JP5602278B1 - Pillar failure detection area warning system - Google Patents

Abstract

An object of the present invention is to promptly notify a person who really needs a heating failure in a pole transformer.
Voltage relays V1, V2, V3, and V4 are provided, and based on the operating states of these voltage relays V1, V2, V3, and V4, one pole transformer 110A and the other pole transformer 110B The presence / absence of an abnormality is determined, and the determination result of the failure transmitter 120 is received by the failure receiver 130 provided in the vicinity of the failure transmitter 120. One pole transformer 110A and the other pole transformer A pole failure detection area alarm system 100 for notifying occurrence of an abnormality in at least one of 110B is configured.
[Selection] Figure 2

Description

  The present invention relates to a pole failure detection area alarm system for detecting a failure of a pole transformer installed on a utility pole.

  Conventionally, there have been various techniques for detecting and notifying a malfunction such as a power failure or leakage in a power distribution path. Specifically, conventionally, for example, a current limiting element that suppresses the current flowing between one end of the secondary side of the transformer and the ground to less than the operation set value of the ground fault current relay, the primary side of the transformer, and the secondary side An earth leakage prevention device configured by connecting in parallel a voltage limiting element that suppresses the voltage on the secondary side of the transformer below a predetermined voltage when in contact with the secondary side is connected to one end of the secondary side of the transformer and the ground. There is a technique for providing an alarm when the current flowing through the leakage prevention device exceeds a predetermined value and notifying that leakage has occurred (for example, see Patent Document 1 below). .

  As a related technique, for example, in a conventional multi-grounding type low-voltage AC distribution line having a plurality of banks, a ground fault current flowing in a parallel connection point between adjacent banks of the common ground line is detected by a current transformer. By measuring the phase of each current based on the reference time signal, determining the direction of the ground fault current flowing in the parallel connection location, and identifying the ground fault occurrence bank, the low voltage AC distribution line in which the ground fault has occurred There has been a technique for specifying (see, for example, Patent Document 2 below).

  In addition, as a related technique, for example, an information providing facility that can communicate with an electric power meter that monitors the energization state of the lead-in line and an indoor monitor that monitors the energization state of the indoor wiring, and has information on a power failure in the distribution system, When power distribution automation equipment is communicable and the power meter and information providing equipment are communicable, and a power outage in the indoor wiring is detected, the power meter There has been a technique for determining the cause and displaying the power failure information including the cause of the determined power failure on an indoor monitor (for example, see Patent Document 3 below).

  As a related technique, for example, when the cause of a power failure is on the indoor side, the first display plate that is supplied with power from the load side of the main breaker is moved to the display position, and the power failure occurs indoors. When the cause of the power failure is on the outdoor side of the distribution board, the second display plate receiving power from the power source side of the main breaker is displayed on the front side of the first display plate. There has been a technique for moving to, and notifying that a power failure has occurred outdoors (see, for example, Patent Document 4 below).

JP 2010-268543 A JP 2009-92417 A JP 2007-6656 A JP 2009-71942 A

  However, the above-described conventional technology has a problem in that it is difficult to detect the occurrence of a failure in a certain section and to detect the failure and limit the cause of the failure. In addition, the above-mentioned conventional technology reports that a failure has occurred to a specific place such as a power company facility, and the cause of the failure is a resident or passerby in the vicinity of the equipment that causes the failure. (Hereinafter referred to as “local residents” etc.).

  Specifically, for example, when a pole transformer fails, a fire may occur from the pole transformer. In such a case, although it is important to promptly notify local residents of the occurrence of a fire, the conventional technology described above can prevent fires in pole transformers such as local residents who need to evacuate. There was a problem that it was difficult to quickly convey the outbreak to those who really needed it.

  Moreover, the conventional technique mentioned above has detected the failure of the said electric equipment by arrange | positioning the apparatus for exclusive use which detects the failure of the said electric equipment in the vicinity of the electric equipment made into object. A dedicated device used for failure detection is a device that is not directly required for power distribution, and there is a problem that it is difficult to attach such a device to a utility pole with a limited installation location. In addition, the above-described conventional technology has to consider the strength of the power pole in order to attach a device that is not directly required for power distribution to the power pole. If the strength of the power pole is insufficient, the strength is secured. There was a problem that it was annoying to replace the pole.

