JP4936846B2 - Insulating spacer for IC tag with sensor - Google Patents

Description

  The present invention relates to an insulating spacer, and in particular, an IC tag-equipped with sensor that improves measurement accuracy, reliability, and safety by detecting physical quantities such as partial discharge and temperature using an IC tag with a sensor. It relates to a spacer.

  In recent years, as a high-voltage circuit switchgear and power transmission device constituting a substation, a high-voltage conductor is disposed in a metal container at a ground potential, and gas insulation is formed by compressing and filling a gas insulator in the metal container. Many switchgears and pipeline airborne power transmission devices are used. In these gas-insulated switchgears (GIS: Gas Insulation Switch) and in-pipe in-situ power transmission devices, insulating spacers are used to insulate and support the high-voltage conductor in the ground metal container.

  An example of an insulating spacer used for insulatingly supporting a high-voltage conductor in a grounded metal container of a gas-insulated switchgear and a pipeline air power transmission device is disclosed in Japanese Patent Publication No. 54-44106 (Patent Document 1) and This is disclosed in Japanese Patent Application Laid-Open No. 55-155512 (Patent Document 2).

  The conventional insulating spacer disclosed in the above patent document is made of, for example, a synthetic resin such as an epoxy resin, and the insulating spacer body supports the high voltage conductor. The flange portion of the insulating spacer is provided with a hole for fixing the insulating spacer to the ground metal container. The insulating spacer fixing hole is formed by providing a bolt fixing hole in the insulating spacer directly in the flange part of the insulating spacer, or by attaching a metal flange part with a bolt fixing hole processed to the flange part of the insulating spacer. The

For example, an insulating gas such as SF ₆ (sulfur hexafluoride) sealed in the ground metal container tends to have a reduced insulating performance when the electric field is not uniform. Therefore, in order to prevent a decrease in insulation performance, a ground shield is integrally embedded around the high-voltage conductor, and the potential is often secured by the metal flange portion.

  FIG. 16 is a front view showing an attached state of an example (insulating spacer 100) of a conventional general cone-shaped insulating spacer.

As shown in FIG. 16, the cone-shaped insulating spacer 100 insulates and supports the high-voltage conductor 101 in a ground metal container 103 in which an insulating gas 102 such as SF ₆ gas is sealed. The ground metal container 103 is provided with a connection flange 105 for connecting adjacent ground metal containers 103 to each other. In FIG. 16, a mounting bolt 107 (shown in FIG. 17 to be described later) for interconnecting the ground metal container 103 is omitted.

  17 is a longitudinal sectional view of the insulating spacer 100 shown in FIG. 16 in the direction along the line II.

As shown in FIG. 17, the cone-shaped insulating spacer 100 insulates and supports the high-voltage conductors 101a and 101b in a ground metal container 103 in which an insulating gas 102 such as SF ₆ gas is sealed. The insulating spacer 100 is integrally cast with a current-carrying member 104 that joins adjacent high-voltage conductors 101a and 101b.

  A metal flange 106 is integrally cast on the outer edge portion of the insulating spacer 100. The insulating flange 100 is fixed to the ground metal container 103 by the metal flange 106 being sandwiched between the connecting flanges 105 formed on the ground metal container 103 and being fixed by the mounting bolts 107.

  In addition, the conductive ring 108 corresponding to the above-described ground shield is integrally cast on the insulating spacer 100. Since the conductive ring 108 is always grounded, the electric field at the joint between the grounded metal container 103 and the insulating spacer 100 is relaxed, and the insulating performance is improved. Note that the O-ring 109 shown in FIG. 17 is disposed so as to be interposed between the insulating spacer 100 and the ground metal container 103, and keeps the container airtight.

  On the other hand, partial discharge may occur due to the presence of various defects in the gas insulated switchgear to which the conventional insulating spacer 100 is attached. The main causes of partial discharge include defects such as dents on the surface of the high voltage conductor, metal foreign matter mixed inside during assembly or transportation, poor contact of the high voltage conductor due to assembly errors, and voids in the insulating spacer 100. Such defects can be considered.

  Due to these factors, when an unequal electric field is formed in the gas insulating device, a partial discharge may occur during operation, and eventually a serious situation may occur in which the entire path in the gas insulating device is destroyed. Therefore, it is necessary to reliably detect partial discharge before the entire path is destroyed to prevent the entire path from being destroyed.

  Various partial discharge detection methods for detecting a partial discharge generated inside a gas-insulated device have been developed from the background described above. As one of them, there is a partial discharge detection method in which partial discharge is detected by taking out a signal of a specific frequency that is included in electromagnetic waves generated by the partial discharge and is less likely to contain noise.

  FIG. 18 is a configuration diagram illustrating an example of a gas insulating device and a partial discharge detector to which a partial discharge detection method for extracting a signal of a specific frequency is applied.

  A gas insulating device 110 shown in FIG. 18 includes a plurality of cylindrical high-voltage conductors 101a and 101b, and insulating spacers 100 that electrically divide each ground metal container 103. Are connected via an insulating spacer 100. Further, inside the ground metal container 103, high voltage conductors 101a and 101b as high voltage charging portions electrically connected to a transmission line (not shown) are arranged on the central axis and supported by the insulating spacer 100. ing. The ground metal container 103 is grounded by a ground wire (not shown in FIG. 18).

  The insulating spacer 100 is provided with a conductive ring 108 for voltage detection, and a stray capacitance C 2 exists between the conductive ring 108 and the ground metal container 103. A partial discharge detector 117 is connected to both terminals of the stray capacitance C 2, that is, the conductive ring 108 and the ground metal container 103 through a signal lead-in line 116.

  The partial discharge detector 117 drives a filter 118 that extracts a signal of a specific frequency, an amplifier circuit 119 that amplifies the extracted signal, a peak detector and integration circuit 120 that detects a peak value of the signal, and these circuits. And a power source 121.

  The operation of the conventional partial discharge detector 117 thus configured will be described.

