JP2002267538A - Temperature recording device of electric power transmission system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature recording device of electric power transmission system easily installed and capable of accurately recording a temperature change of a measurement object without lowering temperature detecting performance due to an environmental change and aged deterioration, and capable of quickly informing that the measurement object exceeds the allowable temperature range. SOLUTION: This temperature recording device 30 is provided with a temperature recording part 40 for storing the temperature and the measurement time as temperature record in a connecting terminal 21 fixed to a bus bar 2 connected to a switch.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature recording device for a power transmission facility and a temperature record management system, and more particularly to a temperature recording device for a power transmission facility for monitoring a temperature change of a railway power transmission facility.

[0002]

[Prior art]

2. Description of the Related Art Electric power supplied to railways is obtained by converting 154 kV electric power output from an ultra-high voltage substation through a primary substation to a voltage suitable for a use at the railway substation.

[0003] Railway substations include a DC substation and an AC substation. In the DC substation, the received AC power is transformed by a current transformer to convert it to 1500 V, 750 V, or 600 V direct current, and Feeding line. Further, in the AC substation, the received AC power is reduced to a predetermined voltage by a transformer, thereby obtaining AC 30 kV, 22 kV.
It is converted to V and supplied to the train line.

FIG. 9 shows a conventional railway substation (AC substation).
In the figure, a switch of a power supply device for supplying power to an overhead wire is shown, and a bus side 1 on the power supply side formed of a metal material such as copper and connected to a transformer (not shown), and a metal material such as copper. A power transmission side buspa 2 to which a power transmission cable 19 for supplying power to the overhead wire via a connection terminal 21 is connected, a movable electrode 3 for electrically connecting and disconnecting the buspas 1 and 2, and an insulator 4 , A supporting member 7 for supporting the bus 1 via an insulator 6, an insulator 8 for insulatingly fixing the bus 2 to the supporting member 7, and a movable electrode 3 for the bus 2 A rotating shaft 9 rotatably supported, a connecting rod 11 connected to the movable electrode 3 via a shaft supporting part 10, and an insulator 1 provided on the connecting rod 11
2 and L connected via the connecting rod 11 and the shaft support 13.
A connecting member 14, a base 15 that rotatably supports the connecting member 14 connected via the rotating shaft 14 </ b> A with respect to the support member 7, and a connecting member 14 connected via the rotating shaft 16 </ b> A. Rod member 16, a driving direction converting member 17 connected to rod member 16 via shaft connecting portion 16 </ b> B to convert a driving force in the rotational direction into a driving force in the horizontal direction, Driving force transmitting member 17 for transmitting a driving force in a rotational direction supplied from a driving source (not shown)
And a movable electrode driving member 18 having a shaft connecting portion 18A connected to the driving force transmitting member 17A by a connecting pin 17B.
And a power transmission cable 1 for supplying power to an overhead wire (not shown)
9, a connection terminal 21 formed of a metal material such as copper and fixed to the busper 2 by a nut 20, and a thermo label 22 attached to the surface of the connection terminal 21 with an adhesive to change color based on a rise in temperature. Having.

[0005] The movable electrode 3 has a connecting member
By rotating around A, it rotates around the rotating shaft 9 as a fulcrum. In the state shown in the figure, the switch is in a closed state, and the buspas 1 and 2 are electrically connected. When the movable electrode 3 rotates counterclockwise about the rotation shaft 9, the movable electrode 3 is opened.

FIG. 10 shows a connection terminal 21 fixed to the bus bush 2 and a bolt 23 provided through the bus bar 2.
The connection terminal 21 is fixed to the busbar 2 by screwing (at four places) with a nut 20, and a thermo label 22 is attached to a substantially central portion of the connection terminal 21.

The thermolabel 22 includes a temperature indicator 22C formed of a thermosensitive material that changes color according to temperature, a temperature indicator 22A (red [65 ° C. or more]) indicating the relationship between the color and temperature indicated by the temperature indicator 22C, 22B (yellow [50 ° C. or higher]). The temperature indicating section 22C has an irreversible property of maintaining the state of having once changed color.
When the temperature rises to 65 ° C. or higher, the color changes to red, and the discolored state is maintained.