  In addition, the conventional techniques described in Patent Documents 1 to 3 described above have a problem that the system is large and the burden on maintenance is large. For example, the conventional technique described in Patent Document 3 described above is a configuration in which a joint ground line with a local fault bank of a pole transformer is measured to determine and determine the direction, so that a measurement system or communication There was a problem that the line facilities were enormous and not practical.

  In addition, the conventional technique described in Patent Document 4 described above is for determining whether the cause of the power failure is indoor or outdoor and displaying it, and it is not possible to specify the failure or leakage of the pole transformer, There was a problem that only some information could be provided. In addition, although it is possible to provide detailed information to local residents, etc. by providing power outage information based on the information of the distribution automation system, it is not possible to detect faults or leakage of pole transformers, There was a problem that local residents could not be provided with information on pole transformer breakdowns and electrical leakage.

  In order to eliminate the above-described problems caused by the prior art, an object of the present invention is to provide a pole failure detection area warning system that can quickly notify the occurrence of a fault in a pole transformer to a truly necessary person. And

  In addition, the present invention solves the problems caused by the prior art described above, and a simple system can quickly notify the occurrence of a fault in the pole transformer to a person who really needs it. The purpose is to provide a system.

In order to solve the above-described problems and achieve the object, a pole failure detection area alarm system according to the present invention is provided between a first phase and a neutral point in a secondary coil included in the first pole transformer. Between the first voltage relay that operates when the voltage value falls below a set value according to the voltage value, and the second phase and the neutral point in the secondary coil provided in the first pole transformer Between the first phase and the neutral point of the second voltage relay that operates when the voltage value becomes equal to or lower than the set value according to the voltage value of the secondary coil included in the second pole transformer A third voltage relay that operates when the voltage value falls below a set value according to a voltage value of the second phase and a neutral point of a secondary coil provided in the second pole transformer a fourth voltage relay which operates when the voltage the voltage values in accordance with a value between falls below a set value, Serial first voltage relay, the second voltage relay, connected to said third voltage relay and said fourth voltage relay, on the basis of the operating state of the voltage relay, the first pole transformer and a determining section for determining the presence or absence of heating and abnormality in said second pole transformer, provided in the vicinity of the determination portion, the first pole transformer and in response to a determination result of the determination section And a notifying unit for notifying heating and occurrence of abnormality in at least one of the second pole transformers .

Further, in the above-described invention, the pole fault detection area alarm system according to the present invention is configured such that, when the determination unit operates at least one voltage relay and at least one voltage relay does not operate , It is determined that an abnormality has occurred in at least one of the first pole transformer and the second pole transformer .

Further, in the above-described invention, the pole failure detection area alarm system according to the present invention is configured such that the determination unit operates the first voltage relay and the second voltage relay, the third voltage relay and the When the fourth voltage relay is not operating, it is determined that an abnormality has occurred in the first pole transformer .

Further, in the above-described invention, the pole failure detection area alarm system according to the present invention is such that the determination unit does not operate the first voltage relay and the second voltage relay, and the third voltage relay and When the fourth voltage relay operates, it is determined that an abnormality has occurred in the second pole transformer .

Moreover, the pole failure detection area alarm system according to the present invention is the above-described invention, wherein in the above invention, when only the first voltage relay or the second voltage relay is operated , It is determined that an abnormality has occurred in the transformer .

Further, the pole failure detection area alarm system according to the present invention is the above-described invention, in which, in the above invention, when only the third voltage relay or the fourth voltage relay operates , It is determined that an abnormality has occurred in the transformer .

Moreover, the pole failure detection area alarm system according to the present invention is based on the above invention, wherein the determination unit includes the first voltage relay, the second voltage relay, the third voltage relay, and the fourth voltage relay. When the voltage relay is operated, it is determined that a power failure is within a predetermined range from the installation positions of the first pole transformer and the second pole transformer, and the notification unit is at least the first pole It is informed that a power outage is within a predetermined range including an installation position of the upper transformer and the second pole transformer .

  According to the pole failure detection area alarm system according to the present invention, it is possible to promptly notify a person who really needs it to the occurrence of a fault in the pole transformer.

  Further, according to the pole failure detection area alarm system according to the present invention, it is possible to promptly notify a person who really needs it to the occurrence of a failure in the pole transformer with a simple configuration.

It is explanatory drawing which shows schematic structure of the pole top fault detection area alarm system of embodiment concerning this invention. It is explanatory drawing which shows roughly the hardware constitutions of the pole top fault detection area alarm system of embodiment concerning this invention. It is explanatory drawing which shows an example of the display screen of a failure receiver. It is explanatory drawing which shows an example of a failure determination condition table. It is explanatory drawing which shows the sequence of the failure detection in the pole top failure detection area alarm system of embodiment concerning this invention. It is explanatory drawing which shows the principle of the heating failure detection in the top failure detection area warning system of embodiment concerning this invention.

  Exemplary embodiments of a column failure detection area warning system according to the present invention will be explained below in detail with reference to the accompanying drawings.

(Schematic configuration of the column failure detection area warning system)
First, a schematic configuration of a pole failure detection area alarm system according to an embodiment of the present invention will be described. FIG. 1 is an explanatory diagram showing a schematic configuration of a pole failure detection area alarm system according to an embodiment of the present invention.

  In FIG. 1, a pole failure detection area alarm system 100 according to an embodiment of the present invention includes two pole transformers 110 (110A and 110B), a fault transmitter 120, and a fault receiver 130. Composed. The two pole transformers 110 (110A, 110B) are connected in parallel. That is, in each of the two pole transformers 110 (110A, 110B), the primary side is connected to the distribution line 101, and the secondary side is connected to an electric load such as a watt-hour meter of a general household. Moreover, the two pole transformers 110 (110A, 110B) are supported by the electric pole 102, for example.

  In this embodiment, of the two pole transformers 110 (110A, 110B), the first transformer can be realized by one pole transformer 110A. Moreover, in this embodiment, a 2nd transformer can be implement | achieved by the other pole transformer 110B among the two pole transformers 110 (110A, 110B).

  The failure transmitter 120 can be provided in the utility pole 102 that supports the pole transformer 110 (110A, 110B), for example. The failure receiver 130 is, for example, the power pole 102 where the pole transformer 110 (110A, 110B) is installed, and can be installed at a position closer to the ground than the failure transmitter 120.

(Hardware configuration of pillar failure detection area alarm system 100)
Next, a hardware configuration of the pole failure detection area alarm system 100 according to the embodiment of the present invention will be described. FIG. 2 is an explanatory diagram schematically showing a hardware configuration of the pole failure detection area alarm system 100 according to the embodiment of the present invention.

  In FIG. 2, the two pole transformers 110 (110A, 110B) are respectively a primary coil 201a provided on the distribution line 101 side (input side) and a secondary coil provided on the load side (output side). And a pair of coils 201 configured by 201b. The primary coils 201a are each connected to the distribution line 101 via the circuit breaker CB1.

  The pair of coils 201 are magnetically coupled (mutual induction). Each of the two pole transformers 110 (110A, 110B) transmits a varying magnetic field generated by passing an alternating current to the primary coil 201a to the secondary coil 201b coupled by mutual inductance. In 201b, it is converted again into a current and output. Thereby, a high voltage (for example, 6600 [V (volt)]) applied to the distribution line can be transformed to a voltage (100 [V] or 200 [V]) used in a home or office. it can.

  Fuses F1, F2, F3, and F4 are provided in the R phase and S phase of the primary coil 201a in each of the pole transformers 110 (110A and 110B). Fuses F5, F6, F7, and F8 are provided in the R phase and the T phase of the secondary coil 201b in each of the pole transformers 110 (110A and 110B), respectively. The secondary coil 201b in each pole transformer 110 (110A, 110B) is grounded at a neutral point.

  In each pole transformer 110 (110A, 110B), voltage relays V1, V2, V3, V4 are provided between the R phase and the N phase of the secondary coil 201b and between the N phase and the T phase, respectively. ing. In this embodiment, the first voltage relay can be realized by the voltage relay V1, and the second voltage relay can be realized by the voltage relay V2. In the present embodiment, the third voltage relay can be realized by the voltage relay V3, and the fourth voltage relay can be realized by the voltage relay V4.

  The voltage relays V1, V2, V3, V4 operate according to the voltage value flowing through the voltage relays V1, V2, V3, V4. Specifically, for example, it operates when the voltage value flowing through the voltage relays V1, V2, V3, V4 drops to 80 [V], and the voltage value flowing through the voltage relays V1, V2, V3, V4 is 85 [V The voltage relays V1, V2, V3, and V4 that return when the above is reached can be used. By setting the voltage relays V1, V2, V3, and V4 to 80 [V], the voltage relays V1, V2, V3, and V4 can be operated at the time of detecting a leakage on the low voltage side.

  The voltage relays V1, V2, V3, and V4 output “0” indicating that they are operating (the circuit is opened) when the voltage relays V1, V2, V3, and V4 operate when the voltage value decreases to 80 [V]. In each pole transformer 110 (110A, 110B), ammeters G1, G2 are respectively provided between the ground line connected to the N phase and the ground. The voltage relays V1, V2, V3, and V4 are restored when the voltage value drops to 80 [V] and then becomes 85 [V] or more, and are restored (ie, the electric circuit is closed), that is, operate. “1” is output indicating that there is no error.

  The voltage relays V1, V2, V3, and V4 output “0” according to the cut fuse among the fuses F1, F2, F3, F4, F5, F6, F7, and F8, respectively. In the pole failure detection area alarm system 100, four voltage relays V1, V2, V3, and V4 are used per system, and the voltage relays V1, V2, V3, and V4 are assembled in a matrix sequence to be described later. Each failure can be detected (see FIGS. 4 and 5).

  The fault transmitter 120 is connected to each voltage relay V1, V2, V3, V4. The failure transmitter 120 is, for example, a microcomputer (not shown) configured by combining a CPU, a memory such as a ROM or a RAM, and a communication interface used for communication with the failure receiver 130. Can be realized.

  The fault transmitter 120 determines whether or not an abnormality has occurred in the one pole transformer 110A and the other pole transformer 110B based on the output values from the voltage relays V1, V2, V3, and V4. Then, the failure transmitter 120 transmits a failure signal corresponding to the determination result based on the voltage values output from the voltage relays V1, V2, V3, and V4 to the failure receiver 130. For example, the failure transmitter 120 sends a failure signal to the failure receiver 130 only when it is determined that an abnormality has occurred in at least one of the one pole transformer 110A and the other pole transformer 110B. You may send it.

  Furthermore, failure transmitter 120 determines whether or not leakage has occurred in one pole transformer 110A and the other pole transformer 110B based on the current values output from ammeters G1 and G2. In this case, for example, when the current value output from the ammeters G1 and G2 is 30 mA or more, the fault transmitter 120 determines that a leakage has occurred. In this case, the failure transmitter 120 transmits a failure signal corresponding to the current value output from the ammeters G1 and G2. For example, the failure transmitter 120 may transmit a failure signal to the failure receiver 130 only when the current value output from at least one of the ammeters G1 and G2 is 30 mA or more.

  The failure receiver 130 receives the failure signal output from the failure transmitter 120. For example, the failure transmitter 120 is connected to the failure receiver 130 in a wired manner, and receives a failure signal through wired communication. Alternatively, the failure transmitter 120 may be, for example, wirelessly connected to the failure receiver 130 and receive a failure signal through wireless communication.

  The failure transmitter 120 has a timekeeping function. For example, when the voltage drops to a predetermined threshold (for example, 80 [V]) or lower due to a power failure or the like, the failure transmitter 120 has elapsed time since the voltage has decreased to a predetermined threshold (for example, 80 [V]) or lower. Time. