface. The structure of the GSM module is an existing structure, and a person skilled in the art can specifically select a corresponding model according to actual conditions.
As another alternative implementation manner, the first temperature and humidity module is connected with the main controller through a first RS485 communication line.
The types of the temperature sensor and the humidity sensor can be specifically selected according to actual conditions.
The temperature in the GIS high-voltage cabinet is too high, so that the pressure in the cabinet is reduced, and the insulation degree is reduced. SF6 gas generally needs to be measured at 20 ℃, and the value is the gas density value in the GIS cabinet, and only a density relay is used for judging whether the GIS cabinet needs to be supplemented with gas or whether a locking contact signal (namely an accident signal) needs to be sent to an upper computer. In summary, the measurement of the gas density value and the temperature compensation are very important, so that an integrated temperature and humidity sensor is designed in the GIS cabinet, namely, the sensor detects temperature and humidity signals simultaneously, then the temperature and humidity signals are transmitted to a main controller (a wireless sensing technology can be adopted to transmit the signals to the main controller) through RS485 communication, and finally, the main controller is utilized to carry out program compensation on the measured temperature signal value, so that the pressure value becomes a pressure value of 20 ℃ in the program, namely, the gas density value at the moment; meanwhile, the main controller also monitors the humidity in the GIS high-voltage cabinet in real time, so that the humidity in the GIS high-voltage cabinet is constant.
As an optional implementation manner, the second temperature and humidity module comprises a temperature sensor and a humidity sensor, the temperature sensor is connected with the mechanical temperature controller, and the temperature sensor and the mechanical temperature controller are arranged on the surface of the battery in the direct-current screen indoor battery cabinet.
Wherein, the mechanical temperature controller is suitable for indoor temperature control of industrial, commercial and civil buildings. The mechanical temperature controller senses temperature by using the inflatable bellows and compares the temperature with the set temperature of a user to automatically control the air conditioning equipment so as to achieve the aim of indoor constant temperature. The ambient temperature of the controlled place is kept constant within the set temperature range. The temperature setting dial pointer should be set to the desired constant temperature position. The pulling switch functions are respectively a power switch (ON-OFF); an operation mode switch (heating HEAT-COOL air COOL), a FAN wind speed switch (low speed L-medium speed M-high speed H). The controllable device: the wind speed of the third-gear fan coil, the three-wire electric valve and the two-wire electric valve can also be connected with an electromagnetic valve, a switch-type air valve or a three-wire air valve.
As an optional implementation manner, the second temperature and humidity module is connected with the PLC in the direct current screen room, and the PLC in the direct current screen room is connected with the main controller through the ethernet transmission optical cable.
As an alternative implementation manner, the main controller is also connected with a fan in the battery cabinet in the direct current screen room.
The direct current screen cabinet has more batteries, and part of UPS power supplies are arranged in the direct current screen cabinet, so that the quantity of the UPS batteries is larger. In order to better dehumidify and cool all batteries of the direct-current screen chamber, all the state signals and starting and stopping signals of the contactors of fans on all the battery cabinets are connected into the PLC cabinet of the direct-current screen chamber.
Meanwhile, in order to enable each battery to be capable of detecting real-time temperature, a mechanical temperature alarm controller is additionally arranged on the surface of each battery. And then all the battery surface temperature alarm signals and the signals of the humidity sensor in the cabinet are transmitted into the PLC cabinet of the direct current screen chamber. And finally, all information is transmitted to a switch in a PLC cabinet of a main control room of the substation through Ethernet communication, and then transmitted to a main controller.
As an optional implementation manner, the third temperature and humidity module is connected with the indoor air conditioner controller for power transformation and distribution, the air conditioner controller is connected with the protocol conversion module, and the protocol conversion module is connected with the main controller through a second RS485 communication line.
As an alternative implementation manner, the main controller is also communicated with the upper computer of the main control room.
Specifically, as shown in fig. 1, an alarm system applied in a mixing station is provided, a main controller is installed in a PLC cabinet 16 of the mixing station, a first temperature and humidity module is installed in a GIS high-voltage cabinet 1, a first GSM module 2 is provided in the GIS high-voltage cabinet 1, the first temperature and humidity module is connected with the main controller through the first GSM module, and the first temperature and humidity module is also connected with the main controller in the PLC cabinet 16 of the mixing station through a first RS485 communication line 3.