Thus, when the discolored thermo label 22 is found during maintenance and inspection, it is possible to easily and visually know that the connection terminal 21 has become hot.
It is possible to safely control the temperature of dangerous places that cannot be approached by high-voltage power transmission.

Further, as a thermolabel whose temperature indicator is formed of a reversible thermosensitive material, for example, Japanese Patent Application Laid-Open No. 5-66
There is one disclosed in Japanese Patent No. 714. In this thermolabel, the transparency of the thermosensitive material changes from transparent to cloudy and opaque in accordance with the temperature, and the reversibility of the change in transparency enables the thermolabel to be used repeatedly.

[0010]

However, according to the conventional temperature control using a thermo label, it is possible to visually know that a temperature change has occurred in a switch, but it is not necessary to determine when the temperature change occurs and when the temperature change occurs. Since the process cannot be detected, even if the temperature of the switch becomes higher than the allowable temperature range due to an increase in power consumption or the like, the detection thereof is delayed, and in the worst case, the switch may be damaged. In addition, there is a problem that the temperature index fades due to environmental changes such as temperature and humidity or aging, and peeling occurs due to a decrease in the adhesiveness of the adhesive.

Therefore, an object of the present invention is to make it easy to mount and accurately record a temperature change of a measuring object without deteriorating the temperature detectability due to an environmental change or an aging change, and to set an allowable temperature range for the measuring object. An object of the present invention is to provide a temperature recording device of a power transmission facility which can promptly know that the temperature has exceeded the threshold.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a temperature detecting means which is mounted on a power transmission facility such as a switch and measures a temperature at predetermined measurement intervals to generate a temperature detection signal. Fixing means for fixing the temperature-sensitive surface of the temperature detection means in close contact with the measurement object by using a projection provided on the temperature measurement object as a support member, and providing the temperature detection means on a mounting portion of the temperature detection means; Measured temperature based on the signal,
A memory unit for storing a temperature record such as a measurement time, a communication unit having a transmission unit for wirelessly transmitting the temperature record, and a wireless transmission of the temperature record stored in the memory unit to the communication unit at a predetermined transmission interval Provided is a temperature recording device of a power transmission facility having a control unit for causing the temperature to be recorded.

According to the present invention, the temperature-sensitive surface of the temperature detecting means is fixed in close contact with the object to be measured by using the projection provided on the object to be measured, so that it can be easily mounted on the object to be measured. In addition, since the temperature-sensitive surface of the temperature detection means is protected by bringing the temperature-sensitive surface into close contact with the measurement object, the temperature change of the measurement object can be monitored without lowering the temperature detectability due to environmental changes and aging. Can record accurately.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a temperature recording device for power transmission equipment according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a switch of a power supply device for supplying power to an overhead line in a railway substation (AC substation) according to an embodiment of the present invention, which is formed of a metal material such as copper and the like. (Not shown), a power transmission side buspa 2 connected to a power transmission cable 19 formed of a metal material such as copper and supplying power to the overhead line via a connection terminal 21; A movable electrode 3 for electrically connecting and disconnecting the busbars 1 and 2; a supporting member 5 for supporting the buspa 1 via an insulator 4; a supporting member 7 for supporting the buspa 1 via an insulator 6; An insulator 8 for insulatingly fixing the movable electrode 3 to the support member 7, a rotating shaft 9 for rotatably supporting the movable electrode 3 on the busbar 2, and a connection connected to the movable electrode 3 via a shaft supporting portion 10. Rod 11 and insulator provided on connecting rod 11 2, the connecting rod 11 and the shaft support portion 13 L-shaped connecting member 14 which is connected via a pivot shaft 14
A base member 15 rotatably supporting the connection member 14 connected via the support member 7 with respect to the support member 7, a rod member 16 connected to the connection member 14 via the rotation shaft 16A, and a rod member 16. A driving direction conversion member 17 connected via the shaft connecting portion 16B to convert the driving force in the rotation direction into a driving force in the horizontal direction; and a driving source (not shown) such as a motor supplied to the driving direction conversion member 17. A driving force transmitting member 17A for transmitting a driving force in a rotating direction, a movable electrode driving member 18 having a shaft connecting portion 18A connected to the driving force transmitting member 17A by a connecting pin 17B, and an electric wire (not shown). A connection terminal 21 formed of a metal material such as copper and fixed to the busper 2 by a nut 20 and a connection terminal 21 fixed to the nut 20 by a screw 24 to supply the temperature of the connection terminal 21 With a temperature recording device 30 for recording.

FIG. 2 shows a mounting portion of the temperature recording device 30 in an enlarged manner, and the connection terminals 21 are fixed to the bush 2 by screwing bolts 23 provided through the bush 2 with nuts 20 (four places). Fixed, temperature recording device 30
Is fixed to the surface of the connection terminal 21 by tightening a nut 20 housed in a hole 30F provided in the fixing portion 30A with a screw 24.

FIG. 3 is an enlarged view of the temperature recording device 30. FIG.
(B) shows the internal structure cut along the line bb in (a). In (a), the upper part of the watertight part 30B accommodating the wireless communication part and the like is open for ease of explanation.

The temperature recording device 30 is formed of a resin material having excellent heat resistance and cold resistance, and includes a fixing portion 30A, a watertight portion 30B, and a base portion 30C.
The fixing portion 30A includes a hole portion 30F that accommodates the nut 20,
Screw 24 for contacting nut 20 with the inner wall surface of hole 30F
And a washer 26 and a nut 25 for preventing the screw 24 from being loosened while the nut 20 is tightened. The watertight portion 30B is fixed by the four screws 31 integrally with the base portion 30C. Form. A sealing member 30E for preventing intrusion of water or the like is inserted into a joint portion with the base portion 30C. Further, the fixing portion 30A is formed with an arc-shaped recess 30D on the side surface thereof in order to avoid interference with the nut in a state integrated with the base portion 30C. The nut 20 fixes the connection terminal 21 to the busper 2 via a spring washer 27 and a washer 28.

Inside the watertight portion 30B, a lithium battery 50 as a power source and circuit components such as a semiconductor device for performing a temperature recording operation and a wireless communication operation with the outside are mounted, and the substrate surface is orthogonal to the power supply direction. Wireless communication unit 60 disposed in a direction in which the wireless communication unit 60 is electrically connected to the negative electrode of the lithium battery 50 and the wireless communication unit 60;
A conductive member 34 for electrically connecting the positive electrode to the wireless communication unit 60, a supporting member 35 for supporting and fixing the conductive member 33 inside the watertight portion 30B, and an insulating member for electrically connecting the conductive member 33 and a ground terminal 39 described later. Partition member 37 supporting the partition wall member 3
And a sealing member 36 for preventing water from entering the watertight portion 30 </ b> B from the sealing member 7. The conductive member 34 is positioned by the support member 32 so as to be in contact with the positive electrode of the lithium battery 50. The wireless communication unit 60 includes a semiconductor device 61 for wireless communication operation, a substrate 62 on which a wiring pattern is formed and which transmits and receives radio waves as an antenna during wireless communication operation, and a semiconductor device for controlling power supplied to the wireless communication unit 60. (A power supply unit) 70 and a semiconductor device (main control unit) 80 for controlling a temperature recording operation and a wireless communication operation with the outside, and are positioned by the support member 32 so as to stand upright inside the watertight portion 30B. ing.

The base section 30C removably houses a temperature recording section 40 containing a lithium battery 44, a semiconductor chip 45, a circuit board 47 and the like in an opening formed in the bottom. The temperature recording section 40 is electrically connected to the wireless communication section 60 in the watertight section 30B by a spring-like signal input / output terminal 38 and a ground terminal 39 provided in the opening. An insulating member 48 made of a material having excellent thermal conductivity such as silicon is provided between the temperature recording section 40 and the connection terminal 21.
Is inserted. In the present embodiment, the watertight portion 30
The size of B is 35 mm in the vertical direction × 35 mm in the horizontal direction × 20 mm in the height direction.