When a high voltage is applied to the high-voltage conductor 101, the stray capacitance C1 that exists between the high-voltage conductor 101 and the conductive ring 108, and the stray capacitance C2 that exists between the conductive ring 108 and the ground metal container 103. Constitute a voltage divider, and a shared voltage is generated across the stray capacitance C2. When a partial discharge pulse (corona pulse) is generated in the ground metal container 103, a high-frequency component (signal) resulting from the partial discharge is superimposed on the shared voltage of the stray capacitance C2, and the partial discharge is performed via the signal lead-in line 116. Input to the detector 117. In the partial discharge detector 117, first, a specific frequency signal corresponding to the partial discharge pulse is extracted from the signal including the high-frequency component as described above by the filter 118, amplified by the amplifier circuit 119, and then the peak detector and The signal is output to the outside of the detector 117 via the integration circuit 120. That is, it can be detected from this output signal that partial discharge has occurred inside the gas-insulated equipment.
Japanese Examined Patent Publication No. 54-44106 Japanese Patent Laid-Open No. 55-155512

  However, when the conventional partial discharge detection method shown in FIG. 18 is employed, one of the detection terminals (measurement terminals) of the partial discharge detector 117 is grounded (the grounded metal container 103) in order to constantly observe the partial discharge. And the other one needs to be attached to the conductive ring 108 inside the insulating spacer 100. Therefore, the conventional partial discharge measuring device 117 has a large number of parts and a long internal wiring. As a result, the long-term reliability is low, the probability of generating an erroneous signal is relatively higher than that of the GIS, and a separate power source is required.

  In addition, the high frequency associated with the operation of the switchgear enters from the power supply 121 side of the partial discharge detector 117 and the signal is hidden by noise, resulting in a decrease in measurement accuracy. Furthermore, intrusion of high frequency has increased the failure probability of the partial discharge detector 117 in the long run.

  Furthermore, in order to measure a periodic partial discharge, it is necessary to approach the GIS in operation and connect the measurement terminal of the partial discharge detector 117 to the conductive ring 108 inside the insulating spacer 100. It was a situation that could cause electric shock.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide an IC tag-applied insulating spacer with a sensor that improves the measurement accuracy, reliability, and safety of partial discharge measurement as compared with the prior art. And

  As an example of a conventional insulating spacer, as shown in FIG. 17, the insulating spacer 100 with the metal flange 106 and the electrostatic ring (conductive ring) 108 has been described. For example, FIG. As shown in FIG. 20, a type with a metal flange 106 and without an electrostatic ring 108, a bush type without a metal flange 106 as shown in FIG. 20 and a type with an electrostatic ring 108, and a metal as shown in FIG. The same applies to an insulating spacer of a type different from the insulating spacer 100 shown in FIG. 17, such as a bush type without the flange 106 and a type without the electrostatic ring 108.

  FIGS. 17, 19, 20, and 21 are longitudinal sections in the direction along the II line at the mounting hole portion at both the upper and lower portions as shown in the front view of the spacer in FIG. However, in FIG. 18, for the convenience of explanation, a longitudinal section in the direction along the line II-II is shown.

  In order to solve the above-described problems, the IC tag applied insulating spacer with sensor according to the present invention is used to insulate and support members within a container of an electric device such as a gas-insulated switchgear or a pipeline air power transmission device. In the insulating spacer, the sensor-attached IC tag is attached together with the O-ring in an airtight mounting groove of the container provided in the insulator portion of the insulating spacer.

In order to solve the above-described problem, the IC tag applied insulating spacer with sensor according to the present invention is for insulatingly supporting members in a container of an electric device such as a gas-insulated switchgear or a pipeline air power transmission device. In the insulating spacer to be used, the insulating spacer is attached to the outer peripheral end of the insulating portion of the insulating spacer in a state where the IC tag with sensor is covered with an IC tag protector, and the IC tag protector is attached with the sensor. It is a conductive elastomer that transmits electromagnetic waves for communication of an IC tag, and is configured by selecting a reciprocal of a time constant of the conductive elastomer within a range in which an electric field is not disturbed by an alternating current at a commercial frequency .
Furthermore, in order to solve the above-described problems, the IC tag applied insulating spacer with sensor according to the present invention is for insulatingly supporting members within a container of an electric device such as a gas insulated switchgear or a pipeline air power transmission device. In the insulating spacer to be used, the insulating spacer is provided with a hole in an insulating portion of the insulating spacer, and the hole is provided with a conductive elastomer through which electromagnetic waves for communication of the sensor-attached IC tag are transmitted. And is constructed by selecting the reciprocal of the time constant of the conductive elastomer within a range in which the electric field is not disturbed by the alternating current at the commercial frequency .

  Furthermore, in order to solve the above-described problem, the IC tag-equipped insulating spacer with sensor according to the present invention is configured by attaching the IC tag with sensor to a hole provided in the insulating spacer in order to fasten with the connecting flange. It is characterized by.

Furthermore, the IC tag applied insulating spacer with sensor according to the present invention insulates and supports members in a container of an electric device such as a gas insulated switchgear or a pipeline air power transmission device in order to solve the above-described problems. In the insulating spacer used in the present invention, the insulating spacer is formed by providing a conductive ring for controlling the potential inside the insulating spacer and attaching an IC tag with a sensor to the conductive ring.
In order to solve the above-described problem, the IC tag applied insulating spacer with sensor according to the present invention is for insulatingly supporting members in a container of an electric device such as a gas-insulated switchgear or a pipeline air power transmission device. In the insulating spacer used, the insulating spacer has an IC tag with a sensor attached to a mounting groove of an O-ring used for airtightness of the container provided in an insulating portion of the insulating spacer, and an electromagnetic wave is attached to a portion to be fastened with a connecting flange. It is characterized by being configured by attaching a metal flange provided with a hole through which is transmitted in the outer circumferential direction .
In order to solve the above-described problem, the IC tag applied insulating spacer with sensor according to the present invention is for insulatingly supporting members in a container of an electric device such as a gas-insulated switchgear or a pipeline air power transmission device. In the insulating spacer to be used, the insulating spacer has a metal flange provided with a hole through which electromagnetic waves are transmitted in a portion to be fastened with the connecting flange, and is mounted between the metal flange and the insulating portion of the insulating spacer. A conductive layer is provided, and an IC tag with a sensor is attached between the conductive layer and the insulating portion of the insulating spacer .

