CN212905175U - Switch cabinet heating fault simulation device - Google Patents

Abstract

The utility model discloses a cubical switchboard fault analogue means that generates heat, including temperature control module and temperature monitoring module, temperature control module passes through the wire and links to each other with 3 electric stove heater, and temperature monitoring module links to each other with 3 temperature sensor through wired connected mode, and 3 electric stove heater and 3 temperature sensor are arranged in cubical switchboard cable chamber, generating line room and circuit breaker room respectively. The temperature control module is provided with a current adjusting knob, and the knob is screwed to change the current flowing through the heating wire, so that the heating power of the heating wire is changed, and the aim of changing the temperature in the switch cabinet is fulfilled. The temperature monitoring module can monitor the temperature in a cable chamber, a bus chamber and a breaker chamber of the switch cabinet in real time, and experimenters can conveniently and pertinently change the current adjusting knob to achieve expected experimental conditions, so that the experimental efficiency and the accuracy of experimental results are improved.

Description

Switch cabinet heating fault simulation device

Technical Field

The utility model relates to a power equipment technical field particularly, relates to a cubical switchboard fault analogue means that generates heat.

Background

The switch cabinet is one of key equipment of a power system, and in the operation process of the switch cabinet, the contact surface is reduced due to oxidation of a contact and a terminal surface and aging of a spring, and the internal overheating of the switch cabinet is caused by various factors such as impact caused by sudden change of power load. If the switch cabinet is in an overheat state for a long time, internal components can be aged, the insulating capability is reduced, and finally a heating fault is formed. In addition, the switch cabinet usually works in a strong electromagnetic environment, and weak links existing in the switch cabinet are extremely easy to amplify, so that partial discharge and even fault electric arcs are caused. The fault electric arc can heat the whole switch cabinet quickly, and fault expansion and even switch cabinet burning are easily caused, so that the regular temperature detection of the switch cabinet in operation is significant work.

At present, the temperature monitoring method for the switch cabinet is mainly divided into two methods: the first method is a direct measurement method, namely the measurement is realized by installing a temperature sensor inside, a thermal sensitive element such as a thermal resistor generates a signal, and the signal is transmitted to a background in a wire transmission or wireless transmission mode, but the method easily causes the problem of discharge of a suspended electrode and influences the normal operation of a switch cabinet; the second method is an indirect measurement method, namely, whether the interior is overheated or not is judged by patrolling the temperature of the cabinet body through an infrared temperature measuring device. However, the physical law between the cabinet internal temperature and the cabinet body temperature is not clear, and therefore the cabinet internal temperature cannot be accurately determined.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a cubical switchboard trouble analogue means that generates heat through the condition of generating heat of the different trouble of analog switch cabinet, and the physical law between temperature and the cabinet body temperature in the systematic study cabinet has solved the problem that infrared temperature measuring device tours the unable accurate judgement cabinet temperature of cabinet body temperature.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a cubical switchboard fault analogue means that generates heat, includes temperature control module and temperature monitoring module, temperature control module passes through the wire and links to each other with 3 electric stove heater, temperature monitoring module links to each other with 3 temperature sensor through wired connected mode, 3 electric stove heater with 3 temperature sensor are arranged in cubical switchboard cable chamber, generating line room and circuit breaker room respectively.

Preferably, a current adjusting knob is arranged on the temperature control module, the current flowing through the electric furnace heating wire can be changed by screwing the knob, and then the heating power of the heating wire in the switch cabinet cable chamber, the bus chamber and the breaker chamber is changed, and the heating power adjusting range is 0-50W.

Preferably, the data acquisition port of the temperature monitoring module is connected with the 3 temperature sensors in a wired connection mode, and the transmitted temperature information is output to a display through the data output port of the temperature monitoring module to be displayed in real time.

Preferably, 3 electric stove heater are nickel-chromium heating wire, heating wire diameter 0.25mm, length 50mm, on the heater in the cable chamber was fixed in earthing switch with the winding mode, the heater in the generating line chamber was fixed in main female arranging with the winding mode on, on the heater in the circuit breaker chamber was fixed in the handcart contact with the winding mode, insulating processing was all done at all winding positions.

Preferably, the temperature sensors are thermocouple type temperature sensors, the temperature measuring range is 0-300 degrees, and 3 temperature sensors are respectively fixed in the cable chamber, the bus chamber and the breaker chamber near the heating wire of the electric furnace by using heat-resistant adhesive tapes.

Advantageous effects

The utility model provides a cubical switchboard fault simulation device that generates heat. Compared with the prior art, the method has the following beneficial effects:

(1) this cubical switchboard fault analogue means that generates heat links to each other with 3 electric stove heaters through temperature control module, is provided with current regulation knob on the temperature control module, can twist and move the current that the knob changed the heater to change the heating power of heating wire, reach the purpose that changes the interior temperature of cabinet then. An electric furnace heating wire is respectively arranged in a cable chamber, a bus chamber and a breaker chamber of the switch cabinet, so that various heating faults of the switch cabinet can be comprehensively simulated. This cubical switchboard fault analogue means that generates heat changes the temperature convenience that generates heat in the cabinet, and the simulation cubical switchboard fault type is comprehensive, and the analog structure is the same with actual structure, and simulation effect is good.

(2) This cubical switchboard fault analogue means that generates heat links to each other with 3 thermocouple type temperature sensor through temperature monitoring module, can the temperature in real-time supervision cubical switchboard cable chamber, generating line room and the circuit breaker room, and the experimenter of being convenient for is pointed to change current regulation knob to reach anticipated experimental conditions, improved the accuracy of experimental efficiency and experimental result.

(3) This cubical switchboard fault analogue means that generates heat can simulate out the various fault phenomena that generate heat of cubical switchboard under the condition that need not to give the cubical switchboard circular telegram, for the physical law between the interior temperature of research cubical switchboard cabinet and the cabinet face temperature provides powerful help, not only safety but also economy has very high practicality.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

In the figure: the system comprises a temperature control module 1, a temperature monitoring module 2, an electric furnace heating wire 3, a temperature sensor 4, a cable chamber 5, a bus chamber 6 and a breaker chamber 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, the utility model provides a technical solution: the utility model provides a cubical switchboard fault analogue means that generates heat, includes temperature control module 1 and temperature monitoring module 2, 220V alternating current is inserted to 1 input of temperature control module, and the 220V power is behind control circuit board, links to each other with 3 electric stove heater 3, is provided with switch and current regulation knob on the circuit control board for control opening of electric stove heater and stop and the size of giving out heat. 3 individual electric stove heater 3 is the nickel-chromium heating wire, on being fixed in the earthing switch in cable chamber 5 respectively with winding mode, main arranging in the generating line room 6 is gone up and on the handcart contact in the circuit breaker room 7, at earthing switch, main arranging and handcart contact head-to-tail symmetry department all set up threaded hole, the internal surface threaded connection of screw hole has the threaded rod, the top fixedly connected with mounting plate of threaded rod, can effectively fix electric stove heater 3 through setting up the mounting plate, prevent that it from when the temperature rises, the landing appears because of expend with heat and contract with cold. The temperature monitoring module 2 comprises a power supply part, a signal processing part and a display part, wherein the power supply part is mainly used for supplying power to the module, the signal processing part comprises a controller, a storage, a filter and an amplifier and is mainly used for processing signals from the temperature sensors 4, an input interface of the signal processing part is connected with the 3 temperature sensors 4 in a wired connection mode, and an output interface of the signal processing part is connected with the display through a signal wire. The 3 temperature sensors 4 are thermocouple type temperature sensors and are fixed to the cable chamber 5, the bus bar chamber 6 and the breaker chamber 7 with heat-resistant tapes in the vicinity of the heater 3 of the electric furnace, respectively. The display part is an output port of temperature information, and displays the temperatures in the cable chamber 5, the bus bar chamber 6 and the breaker chamber 7 to the eyes of a tester in real time.

The utility model discloses an operating principle is through electric stove heater production of heat, simulates out the phenomenon of generating heat that the cubical switchboard leads to because of faults such as component ageing, insulating properties reduce when the operation, utilizes current adjust knob to change the electric current size of flowing through the electric stove heater to change the size of giving out heat, in order to reach the purpose that is suitable for different faults that generate heat. The temperature sensor automatically collects the temperature in the switch cabinet, and after the temperature is processed by the filter, the amplifier and other equipment of the signal processing part, the temperature information is displayed in front of the tester in real time, so that the real-time monitoring of the temperature in the switch cabinet is realized. When the temperature in the switch cabinet is higher than the preset temperature of the experiment, an experimenter can screw the current adjusting knob, so that the current flowing through the heating wire of the electric furnace is reduced, and the heating value of the heating wire is reduced; when the temperature is lower than the experiment preset temperature in the switch cabinet, experimenters can screw the current adjusting knob, the current flowing through the electric furnace heating wire is increased, the heating wire is increased to generate heat, and therefore the temperature in the switch cabinet reaches the experiment preset temperature. After the temperature in the switch cabinet meets the requirement, the temperature of the switch cabinet is measured through the infrared temperature measuring device, and sufficient experimental data are provided for researching the physical law of the temperature in the switch cabinet and the temperature of the cabinet body.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a cubical switchboard fault analogue means that generates heat, includes temperature control module (1) and temperature monitoring module (2), its characterized in that: temperature control module (1) links to each other with 3 electric stove heater (3) through the wire, temperature monitoring module (2) link to each other with 3 temperature sensor (4) through wired connected mode, 3 electric stove heater (3) with 3 temperature sensor (4) are arranged in cubical switchboard cable chamber (5), generating line room (6) and circuit breaker room (7) respectively.

2. The switch cabinet heating fault simulation device of claim 1, wherein: the temperature control module (1) is provided with a current adjusting knob, the current flowing through the electric furnace heating wire (3) can be changed by screwing the knob, the heating power of the heating wire in the switch cabinet cable chamber (5), the bus chamber (6) and the breaker chamber (7) is further changed, and the heating power adjusting range is 0-50W.

3. The switch cabinet heating fault simulation device of claim 1, wherein: and a data acquisition port of the temperature monitoring module (2) is connected with the 3 temperature sensors (4) in a wired connection mode, and transmitted temperature information is output to a display through a data output port of the temperature monitoring module (2) to be displayed in real time.

4. The switch cabinet heating fault simulation device of claim 1, wherein: 3 individual electric stove heater (3) are the nickel-chromium heating wire, heating wire diameter 0.25mm, length 50mm, on the heating wire in cable chamber (5) was fixed in earthing switch with the winding mode, on the heating wire in bus-bar room (6) was fixed in main female arranging with the winding mode, on the heating wire in circuit breaker room (7) was fixed in handcart contact with the winding mode, insulating processing was all done at all winding positions.

5. The switch cabinet heating fault simulation device of claim 1, wherein: the temperature sensors (4) are thermocouple type temperature sensors, the temperature measuring range is 0-300 degrees, and 3 temperature sensors are respectively fixed in the cable chamber (5), the bus chamber (6) and the breaker chamber (7) by heat-resistant adhesive tapes and are close to the electric furnace heating wire (3).

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