FIGS. 4A and 4B show the temperature recording unit 4.
Indicates 0. The temperature recording unit 40 is commercialized by the applicant as a “button-type cool memory”. A signal input / output unit 41 provided on an upper part is provided outside a metal case formed of a material such as stainless steel. It has a ground terminal portion 42 provided on a cylindrical side surface portion and a flange portion 43 provided on a bottom portion which is a temperature-sensitive surface. Inside a metal case, a lithium battery 44 for supplying power to a circuit, Semiconductor chip 45 having a temperature sensor for performing
A circuit board 47 in which 5 is fixed by bumps 46 such as solder is accommodated, and a circuit pattern forming surface P of the semiconductor chip 45 is disposed so as to face the circuit board 47.

The temperature sensor uses a PN junction type diode formed on the semiconductor chip 45 for temperature detection, and based on a comparison between its forward voltage and a reference voltage, a connection terminal 21 is provided.
Detect the temperature change of A seal member 49 is provided between the signal input / output section 41 and the ground terminal section 42 to prevent short-circuit and provide a watertight structure. Further, a spacer (not shown) formed of a resin material is inserted into the inside of the metal case to fill the gap. The outer diameter of the temperature recording unit 40 is about 17 mm.

FIG. 5 shows a circuit configuration of the temperature recording unit 40. The clock control unit 402 controls the clock function in the circuit based on the reference clock output from the oscillator 401, and the clock control unit 402 outputs the clock. A register 403 for temporarily storing time data, and an ID unit 4 for storing a 64-bit serial number uniquely assigned to the temperature recording unit 40
(I / F) unit 4 that controls data input and output between the wireless communication unit 04 and the wireless communication unit 60 and the main control unit 80
05, a power supply unit 406 such as a lithium battery for supplying power to the circuit, and a memory 4 for storing various programs and arbitrary data such as a temperature recording operation and a temperature recording output operation.
07, a temperature sensor 408 that outputs a temperature detection signal according to the temperature, an A / D conversion of the temperature detection signal, and a measurement control unit 409 that outputs the clock control unit 402 to the memory 407, and controls each unit. The temperature recording control unit 410 is connected by an internal bus 411.

FIG. 6 shows the memory 407 and the connection terminal 2
Temperature alarm memory 412 for storing the temperature and the measurement time as a temperature alarm record when 1 becomes higher than the allowable temperature range, temperature measurement conditions, other data, and input at a predetermined measurement interval from the start of measurement History memory 413 for storing a temperature record based on the measured temperature value as a history.
And a program memory 414 for storing various programs
And a memory control unit 415 that controls writing and reading to and from each memory area. The history memory 413,
When the memory area becomes insufficient due to accumulation of temperature data or the like, storage of the temperature data is stopped depending on the measurement conditions, or the oldest data is erased and the latest data is stored.

FIG. 7A shows a control block of the temperature recording device 30. The temperature recording unit 40, the wireless communication unit 60, and the power supply unit 70 are controlled by the main control unit 80. The main control unit 80 includes an interface (I / F) not shown.
It is formed so that it can be connected to a terminal device such as a personal computer to input data necessary for initial settings and the like. The power supply unit 70 supplies appropriate power from the battery 50 based on a power supply signal input from the main control unit 80 during a temperature measurement operation, a communication operation, and a standby state when not operating. From battery 50
The battery remaining value is output when a request is made for the remaining amount. The temperature recording unit 40 has a main control unit 80 prior to installation on site.
Initial setting values such as a measurement time interval by a terminal device connected to the I / F unit, a temperature alarm setting for storing a temperature record when abnormal heat generation is detected as a temperature alarm record, a time zone during which temperature measurement is not performed, and the like. The temperature is measured and recorded based on the temperature. Further, when the temperature alarm record of the connection terminal 21 is obtained, a transmission request signal of the temperature alarm record is output to the main control unit 80.

FIG. 7B shows a signal transmission system between the temperature recording device 30 and the external monitoring device 101.
Numeral 0 encodes the temperature record data obtained based on the temperature measurement of the connection terminal 21 and transmits it to the receiving slave station 90 provided near the switch using radio waves in the 315 MHz frequency band. The receiving slave station 90 photoelectrically converts the received temperature recording data and transmits the data to the monitoring device 101 via the optical fiber cable 100. The monitoring device 101 is, for example, a personal computer having devices such as a keyboard, a storage medium, a display device, and a CR-ROM, and analyzes the transmitted temperature recording data to determine the temperature of the connection terminal 21.
Obtain the measurement time and temperature change. The monitoring device 10
It is also possible to change the setting of the temperature recording operation by transmitting signals of various setting values from 1 to the receiving slave station 90 as necessary, and wirelessly transmitting the setting values from the receiving slave station 90 to the temperature recording device 30. is there. In the figure, the receiving slave station 90 is 1
Although illustrated as performing wireless communication with one temperature recording device 30, it is also possible to perform wireless communication with a plurality of temperature recording devices 30.

Hereinafter, the operation of the temperature recording device for power transmission equipment of the present invention will be described with reference to the drawings.

(1) Input of Initial Setting Values The operator inputs an I / O to the main control unit 80 of the temperature recording device 30.
The temperature recording device 30 is initialized by connecting a terminal device via the F section and performing an input operation. This initialization operation can be performed by the monitoring apparatus 101, for example. The main control unit 80 reads the serial number stored in the ID unit 404 of the temperature recording unit 40 at the time of initialization.
After the initialization, the alarm temperature in the temperature recording unit 40 from the terminal device, the first measurement interval in normal operation (for example, 1 hour), the measurement time zone, the second measurement interval after the alarm temperature is measured (for example, 5 minutes) and other temperature measurement conditions, receiving slave station 9
Initial settings such as a communication interval with 0 (for example, once every half day) and a communication procedure are performed. In addition, it associates the ID with the ID uniquely assigned to the receiving slave station 90 that performs communication. The main control unit 80
These initial setting values are stored in a built-in memory (not shown).

After the initial setting, the local worker sets the temperature recording unit 40
The insulating member 48 is attached to the temperature-sensitive surface with an adhesive or the like. Next, the temperature recording device 30 is attached to the surface of the connection terminal 21. The worker places the insulating member 4 on the surface of the connection terminal 21.
One of the nuts 20 is inserted into the hole 30F of the fixing portion 30A so that the surfaces 8 are evenly contacted with each other, and the screw 24 is tightened after the temperature recording portion 40 is positioned so as to be arranged at the center of the connection terminal 21. . Next, the nut 25 is tightened so that the screw 24 is not loosened. The local worker requests test communication from an operator who operates the monitoring apparatus 101 after the installation work is completed, and causes the monitoring apparatus 101 to output a serial number request signal. The receiving slave station 90 transmits a radio wave based on a serial number request signal input from the monitoring device 101 via the optical fiber cable 100. When receiving the serial number request signal, the main control unit 80 reads out the serial number stored in the memory and transmits it. The receiving slave station 90 receives the radio wave based on the transmitted serial number, performs photoelectric conversion, and transmits the received radio wave to the monitoring device 101 via the optical fiber cable 100. The operator checks whether or not the serial number received by the monitoring device 101 is the temperature recording device 30 to be communicated. The communication with the monitoring apparatus 101 is performed in this way, and it is checked whether interference or communication failure has occurred.

(2) Temperature Measurement Operation The temperature recording section 40 measures the temperature of the connection terminal 21 at a first measurement interval based on an initial set value. The temperature recording unit 40
The temperature of the connection terminal 21 is detected by the temperature sensor 408 from the surface of the connection terminal 21 via the insulating member 48 via the temperature-sensitive surface, converted into an electric signal corresponding to the temperature by the measurement control unit 409, and stored in the history memory 413 of the memory 407. Are stored sequentially. At this time, the time data output from the clock control unit 402 is stored together as the measurement time. The power supply unit 70 supplies electric power necessary for the temperature recording unit 40 to perform temperature measurement and temperature recording, and after the operation is completed, supplies electric power from the battery 50 in a standby mode in which power consumption is low.

(3) Transmission of Temperature Record The main control unit 80 transmits the temperature record to the receiving slave station 90 by operating the radio communication unit 60 at the communication interval based on the initial setting value. In performing wireless communication, the receiving slave station 9
The serial number of the temperature recording unit 40 is transmitted to 0. Subsequently, the temperature records stored in the history memory 413 are sequentially transmitted based on radio waves. The receiving slave station 90 photoelectrically converts the received wave based on the temperature record, and transmits the signal light to the monitoring device 101 via the optical fiber cable 100.
In the monitoring apparatus 101, the received signal light is photoelectrically converted to analyze the temperature recording.

FIG. 8 shows a plurality of temperature recording devices 30-1 and 30-3.
0-2, 30-3, 30-4, 30-5, and 30-
6 shows a communication operation between the receiving slave station 90 and the receiving slave station 90, and FIG. The receiving slave station 90
The signal light received via the optical fiber cables 100A and 100B is photoelectrically converted, and is superimposed on a radio wave and transmitted.

FIG. 7B shows the operation of transmitting a temperature record by each temperature recording device. The main control unit 80 of each temperature recording device includes:
Based on a transmission request signal input from the wireless communication unit 60, the temperature recording unit 40 is requested to output a temperature record, and is transmitted to the receiving slave station 90 in the order shown in the figure. The receiving slave station 90 transmits the signal light obtained by photoelectrically converting the received radio wave to the monitoring device 101 via the optical fiber cables 100A and 100B. The monitoring device 101 analyzes the temperature record of the connection terminal 21 by receiving the signal light and performing photoelectric conversion.

(4) Transmission of temperature alarm record When the connection terminal 21 becomes high temperature beyond the allowable temperature range, the temperature recording section 40 uses the temperature and the measurement time as a temperature alarm record as a temperature alarm memory 412 of the memory 407. , And outputs a transmission request signal of the temperature alarm record to the main control unit 80. The main control unit 80 transmits the temperature alarm record to the receiving slave station 90 by operating the wireless communication unit 60 based on the transmission request signal. The temperature recording unit 40
Changes the temperature measurement interval after the abnormal heat generation is detected to the second measurement interval, and measures the temperature of the connection terminal 21.

According to the above-described embodiment of the present invention, the following operations and effects can be obtained. (1) Since the devices such as the lithium battery 50, the wireless communication unit 60, and the power supply unit 70 are stored in the watertight portion 30B of the temperature recording device 30, the connection is performed without being affected by environmental changes such as temperature and humidity. The temperature change of the terminal 21 can be accurately recorded. (2) When fixing the temperature recording device 30 to the connection terminal 21, the nut 20 for fixing the connection terminal 21 to the bus terminal 2.
Is fixed by the hole 30F and the screw 24 as a support member, so that the nut 20 can be easily mounted without loosening, and adjustment work such as positioning can be easily performed. It is also possible to fix to a support member other than the nut. (3) Since an opening is formed in the bottom of the temperature recording device 30 and the temperature recording unit 40 is mounted, the temperature recording unit 40 is mounted.
Is brought into close contact with the connection terminal 21 by the spring force of the signal input / output terminal 38 and the ground terminal 39. As a result, it is possible to prevent the contact state between the temperature-sensitive surface of the temperature recording unit 40 and the connection terminal 21 from being reduced by low-frequency vibration generated due to the AC power transmission, and to provide stable temperature detection. (4) Since the temperature of the connection terminal 21 and the measurement time are stored in the memory 407 of the temperature recording unit 40 in a time series, and when the temperature alarm record is obtained, it is immediately transmitted to the receiving slave station 90. It is possible to quickly know that a temperature abnormality has occurred in the connection terminal 21. When the temperature of the connection terminal 21 is in the normal temperature range, the number of times of transmitting the temperature record to the receiving slave station 90 can be operated, for example, about once a day, thereby minimizing the communication frequency. It is possible to prevent power consumption from increasing. (5) An insulating member 48 having excellent thermal conductivity is interposed between the temperature recording unit 40 and the connection terminal 21 so that the temperature is evenly transmitted from the connection terminal 21 to the temperature-sensitive surface of the temperature recording unit 40. Become. Thus, it is possible to prevent temperature detection failure due to temperature unevenness on the temperature-sensitive surface. Further, it is possible to prevent the occurrence of potential difference corrosion due to the direct contact between the temperature recording unit 40 and the connection terminal 21. This insulating member 4
8 may be, for example, a film-like material or a paste-like material that can be attached with an adhesive or the like. (6) The wireless communication unit 60 accommodated in the watertight portion 30B of the temperature recording device 30 arranges the substrate surface of the substrate 62 in a direction orthogonal to the power supply direction, so that a strong electric field condition (for example, Shinkansen) Even under a power transmission condition of 30 kV for power transmission), it is difficult to be affected by the electric field, so that the wireless transmission of the temperature record can be stably performed. (7) By using a semiconductor type temperature sensor for the temperature recording unit 40, power consumption required for temperature measurement can be reduced. As a result, even if a battery is used as a power source, the maintenance period up to the end of the life can be lengthened, and the size of the temperature recording device can be reduced by using a small battery. If the battery is significantly depleted, the temperature rise at the location where the temperature recording device is installed is expected to be remarkable, and it is possible that some abnormality has occurred in the switch body or buspa. It is desirable to do.