  As an example of an IC tag-equipped insulating spacer with sensor according to the present invention, when an insulating spacer to which an IC tag with a partial discharge sensor is applied is attached to a gas-insulated switchgear (GIS), the measurer is not in contact with the GIS even during GIS operation. The partial discharge can be measured as it is. In addition, as an example of an IC tag-equipped insulating spacer with sensor according to the present invention, when an insulating spacer to which an IC tag with a temperature sensor is applied is attached to a GIS, the temperature can be continuously measured. Temperature measurement is possible without contact. That is, the sensor-equipped IC tag application insulating spacer according to the present invention eliminates the risk of electric shock to the measurer and improves safety during measurement.

  In addition, since the IC tag with sensor does not have an external power supply line, there is no worry about noise from the power line and the number of parts is small, so it has long-term reliability and malfunctions even after long-term use. The possibility is extremely small. Therefore, by applying the present invention, it is possible to provide a power switch and an operation monitoring device for the device that have improved the monitoring accuracy and reliability of state monitoring as compared with the conventional case.

  A best mode (embodiment) for carrying out an insulating spacer (an IC tag applied insulating spacer with a sensor) to which an IC tag with a sensor according to the present invention is applied will be described with reference to the accompanying drawings.

  FIG. 1 is a front view showing a mounting state of an IC tag applied insulating spacer (hereinafter simply referred to as an insulating spacer) 1 according to the present invention.

As shown in FIG. 1, the insulating spacer 1 insulates and supports the high voltage conductor 2 in a ground metal container 4 in which an insulating gas such as SF ₆ (sulfur hexafluoride) gas is sealed. The ground metal container 4 is provided with a connection flange 5 for connecting adjacent ground metal containers 4 to each other. In FIG. 1, a fixture 7 such as a bolt for interconnecting the ground metal container 4 (shown in FIG. 2 described later) is omitted.

  Further, since the mounting state of the insulating spacer 1 is common regardless of the embodiment, the description of the mounting state of the insulating spacer 1 is omitted in the description of each embodiment, and the II line or II-II shown in FIG. A description will be given with reference to a longitudinal sectional view in a direction along the line.

[First Embodiment]
FIG. 2 is a longitudinal sectional view of an insulating spacer (hereinafter referred to as a first insulating spacer) 1A to which the IC tag with sensor according to the first embodiment of the present invention is applied, and the first insulating spacer 1A. It is explanatory drawing explaining the attachment state of.

  2, the upper half is a vertical cross-section in the direction along the line II-II shown in FIG. 1, and the lower half is a vertical cross-sectional view in the direction along the line II. The first insulating spacer 1A shown in FIG. 2 is an example of a bush type that has neither a metal flange nor an electrostatic ring.

The first insulating spacer 1A insulates and supports the high voltage conductors 2a and 2b in a ground metal container 4 in which an insulating gas 3 such as SF ₆ gas is enclosed. The first insulating spacer 1A is integrally cast with a current-carrying member 6 for joining adjacent high-voltage conductors 2a and 2b. Further, the ground metal container 4 is provided with a connection flange 5 for connecting adjacent ground metal containers 4 to each other.

  In this first insulating spacer 1A, an O-ring mounting groove 8 for gas sealing provided in an insulating portion of the first insulating spacer 1A is formed in an O-ring mounting groove 8 in order to fasten the ground metal container 4 by fastening with the connecting flange 5. A ring 9 is arranged and fastened by a fixture 7 such as a bolt. Further, a part of the O-ring mounting groove 8 is processed so as not to affect the airtightness, and the IC tag 10 with a partial discharge sensor, which is an example of a sensor, is detachably attached and fixed to the processed part. The partial discharge sensor of the IC tag 10 with the partial discharge sensor detects an electromagnetic field (at least one of an electric field and a magnetic field) of electromagnetic waves generated by the partial discharge.

  FIG. 3 is an explanatory diagram for explaining the configuration and relationship of the sensor-attached IC tag 10, the IC tag reader / writer 11, and the host device 12 of the sensor-equipped IC tag applicable insulating spacer according to the present invention. In FIG. 3, the solid lines shown in the sensor-equipped IC tag 10 and the IC tag reader / writer 11 indicate the flow of information, and the broken lines indicate the flow of energy.

  As shown in FIG. 3, the sensor-attached IC tag 10 includes an antenna 16 that transmits and receives electromagnetic waves including signals and information (hereinafter simply referred to as communication signals) 15 that communicate with the IC tag reader / writer 11, and the antenna 16. A modulation / demodulation unit 17 that modulates and demodulates received electromagnetic waves, a sensor 18 that detects and acquires a physical quantity, a memory 19 that stores information acquired by the sensor 18, a clock 20 that includes a timer, and an operating power A power supply unit 21 that supplies power, a battery 22 that supplies power to the power supply unit 21, and a control unit 23 that controls the sensor-attached IC tag 10 are provided.

  The modulation / demodulation unit 17 has a function (modulation function and demodulation function) for performing conversion suitable for recording, transmission, and the like on the transmitted / received signal 15 and a filter function for the communication signal 15, and is superimposed on the communication signal 15. Noise components due to partial discharge or the like can be removed. The memory 19 is a storage medium that stores information on the physical quantity detected by the sensor 18, and is configured by, for example, a nonvolatile memory. For example, the control unit 23 has information necessary for control such as information related to the information storage procedure of the memory 19 and performs arithmetic processing.

  As an example, the sensor-equipped IC tag 10 employs a built-in battery 22 (active type). Therefore, it is assumed that the sensor-attached IC tag 10 itself is periodically replaced before the battery 22 is consumed. Further, the sensor-equipped IC tag 10 is normally configured not to transmit information such as measurement results unless the read signal 15 is received from the IC tag reader / writer 11.

  On the other hand, the IC tag reader / writer 11 communicates with the sensor-equipped IC tag 10 to read information from the memory 19 included in the sensor-attached IC tag 10 and information read function as an IC tag reader and information as an IC tag writer that writes information into the memory 19. Has a writing function. The IC tag reader / writer 11 includes an antenna 26 that transmits and receives a communication signal 15 with the sensor-equipped IC tag 10, a modulation / demodulation unit 27 that modulates and demodulates electromagnetic waves received via the antenna 26, and a power supply unit that supplies operating power 28 and a control unit 29 that controls the IC tag reader / writer 11.

  The sensor-attached IC tag 10 and the IC tag reader / writer 11 perform frequency modulation or digital modulation on electromagnetic waves, and transmit and receive various signals such as a data read start command signal and measurement results. This is to facilitate the distinction between noise due to partial discharge or the like and necessary signals or information.

  Further, the antenna 26, the modulation / demodulation unit 27, the power supply unit 28, and the control unit 29 of the IC tag reader / writer 11 are respectively connected to the antenna 16, the modulation / demodulation unit 17, the power supply unit 21, and the control unit 23 of the sensor-attached IC tag 10. It is a component that performs substantially the same operation.

  The IC tag reader / writer 11 can read information from the sensor-equipped IC tag 10 by wireless communication with the sensor-equipped IC tag 10 by transmitting the read signal 15 to the sensor-equipped IC tag 10. The measurement data received by the IC tag reader / writer 11 from the sensor-attached IC tag 10 is input to a host device 12 such as a computer via a cable or a portable storage memory.

  FIG. 4 is an explanatory diagram illustrating an example of an information configuration stored in the memory 19 of the IC tag 10 with the partial discharge sensor.

  Examples of information stored in the memory 19 include, as shown in FIG. 4, the maximum data capacity, the number of retained data, the previous data erasing date and time, the serial number (No.), the number of data storage areas (for example, 1024 areas), And IC tag identification information (IC tag ID number) information.

  In the case of the memory 19 of the IC tag 10 with a partial discharge sensor, the partial discharge sensor is associated with one of the serial numbers, and the electromagnetic field of the electromagnetic wave generated by the partial discharge in one data storage area corresponding to the one serial number. Is stored in correspondence with the measurement time. In the case of the memory 19 shown in FIG. 4, since 1024 measurement results can be stored in one data storage area, if all 1024 data storage areas are used, 1024 areas × 1024 data are stored. it can.

  Next, the operation of the first insulating spacer 1A will be described.

  When partial discharge occurs inside the gas insulating device to which the first insulating spacer 1A is applied, electromagnetic waves resulting from the partial discharge are diffused to the surroundings. This electromagnetic wave travels in the grounded metal container 4 of the gas insulating device, passes through the first insulating spacer 1A, and leaks the electromagnetic wave caused by the partial discharge to the outside of the gas insulating device. The leaking electromagnetic wave is detected by the partial discharge sensor 18 of the IC tag 10 with the partial discharge sensor attached to the O-ring attachment groove 8. The magnitude of the partial discharge detected by the partial discharge sensor 18 is stored in the memory 19.

  When the identification information (IC tag ID number) of the IC tag 10 with the partial discharge sensor is stored in the memory 19, the information on the size of the partial discharge thus recorded is the identification information of the IC tag 10 with the sensor. When at least one of the identification information of the IC tag reader / writer 11 matches, the IC tag reader / writer 11 can read / write the memory of the IC tag 10 with the partial discharge sensor. That is, when the IC tag reader / writer 11 applies a high frequency signal from the outside to the IC tag 10 with the partial discharge sensor by electromagnetic waves, the IC tag 10 with the partial discharge sensors can transmit information to the outside by the electromagnetic waves. In this way, measurement / monitoring is performed without changing the state of the device by reading the information from a distance with electromagnetic waves.

  The start command signal from the IC tag reader / writer 11 to the IC tag 10 with the partial discharge sensor and the data transmission from the IC tag 10 with the partial discharge sensor to the IC tag reader / writer 11 at the time of reading are frequency-modulated or digitally modulated to electromagnetic waves. Has been given.

  According to the first insulating spacer 1A, the electromagnetic field magnitude (measurement result) of the electromagnetic wave generated due to the partial discharge generated in the gas-insulated equipment to which the first insulating spacer 1A is applied is determined as an IC with a partial discharge sensor. By recording in the memory 19 of the tag 10, it is possible to record the trend of partial discharge. Moreover, since the electromagnetic waves generated due to the partial discharge trigger the IC tag 10 with the partial discharge sensor, a special power source for continuous detection becomes unnecessary.

  Although the insulating spacer 1A exists between the IC tag reader / writer 11 outside the gas insulating device to which the first insulating spacer 1A is applied and the IC tag 10 with the partial discharge sensor, the electromagnetic wave for communication is insulated spacer 1A. Therefore, the insulating spacer 1A can communicate with the external IC tag reader / writer 11 without hindering communication.

  In addition, if the IC tag 10 with a sensor receives an electromagnetic wave for data communication irradiated from the IC tag reader / writer 11 to the IC tag 10 with a partial discharge sensor via the antenna 16, the electromagnetic wave is received. Is acquired by the control unit 23 via the antenna 16 and the modulation / demodulation unit 17, and the calibration signal of the clock 20 can be generated based on the acquired time information to calibrate the time, so that the IC tag reader / writer 11 The time of the clock 20 can be calibrated every time the electromagnetic wave is transmitted and the information is read and written.

  The start command signal from the IC tag reader / writer 11 to the IC tag 10 with the partial discharge sensor and the data transmission from the IC tag 10 with the partial discharge sensor to the IC tag reader / writer 11 at the time of reading are subjected to frequency modulation or digital modulation to the electromagnetic waves. Therefore, it is possible to easily distinguish between noise due to partial discharge and the like and a communication signal 15 such as a read / write start command signal with the IC tag reader / writer 11.

[Second Embodiment]
FIG. 5 is a longitudinal sectional view of an insulating spacer (hereinafter referred to as a second insulating spacer) 1B to which the IC tag with sensor according to the second embodiment of the present invention is applied, and the second insulating spacer 1B. It is explanatory drawing explaining the attachment state of.

  In the longitudinal sectional view shown in FIG. 5, the upper half is a longitudinal section in the direction along the line II-II shown in FIG. 1, and the lower half is a longitudinal sectional view in the direction along the line II. The second insulating spacer 1B shown in FIG. 5 is an example of a bush type that has neither a metal flange nor an electrostatic ring.

  The second insulating spacer 1B is different from the first insulating spacer 1A in the mounting position and mounting mode of the IC tag 10 with a partial discharge sensor, but the other points are not substantially different. Therefore, substantially the same components as those of the first insulating spacer 1A are denoted by the same reference numerals and description thereof is omitted.

  In the insulating spacer 1B, an IC tag 10 with a partial discharge sensor is disposed on the outer (outer diameter side) end of the insulating spacer between the connecting flanges 5 to cover and protect the IC tag 10 with the partial discharge sensor. An insulating protective body 31 is provided as a body. That is, the IC tag 10 with a partial discharge sensor is fixed to the outside of the insulating spacer between the connecting flanges 5 while being embedded in the insulating protective body 31. Here, the insulating protector 31 is made of an insulating material such as an epoxy resin, for example.

  Next, the operation of the second insulating spacer 1B will be described.

  When a partial discharge occurs inside the gas insulated switch (GIS) to which the second insulating spacer 1B is applied, electromagnetic waves resulting from the partial discharge are dissipated around. This electromagnetic wave travels in the ground metal container 4 made of GIS metal, passes through the second insulating spacer 1B, and the electromagnetic wave caused by the partial discharge leaks outside the GIS. The electromagnetic wave leaking from the GIS is detected by the IC tag 10 with the partial discharge sensor attached to the outside of the second insulating spacer 1B. After detecting the leakage of the electromagnetic wave due to the partial discharge, it is the same as the case where the first insulating spacer 1A is applied.

  According to the gas insulating apparatus to which the second insulating spacer 1B is applied, the same operations and effects as those of the gas insulating apparatus to which the first insulating spacer 1A is applied can be obtained.

[Third Embodiment]
FIG. 6 is a longitudinal sectional view of an insulating spacer (hereinafter, referred to as a third insulating spacer) 1C to which an IC tag with a sensor according to a third embodiment of the present invention is applied, and the third insulating spacer 1C. It is explanatory drawing explaining the attachment state of.

  In the longitudinal sectional view shown in FIG. 6, the upper half is a longitudinal section in the direction along the line II-II shown in FIG. 1, and the lower half is a longitudinal sectional view in the direction along the line II. Further, the third insulating spacer 1C shown in FIG. 6 is an example of a bush type having neither a metal flange nor an electrostatic ring.

  The third insulating spacer 1C is different from the second insulating spacer 1B in that it includes a conductive protector 33 as an IC tag protector instead of the insulating protector 31, but the other points are substantially different. There is no difference. Therefore, substantially the same components as those of the second insulating spacer 1B are denoted by the same reference numerals and description thereof is omitted.

  In the third insulating spacer 1C, an IC tag 10 with a partial discharge sensor is disposed at the outer (outer diameter side) end of the insulating spacer between the connecting flanges 5 to cover and protect the IC tag 10 with a partial discharge sensor. A conductive protector 33 is provided. That is, the IC tag 10 with the partial discharge sensor is fixed to the outside of the insulating spacer between the connecting flanges 5 while being embedded in the conductive protection body 33.

  For the conductive protector 33, for example, a conductive elastomer is used. Here, the elastomer is a generic term for synthetic rubber and elastic plastic, and the conductive elastomer is a generic term for synthetic rubber and elastic plastic exhibiting conductivity.

  The time constant (represented by the product of resistivity [Ω · m] and dielectric constant [F / m]) of the conductive protector 33 is sufficiently larger than the reciprocal of the frequency of the antenna that detects the partial discharge. Is used.

  Next, the operation of the third insulating spacer 1C will be described.

  When partial discharge occurs inside the gas insulated switch (GIS) to which the third insulating spacer 1C is applied, electromagnetic waves resulting from the partial discharge are dissipated around. This electromagnetic wave travels through the ground metal container 4 made of GIS metal, passes through the third insulating spacer 1C, and leaks the electromagnetic wave caused by the partial discharge to the outside of the GIS. The electromagnetic wave leaking from the GIS is detected by the IC tag 10 with a partial discharge sensor attached to the outside of the third insulating spacer 1C.

  Since the conductive protector 33 is made of a conductive material having a time constant sufficiently larger than the reciprocal of the frequency of the antenna that detects the partial discharge, electromagnetic waves leaking from the GIS are transmitted through the conductive protector 33. Can do. Therefore, the IC tag with partial discharge sensor 10 attached to the outside of the third insulating spacer 1C so as to be covered with the conductive protector 33 can detect electromagnetic waves leaking from the GIS. After detecting the leakage of the electromagnetic wave due to the partial discharge, it is the same as the case where the second insulating spacer 1B is applied.

  According to the gas insulation apparatus to which the third insulating spacer 1C is applied, the conductive protector 33 has a time constant sufficiently larger than the reciprocal of the frequency of the antenna that detects the partial discharge, that is, the reciprocal of the time constant is commercial. Since it is made of a conductive material sufficiently smaller than the AC frequency, the presence of the IC tag with sensor does not disturb the electric field due to commercial AC, and the sensor IC tag 10 itself causes partial discharge. Never become. The other functions and effects obtained are the same as those of the gas insulating apparatus to which the second insulating spacer 1B is applied.

[Fourth Embodiment]
FIG. 7 is a longitudinal sectional view of an insulating spacer (hereinafter referred to as a fourth insulating spacer) 1D to which an IC tag with a sensor according to a fourth embodiment of the present invention is applied, and the fourth insulating spacer 1D. It is explanatory drawing explaining the attachment state of.

  In the longitudinal sectional view shown in FIG. 7, the upper half is a longitudinal section in the direction along the line II-II shown in FIG. 1, and the lower half is a longitudinal sectional view in the direction along the line II. Further, the fourth insulating spacer 1D shown in FIG. 7 is an example of a bush type having neither a metal flange nor an electrostatic ring.

  The fourth insulating spacer 1D is different from the third insulating spacer 1C in that the conductive protector 33 is embedded outside the insulating spacer, but the other points are not substantially different. Therefore, substantially the same components as those of the third insulating spacer 1C are denoted by the same reference numerals and description thereof is omitted.

  In the fourth insulating spacer 1D, the tip is rounded off from the outside (outer diameter side) of the insulating spacer between the connecting flanges 5, and the IC tag with a partial discharge sensor is attached to the shaved portion by a conductive protector 33. 10 is buried. The time constant of the conductive protector 33 is a value sufficiently larger than the reciprocal of the frequency of the antenna that detects the partial discharge.

  According to the gas insulating apparatus to which the fourth insulating spacer 1D is applied, the same operations and effects as those of the gas insulating apparatus to which the third insulating spacer 1C is applied can be obtained.

[Fifth Embodiment]
FIG. 8 is a longitudinal sectional view of an insulating spacer (hereinafter referred to as a fifth insulating spacer) 1E to which an IC tag with a sensor according to a fifth embodiment of the present invention is applied, and a fifth insulating spacer 1E. It is explanatory drawing explaining the attachment state of.

  In addition, the longitudinal cross-sectional view shown by FIG. 8 is a longitudinal cross-sectional view of the direction where an upper half and a lower half follow an II line. Further, the fifth insulating spacer 1E shown in FIG. 8 is an example of a bush type having neither a metal flange nor an electrostatic ring.

  The fifth insulating spacer 1E covers and protects the IC tag 10 with a partial discharge sensor with respect to the third insulating spacer 1C, and is a layer formed by applying a conductive paint instead of the conductive protector 33. (Hereinafter, referred to as a conductive layer.) Although it differs in that it becomes 34, the other points are not substantially different. Therefore, constituent elements substantially the same as those of the fourth insulating spacer 1D are denoted by the same reference numerals and description thereof is omitted.

  In the fifth insulating spacer 1E, a conductive hole serving as an IC tag protector is provided on a contact surface of the fixing spacer (a hole for fixing the insulating spacer 1E through the fixture 7) between the connecting flanges 5 with the fixture 7. The sensor-attached IC tag 10 is attached to the layer 34. The time constant (expressed by the product of resistivity [Ω · m] and dielectric constant [F / m]) of the conductive layer 34 is sufficiently larger than the reciprocal of the frequency of the antenna that detects the partial discharge. Used.

  According to the gas insulating device to which the fifth insulating spacer 1E is applied, the same operations and effects as those of the gas insulating device to which the third insulating spacer 1C is applied can be obtained.

[Sixth Embodiment]
FIG. 9 is a longitudinal sectional view of an insulating spacer (hereinafter referred to as a sixth insulating spacer) 1F to which an IC tag with a sensor according to a sixth embodiment of the present invention is applied. It is explanatory drawing explaining the attachment state of.

  In the longitudinal sectional view shown in FIG. 9, the upper half is a longitudinal section in the direction along the line II-II shown in FIG. 1, and the lower half is a longitudinal sectional view in the direction along the line II.

  The sixth insulating spacer 1F is different from the first insulating spacer 1A in that it is applied to a bush type insulating spacer having a conductive ring (electrostatic ring) 38 for controlling the potential. Are not substantially different. Therefore, substantially the same components as those of the first insulating spacer 1A are denoted by the same reference numerals and description thereof is omitted.

  The sixth insulating spacer 1F includes a conductive ring 38 in the insulating spacer portion of the first insulating spacer 1A, and the IC tag 10 with a partial discharge sensor is attached inside the conductive ring 38. The time constant (product of resistivity and dielectric constant) of the conductor of the conductive ring 38 is sufficiently larger than the reciprocal of the frequency of the antenna that detects partial discharge.

  Next, the operation of the sixth insulating spacer 1F will be described.

  When partial discharge occurs inside the gas insulated switch (GIS) to which the sixth insulating spacer 1F is applied, electromagnetic waves resulting from the partial discharge are dissipated to the surroundings. This electromagnetic wave travels in the ground metal container 4 made of GIS metal, passes through the sixth insulating spacer 1F, and the electromagnetic wave caused by the partial discharge leaks outside the GIS. The electromagnetic wave leaking from the GIS is detected by the IC tag 10 with the partial discharge sensor attached to the outside of the sixth insulating spacer 1F.

  Since the conductive ring 38 is made of a conductive material having a time constant sufficiently larger than the reciprocal of the frequency of the antenna that detects the partial discharge, electromagnetic waves leaking from the GIS can pass through the conductive ring 38. . Therefore, the IC tag 10 with a partial discharge sensor attached to the outside of the sixth insulating spacer 1F so as to be covered with the conductive ring 38 can detect electromagnetic waves leaking from the GIS. After detecting the leakage of the electromagnetic wave due to the partial discharge, it is the same as the case where the first insulating spacer 1A is applied.

  According to the gas insulating apparatus to which the sixth insulating spacer 1F is applied, the conductive ring 38 has a time constant sufficiently larger than the reciprocal of the frequency of the antenna that detects the partial discharge, that is, the reciprocal of the time constant is commercial AC. Therefore, the presence of the IC tag 10 with the partial discharge sensor does not disturb the electric field due to the commercial alternating current, and the IC tag 10 with the partial discharge sensor itself is a part. It does not cause discharge. The other functions and effects obtained are the same as those of the gas insulating apparatus to which the first insulating spacer 1A is applied.

[Seventh Embodiment]
FIG. 10 is a longitudinal sectional view of an insulating spacer (hereinafter referred to as a seventh insulating spacer) 1G to which the IC tag with sensor according to the seventh embodiment of the present invention is applied, and the seventh insulating spacer 1G is shown. It is explanatory drawing explaining the attachment state of.

  In the longitudinal sectional view shown in FIG. 10, the upper half is a longitudinal section in the direction along the line II-II shown in FIG. 1, and the lower half is a longitudinal sectional view in the direction along the line II.

  The seventh insulating spacer 1G is different from the first insulating spacer 1A in that it is applied to a metal flange type insulating spacer having a metal flange 39 and no conductive ring 38, but the other points are substantially different. There is no difference. Therefore, substantially the same components as those of the first insulating spacer 1A are denoted by the same reference numerals and description thereof is omitted.

  In the seventh insulating spacer 1G, an O-ring 9 is provided in an O-ring mounting groove 8 portion for gas sealing provided in an insulating portion of the seventh insulating spacer 1G in order to be fastened and airtight with the connecting flange 5. Arranged and fastened using the fixture 7. The IC tag 10 with a partial discharge sensor is fixedly attached to a part of the O-ring attachment groove 8 portion. Further, the metal flange 39 is provided with a hole 40 so that an electromagnetic wave (communication signal) 15 for communication between the IC tag 10 with a partial discharge sensor and the IC tag reader / writer 11 can be transmitted.

  Next, the operation of the seventh insulating spacer 1G will be described.

  When partial discharge occurs inside the gas insulated switch (GIS) to which the seventh insulating spacer 1G is applied, electromagnetic waves resulting from the partial discharge are dissipated around. The electromagnetic wave travels through the ground metal container 4 made of GIS metal, passes through the seventh insulating spacer 1G, and forms an O-ring mounting groove 8 for gas seal provided in the insulating portion of the seventh insulating spacer 1G. It passes through the IC tag 10 with a partial discharge sensor attached to the part.

  In the seventh insulating spacer 1G, since the hole 40 is provided in the metal flange 39 between the IC tag reader / writer 11 outside the GIS and the IC tag 10 with the partial discharge sensor, an electromagnetic wave for communication (communication signal) 15 can pass through the hole 40 and communicate with the IC tag reader / writer 11 outside the GIS. In addition, after detecting the leakage of the electromagnetic wave due to the partial discharge, it is the same as the case where the first insulating spacer 1A is applied.

  According to the gas insulating apparatus to which the seventh insulating spacer 1G is applied, since the hole 40 is provided in the metal flange 39, electromagnetic waves for communication can pass through the hole 40 and can communicate with the IC tag reader / writer 11 outside the GIS. . Therefore, it is possible to obtain the same operation and effect as those of the gas insulating device to which the first insulating spacer 1A is applied.

[Eighth Embodiment]
11 and 12 are longitudinal sectional views of an insulating spacer (hereinafter, referred to as an eighth insulating spacer) 1H to which an IC tag with a sensor according to an eighth embodiment of the present invention is applied. It is explanatory drawing explaining the attachment state of the insulating spacer 1H.

  11 and 12, the upper half is a vertical cross-section in the direction along the line II-II shown in FIG. 1, and the lower half is a vertical cross-sectional view in the direction along the line II. It is.

  The eighth insulating spacer 1H is obtained by applying the inventive concept of the fourth insulating spacer 1D to the seventh insulating spacer 1G. Specifically, the hole 40 of the seventh insulating spacer 1G is configured to cover the IC tag 10 with the partial discharge sensor by covering all or part of the hole 40 with the conductive protector 33.

  According to the gas insulating device to which the eighth insulating spacer 1H shown in FIGS. 11 and 12 is applied, the operation and effect thereof are the same as those of the gas insulating device to which the fourth insulating spacer 1D is applied. That is, since the conductive protector 33 is made of a conductive material whose reciprocal of the time constant is sufficiently smaller than the frequency of commercial alternating current, the presence of an IC tag with a sensor disturbs the electric field due to commercial alternating current. In addition, the sensor-attached IC tag 10 itself does not cause partial discharge.

  As described above, according to the insulating spacer to which the IC tag with a sensor according to the present invention is applied, when this is applied to a gas insulating device, the measurer can measure partial discharge while being in contact with the gas insulating device even when the gas insulating device is in operation As a result, there is no possibility that the measurer is electrocuted, and the safety during measurement is improved.

  In addition, since the IC tag with sensor 10 does not have an external power supply line, there is no worry about noise from the power line and the number of parts is small, so it has long-term reliability and malfunctions even after long-term use. The possibility of doing is extremely small. Therefore, by applying the present invention, it is possible to provide a power switch and an operation monitoring device for the device that have improved the monitoring accuracy and reliability of state monitoring as compared with the conventional case.

  In the above description of the embodiment, the case where the IC tag 10 with the discharge sensor is an active type having the battery 22 has been described. However, even if a passive type without the battery 22 is adopted, it is the same as the case of the active type. The following actions and effects can be obtained. In the case of the passive type, the IC tag reader / writer 11 can be charged by periodically transmitting communication electromagnetic waves from the IC tag reader / writer 11 to be received by the IC tag 10 with discharge sensor, so that the IC tag 10 with discharge sensor is continuously driven. Can be made.

  In the above description of the embodiment, the case where the IC tag with sensor is the IC tag 10 with partial discharge sensor has been described, but the partial discharge sensor 18 may be a temperature sensor. When an IC tag with a temperature sensor is applied, the temperature can be measured continuously, so that the measurer can measure the temperature without touching the gas insulation device even during operation of the gas insulation device. As a result, the temperature history of the insulating spacer can be acquired, and the life evaluation of the IC tag applied insulating spacer 1 with sensor and the O-ring 9 in contact with the sensor IC tag applied insulating spacer 1 can be performed.

  Furthermore, in the description of the above-described embodiment, it has been described that the IC tag with sensor 10 communicates with the IC tag reader / writer 11. However, if there is no write request to the memory 19 of the IC tag with sensor 10, the IC tag reader / writer 11 is used. Instead of this, a read-only IC tag reader may be applied.

  Furthermore, the present invention is not limited to the embodiment described in the embodiment of the invention described above, and can be embodied by modifying the constituent elements without departing from the gist thereof in the implementation stage. That is, various inventions may be formed by appropriately combining a plurality of constituent elements disclosed in each embodiment, or some constituent elements may be deleted from all the disclosed constituent elements.

  For example, as shown in FIGS. 13 and 14, the sixth insulating spacer 1F and the eighth insulating spacer 1H are combined, and the insulating spacer with the metal flange 39 and the conductive ring 38 is combined with the IC with the partial discharge sensor. The insulating spacers 1I and 1J to which the tag 10 is applied may be configured. In addition, as shown in FIG. 15, the sixth insulating spacer 1F and the seventh insulating spacer 1G are combined, and the IC tag 10 with a partial discharge sensor is attached to the insulating spacer with the metal flange 39 and with the conductive ring 38. The applied insulating spacer 1K may be configured.

The front view which shows the state which attached the IC tag application insulating spacer with a sensor which concerns on this invention to the gas insulation apparatus. The longitudinal cross-sectional view of the insulating spacer to which the IC tag with a sensor which concerns on the 1st Embodiment of this invention is applied. Explanatory drawing explaining the structure and relationship of an IC tag with a sensor of an IC tag application insulating spacer which concerns on this invention, an IC tag reader / writer, and a high-order apparatus. Explanatory drawing explaining an example of the information structure memorize | stored in the memory of the IC tag with a partial discharge sensor of the IC tag application insulating spacer which concerns on this invention. The longitudinal cross-sectional view of the insulating spacer to which the IC tag with a sensor which concerns on the 2nd Embodiment of this invention is applied. The longitudinal cross-sectional view of the insulating spacer to which the IC tag with a sensor which concerns on the 3rd Embodiment of this invention is applied. The longitudinal cross-sectional view of the insulating spacer to which the IC tag with a sensor which concerns on the 4th Embodiment of this invention is applied. The longitudinal cross-sectional view of the insulating spacer to which the IC tag with a sensor which concerns on the 5th Embodiment of this invention is applied. The longitudinal cross-sectional view of the insulating spacer to which the IC tag with a sensor which concerns on the 6th Embodiment of this invention is applied. The longitudinal cross-sectional view of the insulating spacer to which the IC tag with a sensor which concerns on the 7th Embodiment of this invention is applied. The longitudinal cross-sectional view of the insulating spacer (what closed all the holes of the metal flange with the electroconductive protection body) to which the IC tag with a sensor which concerns on the 8th Embodiment of this invention is applied. The longitudinal cross-sectional view of the insulation spacer (what closed a part of the hole of a metal flange with the electroconductive protection body) to which the IC tag with a sensor which concerns on the 8th Embodiment of this invention is applied. 1 is a longitudinal sectional view of an insulating spacer to which an IC tag with a sensor according to the present invention is applied (a type with a metal flange and an electrostatic ring, in which all holes of the metal flange are closed with a conductive protective body). 1 is a longitudinal sectional view of an insulating spacer to which an IC tag with a sensor according to the present invention is applied (a type with a metal flange and with an electrostatic ring, in which a part of a hole in the metal flange is closed with a conductive protector). The longitudinal cross-sectional view of the insulating spacer (The type with a metal flange and an electrostatic ring which does not block | close the hole of a metal flange with the electroconductive protective body) to which the IC tag with a sensor which concerns on this invention is applied. The front view which shows the attachment state of the conventional common cone-shaped insulation spacer. The longitudinal cross-sectional view of the direction in alignment with the II line of the insulation spacer (with a metal flange and an electrostatic ring) shown by FIG. The block diagram which shows an example of the gas insulation apparatus and the partial discharge detector to which the partial discharge detection method which takes out the signal of a specific frequency is applied. A longitudinal sectional view of a conventional insulating spacer (with a metal flange and no electrostatic ring). The longitudinal cross-sectional view of the conventional insulating spacer (the type with an electrostatic ring without a metal flange). The longitudinal cross-sectional view of the conventional insulating spacer (the type without an electrostatic ring without a metal flange).

Explanation of symbols

1 (1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J) IC tag applicable insulating spacer 2a, 2b with sensor High-voltage conductor 3 Insulating gas 4 Ground metal container 5 Connecting flange 6 Current-carrying member 7 Mounting Tool 8 O-ring mounting groove 9 O-ring 10 IC tag with partial discharge sensor (IC tag with sensor)
11 IC Tag Reader / Writer 12 Host Device 15 Communication Signal 16 Antenna 17 Modulator / Demodulator 18 Partial Discharge Sensor (Sensor)
19 Memory 20 Clock 21 Power Supply Unit 22 Battery 23 Control Unit 26 Antenna 27 Modulation / Demodulation Unit 28 Power Supply Unit 29 Control Unit 31 Insulating Protector 33 Conductive Protector 34 Conductive Layer 38 Conductive Ring (Electrostatic Ring)
39 Metal flange 40 hole

Claims (8)

Insulating spacers used to insulate and support members between containers of electrical equipment such as gas-insulated switchgear and pipeline air power transmission devices,
The insulating spacer is configured by attaching an IC tag with a sensor together with the O-ring to a mounting groove of an O-ring used for airtightness of the container provided in an insulating portion of the insulating spacer. Tag application insulating spacer. Insulating spacers used to insulate and support members between containers of electrical equipment such as gas-insulated switchgear and pipeline air power transmission devices,
The insulating spacer is attached to the outer peripheral end of the insulating portion of the insulating spacer in a state where the IC tag with sensor is covered with an IC tag protector, and the IC tag protector is an electromagnetic wave for communication of the IC tag with sensor. An insulating spacer for use with an IC tag with a sensor, characterized in that it is configured to select a reciprocal of a time constant of the conductive elastomer within a range in which an electric field is not disturbed by an alternating current of commercial frequency . Insulating spacers used to insulate and support members between containers of electrical equipment such as gas-insulated switchgear and pipeline air power transmission devices,
The insulating spacer is formed by providing a hole in an insulating portion of the insulating spacer, and covering the sensor-attached IC tag with a conductive elastomer through which the electromagnetic wave for communication of the sensor-attached IC tag passes. A sensor-equipped IC tag application insulating spacer , characterized in that a reciprocal of the time constant of the conductive elastomer is selected within a range in which an electric field is not disturbed by an alternating current of commercial frequency . Insulating spacers used to insulate and support members between containers of electrical equipment such as gas-insulated switchgear and pipeline air power transmission devices,
Insulating spacer with an IC tag with a sensor, wherein the insulating spacer is configured by attaching an IC tag with a sensor to a hole provided in the insulating spacer for fastening with a connecting flange . Insulating spacers used to insulate and support members between containers of electrical equipment such as gas-insulated switchgear and pipeline air power transmission devices,
The insulating spacer for IC tag application with sensor , wherein the insulating spacer is configured by providing a conductive ring for controlling potential inside the insulating spacer and attaching the IC tag with sensor to the conductive ring . Insulating spacers used to insulate and support members between containers of electrical equipment such as gas-insulated switchgear and pipeline air power transmission devices,
The insulating spacer has an IC tag with a sensor attached to a mounting groove of an O-ring used for airtightness of the container provided in an insulating portion of the insulating spacer, and a hole through which electromagnetic waves are transmitted is provided at a portion to be fastened to a connecting flange. An insulating spacer for IC tag application with sensor, characterized in that a metal flange is attached in the outer peripheral direction . Insulating spacers used to insulate and support members between containers of electrical equipment such as gas-insulated switchgear and pipeline air power transmission devices,
The insulating spacer is provided with a metal flange provided with a hole through which electromagnetic waves are transmitted in a portion to be fastened with a connecting flange in an outer peripheral direction, and a conductive layer is provided between the metal flange and the insulating portion of the insulating spacer. An IC tag applied insulating spacer with a sensor, wherein an IC tag with a sensor is attached between a conductive layer and an insulating portion of the insulating spacer. The insulating spacer according to any one of claims 1 to 7, wherein the IC tag with a sensor is one of an IC tag with a partial discharge sensor and an IC tag with a temperature sensor.

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