In this embodiment, three power transformation and distribution chambers are included in the blending station, where a first air-conditioning controller in the variable-frequency air conditioner 4 of the first power transformation and distribution chamber is connected to the first protocol conversion module 5, a second air-conditioning controller in the variable-frequency air conditioner 7 of the second power transformation and distribution chamber is connected to the second protocol conversion module 8, and a first air-conditioning controller in the variable-frequency air conditioner 9 of the third power transformation and distribution chamber is connected to the third protocol conversion module 10, and the first protocol conversion module 5, the second protocol conversion module 8 and the third protocol conversion module 10 are respectively connected to the master controller in the PLC cabinet 16 of the master control chamber of the blending station through the second RS485 communication line 6.
In this embodiment, three dc-screen indoor battery cabinets are included in the blending station, where the first dc-screen indoor battery cabinet 11, the second dc-screen indoor battery cabinet 12, and the third dc-screen indoor battery cabinet 13 are all connected to the PLC in the PLC control cabinet 14 of the dc-screen indoor dc-screen, the second temperature and humidity module is disposed in the first dc-screen indoor battery cabinet 11, the second dc-screen indoor battery cabinet 12, and the third dc-screen indoor battery cabinet 13, and the second temperature and humidity module transmits the collected temperature and humidity in the first dc-screen indoor battery cabinet 11, the second dc-screen indoor battery cabinet 12, and the third dc-screen indoor battery cabinet 13 to the PLC in the PLC control cabinet 14 of the dc-screen indoor dc-screen, and transmits the collected temperature and humidity to the master controller in the master control room PLC cabinet 16 of the blending station via the ethernet transmission optical cable 15.
The master control room PLC cabinet 16 of the traction and mixing station is internally provided with a master control room PLC cabinet switch frame 17, the master control room PLC cabinet switch frame 17 is provided with a switch, and the master controller sums the received temperature and humidity signals and the output alarm information and then transmits the temperature and humidity signals and the output alarm information to the first power manager terminal 26, the second power manager terminal 27 and the third power manager terminal 28 through the second GSM module 18.
Meanwhile, the main controller integrates the received temperature and humidity signals and the output alarm information and then transmits the signals to the first main control room upper computer 19 and the second main control room upper computer 20; the main controller sums the received temperature and humidity signals and the output alarm information and then controls the upper computer 23 through the ring network bus scheduling of PSCADA system network. Wherein, the ring network bus of PSCADA system network is double bus, namely one main one standby; the ring network bus of PSCADA system network is formed from signal transmission line 21, ring network transmission line 22, main bus 24 and standby bus 25.
In this embodiment, a remote controller (i.e. an industrial monitoring GSM module with model JCJ 505) is installed in a PLC cabinet of a master control room of a blending station, and the GSM module and a SIM card of a mobile phone reach a communication protocol (i.e. one party sends information and the other party receives data, and in addition, a remote upper computer can be connected with an RS484 communication port of JCJ505 to change a temperature and humidity alarm threshold). Signals of temperature and humidity sensors and the like can be transmitted into the JCJ505 controller through an 8-port wireless input end of the JCJ505, and then after the GSM module processes the information, temperature and humidity alarm information and other important data are sent to mobile SIM cards of a traction and mixing management personnel and a remote power dispatching personnel by utilizing a mobile network, so that real-time and synchronous alarm is realized.
When the wireless transmission is used, the existing PSCADA system of the traction and mixing station can be utilized, important information such as temperature and humidity alarm in GSM is transmitted to a PLC cabinet switch of a main control room of the traction and mixing station through RS485 communication, and then the important information is transmitted to an upper computer of a power dispatching room of a remote control center through a ring network bus of the PSCADA system, so that information is provided for a dispatcher, and judgment and decision are made. Finally, the data is transmitted through two paths of wireless transmission and ring network bus, so that the information is transmitted rapidly and the alarm is transmitted reliably, and the transmission process is double insurance.
In this embodiment, the main controller takes PLC as an example, and is installed in the main control room PLC cabinet:
For the control of temperature and humidity of all power transformation and distribution rooms and GIS rooms, the upper computer of the main control room sends control commands to the PLC cabinet of the main control room, and then the control commands can be transmitted to the controller of the variable-frequency air conditioner through the intra-program communication protocol and protocol conversion module to adjust the frequency f and dehumidifying items of the air conditioner. When the master control room PLC detects the air conditioner fault, a RESET signal RESET can be sent to the variable-frequency air conditioner to restart the machine.
The automatic reset of the temperature control command output and alarm is realized by programming each functional block of the programming software STEP7, and the process is as shown in figure 2:
First, as can be seen from the figure, the SCALE type conversion function block converts all of the temperature sensing signals PIW250PIW251PIW252 into the computer-recognized shaping data MD200, MD201, MD202. Then, the CAMP comparison function block compares the signal values MD200, MD201, MD202 with the alarm set value 38 degrees, AND only when all the three signal values are greater than 38 degrees, the enable end EN of the AND function block (logic AND) is turned on (the upper computer alarm system is in an automatic state, i.e. sw_at=1), AND finally M1.0 is set to "1" (M1.0 is defined as the start-up of the UPS cabinet induced draft fan), AND M1.1 is also turned on automatically (M1.1 may be defined as the start-up of the UPS cabinet exhaust fan) through the conduction of M1.0. The self-resetting of the alarm program is also simple, AND when three signal values are smaller than 35 degrees through the comparing function block (CAMP function block) through RET (RESET port) of the AND function block, the RET port is automatically RESET (at the moment, a RESET signal RESET can be sent to RESET the alarm by a hand on the upper computer), the system is recovered to be normal, AND the fan stops rotating.
For dehumidification and cooling control of a plurality of battery cabinets in a direct-current screen room, holes can be formed in the left side surface and the right side surface of each battery cabinet body, and two mechanical fan devices (one strong air suction and one strong air exhaust) are additionally arranged. When the PLC detects that more than three batteries in a certain battery cabinet are in temperature alarm, the PLC can immediately manually send out starting signals DO1, DO2, don of a mechanical fan of the certain battery cabinet through an upper computer (logic judgment can be carried out through programming, and a strong air exhaust signal for starting the fan is automatically sent out). Fig. 3 is a battery alarm wiring diagram of a DC screen room, wherein 2-1, 2-2 and 2-3 are respectively a battery cabinet of a certain UPS battery cabinet or a battery cabinet of a DC screen of a first DC screen room, a battery cabinet of a certain UPS battery cabinet or a battery cabinet of a DC screen of a second DC screen room and a battery cabinet of a certain UPS battery cabinet or a battery cabinet of a DC screen of a third DC screen room, 2-7 is a DC220V power supply, 2-8 is a PLC controller of the DC screen room, and 9 are input signals corresponding to each temperature controller and transmitted to the PLC cabinet. Only if any one of the first temperature controller 2-4, the second temperature controller 2-5 and the third temperature controller 2-6 on the surface of the battery cabinet reaches the threshold value of the temperature controller, the corresponding 9 to 16 input ends are closed, and a high-level signal is input to the PLC cabinet. And finally, transmitting a control signal of an upper computer of the main control room to the PLC in the DC screen room through Ethernet communication, and rapidly starting a mechanical fan for an alarming battery cabinet to dehumidify and cool.
The working method of the alarm system applied to the blending station of the embodiment comprises the following steps:
Step 1: the first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module respectively acquire the temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the temperature and humidity in the direct-current screen indoor battery cabinet and the temperature and humidity of the power transformation and distribution indoor air conditioner and transmit the temperature and humidity to the main controller;
Step 2: the main controller compares the received temperature and humidity with corresponding preset thresholds and outputs corresponding alarm signals; meanwhile, the main controller synthesizes the received temperature and humidity and the output alarm signals, one path of the alarm signals is sequentially transmitted to the power dispatching upper computer through the switch and the ring network bus of the PSCADA system network, and the other path of the alarm signals is transmitted to the power manager terminal through the wireless transmission module, so that the rapid transmission of information and the reliable transmission of the alarm signals are realized through the ring network bus and the wireless transmission module.
The temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the temperature and humidity in the direct-current screen indoor battery cabinet and the temperature and humidity of the indoor air conditioner of the power transformation and distribution can be collected, and temperature and humidity alarm analysis and comprehensive summarization are timely carried out, so that an alarm system of a traction and mixing station is more complete, the safety coefficient is higher, operators, schedulers and managers on the traction and mixing station can prejudge accidents in advance, the response and decision can be made quickly, accidents and hidden dangers are eliminated timely, and the power supply safety of driving equipment and the personal safety of passengers are guaranteed.
The foregoing description of the preferred embodiments of the present disclosure is provided only and not intended to limit the disclosure so that various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Claims (8)
1. An alarm system for use in a mixing department, comprising:
The main controller is respectively connected with the first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module; the first temperature and humidity module is used for collecting the temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the second temperature and humidity module is used for collecting the temperature and humidity in the direct-current screen indoor battery cabinet, and the third temperature and humidity module is used for collecting the temperature and humidity of the power transformation and distribution indoor air conditioner; the main controller is used for comparing the temperature and humidity transmitted by the received first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module with corresponding preset thresholds and outputting corresponding alarm signals;
The main controller is also used for integrating the received temperature and humidity and the output alarm signals, one path of the integrated alarm signals is sequentially transmitted to the power dispatching upper computer through the switch and the ring network bus of the PSCADA system network, and the other path of the integrated alarm signals is transmitted to the power manager terminal through the wireless transmission module; the ring network bus and the wireless transmission module are used for realizing the rapid transmission of information and the reliable transmission of alarm signals;
the second temperature and humidity module comprises a temperature sensor and a humidity sensor, the temperature sensor is connected with the mechanical temperature controller, and the temperature sensor and the mechanical temperature controller are arranged on the surface of a battery in the direct-current screen indoor battery cabinet;
And the main controller is also connected with a fan in the battery cabinet in the direct-current screen room.
2. The alarm system of claim 1, wherein the first temperature and humidity module and the third temperature and humidity module are integrated with a temperature sensor and a humidity sensor.
3. An alarm system for a mixing plant according to claim 1, wherein the first temperature and humidity module is connected to the main controller via a first GSM module.
4. The alarm system for a mixing house of claim 1, wherein the first temperature and humidity module is connected to the main controller through a first RS485 communication line.
5. The alarm system of claim 1, wherein the second temperature and humidity module is connected to a PLC in the dc screen room, and the PLC in the dc screen room is connected to the main controller through an ethernet transmission cable.
6. The alarm system for a blending station according to claim 1, wherein the third temperature and humidity module is connected to an indoor air conditioner controller for power transformation and distribution, the air conditioner controller is connected to a protocol conversion module, and the protocol conversion module is connected to the main controller through a second RS485 communication line.
7. An alarm system for use in a mixing department as claimed in claim 1, wherein said master controller is also in communication with a master control room host computer.
8. A method of operating an alarm system for use in a blending station as claimed in any of claims 1 to 7, comprising:
Step 1: the first temperature and humidity module, the second temperature and humidity module and the third temperature and humidity module respectively acquire the temperature and humidity of SF6 gas in the GIS high-voltage cabinet, the temperature and humidity in the direct-current screen indoor battery cabinet and the temperature and humidity of the power transformation and distribution indoor air conditioner and transmit the temperature and humidity to the main controller;
Step 2: the main controller compares the received temperature and humidity with corresponding preset thresholds and outputs corresponding alarm signals; meanwhile, the main controller synthesizes the received temperature and humidity and the output alarm signals, one path of the alarm signals is sequentially transmitted to the power dispatching upper computer through the switch and the ring network bus of the PSCADA system network, and the other path of the alarm signals is transmitted to the power manager terminal through the wireless transmission module, so that the rapid transmission of information and the reliable transmission of the alarm signals are realized through the ring network bus and the wireless transmission module.
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