In the embodiment of the present invention, the temperature recording device for measuring the temperature of the bus bus connected to the switch of the AC substation has been described. The present invention can be applied to the measurement of the temperature of a non-conductive member such as a main circuit connecting portion such as a container, a buspa, a clamp attached to a power transmission line, a substation, and an insulator.

[0037]

As described above, according to the temperature recording apparatus for power transmission equipment of the present invention, the temperature sensing surface of the temperature detecting means is fixed to the object to be measured by using the projection provided on the object to be measured. This allows easy installation and accurate recording of temperature changes of the measurement target without deteriorating temperature detectability due to environmental changes and aging, and promptly confirms that the measurement target has exceeded the allowable temperature range. You can know.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a switch of a power supply device according to an embodiment of the present invention.

FIG. 2 is a plan view of the temperature recording device according to the embodiment of the present invention.

FIG. 3A is an internal structural view of a temperature recording device 30 according to an embodiment of the present invention in which an upper portion is opened; FIG. 3B is a temperature recording device 3 cut along a line bb in FIG.
0 internal structure diagram

FIG. 4A is a perspective view of a temperature recording unit according to the embodiment of the present invention, and FIG. 4B is a cross-sectional view of the temperature recording unit according to the embodiment of the present invention.

FIG. 5 is a circuit configuration diagram of a temperature recording unit according to the embodiment of the present invention.

FIG. 6 is a configuration diagram of a memory of a temperature recording unit according to the embodiment of the present invention.

FIG. 7A is a control block diagram of a temperature recording device according to an embodiment of the present invention, and FIG. 7B shows a signal transmission system between the temperature recording device and a monitoring device according to the embodiment of the present invention. Schematic configuration diagram

FIG. 8 shows a communication operation of the temperature recording apparatus according to the embodiment of the present invention, where (a) shows a transmission request operation from a receiving slave station,
(B) is an explanatory diagram of a temperature recording transmission operation of each temperature recording device.

FIG. 9 is a schematic configuration diagram of a switch of a conventional power supply device.

FIG. 10 is a plan view of a connection terminal fixed to a buspa.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1, Buspa 2, Buspa 3, Movable electrode 4, Insulator 5A, Temperature recording device 5, Support member 6, Insulator 7, Support member 8, Insulator 9, Rotating shaft 10, Shaft support 11, Connecting rod 12 , Insulator 13, shaft support 14, connecting member 14 A, rotating shaft 1
5, base portion 16, rod member 16A, rotating shaft 16B, shaft connecting portion 17, driving direction changing member 17A, driving force transmitting member 1
7B, connecting pin 18, movable electrode driving member 18A, shaft connecting portion 19, power transmission cable 20, nut 21, connection terminal 22, thermo label 22A, temperature index 22B, temperature index 22C, temperature indicating section 23, bolt 24, screw 25, Nut 26, washer 27, spring washer 28, washer 3
0, temperature recording device 30A, fixed portion 30B, watertight portion 30C, base portion 30D, dent portion 30E, seal member 30F, hole portion
31, screw 32, support member 33, conductive member 34, conductive member 3
5, support member 36, seal member 37, partition member 38, signal input / output terminal 39, ground terminal 40, temperature recording section 41, signal input / output section 42, ground terminal section 43, flange section 44, lithium battery 45, semiconductor chip 46, bump 47, circuit board 48, insulating member 49, sealing member 50, lithium battery 50, battery 60, wireless communication section 61, semiconductor device 62, substrate 70, power supply section 80, main control section 9
0, receiving slave station 100, optical fiber cable 100A, optical fiber cable 100B, optical fiber cable 101, monitoring device 401, oscillator 402, clock control unit 403, register 404, ID unit 405, I / F unit 406, power supply unit 407, memory 408 , Temperature sensor 409, measurement control unit 410, temperature recording control unit 411, internal bus 412,
Temperature alarm memory 413, history memory 414, program memory 415, memory control unit

Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) // G01K 7/01 G01K 7/00 391Z (72) Inventor Toshiaki Igashi 2-2-2 Yoyogi Shibuya-ku, Tokyo East Inside Japan Passenger Railway Co., Ltd. (72) Koji Taguchi, Inventor 2-6-1 Marunouchi, Chiyoda-ku, Tokyo Furukawa Electric Co., Ltd. (72) Inventor Shigeichi Kawai 2-5-Keihanhondori, Moriguchi-shi, Osaka No.5 Sanyo Electric Co., Ltd. F term (reference) 2F056 AE01 AE05 CL07 2F070 CC04 CC11 DD14 GG07 HH02 HH07 2F073 AA02 AA40 AB02 AB12 BB01 BC02 CC03 CD11 GG01 GG04

Claims (7)

[Claims] 1. A temperature detecting means which is attached to a power transmission facility such as a switch and measures a temperature at predetermined measurement intervals to generate a temperature detection signal, and a projection provided on the temperature measurement target as a support member. Fixing means for fixing the temperature-sensitive surface of the temperature detecting means in close contact with the object to be measured; provided on a mounting portion of the temperature detecting means for storing a temperature record such as a measurement temperature and a measurement time based on the temperature detection signal. A communication unit having a transmitting unit that wirelessly transmits the temperature record; and a control unit that wirelessly transmits the temperature record stored in the memory unit to the communication unit at a predetermined transmission interval. Temperature recording equipment for power transmission equipment. 2. The temperature detecting means according to claim 1, wherein said temperature detecting means is fixed by interposing an insulating member having good thermal conductivity between said temperature sensing surface and said object to be measured. Temperature recorder for power transmission equipment. 3. The fixing member according to claim 1, wherein the fixing member has a hole capable of accommodating a nut protruding from the surface of the object to be measured as a supporting member as a support member, and the nut accommodated in the hole is tightened to form the hole. The temperature recording device for power transmission equipment according to claim 1, further comprising a screw member fixed to the inner wall. 4. The power transmission equipment according to claim 1, wherein said temperature detection means, said memory means, said communication means, and said control means are housed in the same housing and fixed to said power transmission equipment. Temperature recording equipment for power transmission equipment. 5. The memory means has a history memory for storing the temperature records in a time series and a temperature alarm memory for storing a temperature record out of a normal temperature range as a temperature alarm record in a time series. The temperature recording device for power transmission equipment according to claim 1. 6. The temperature recording device for power transmission equipment according to claim 1, wherein said communication means has a receiving unit for receiving the temperature recording output command from an external monitoring device. 7. When a temperature alarm record out of a normal temperature range is obtained, the control means causes the communication means to wirelessly transmit the temperature alarm record and performs the measurement at a measurement interval smaller than the predetermined measurement interval. 2. A temperature recording device for power transmission equipment according to claim 1, wherein said temperature detecting means performs temperature measurement.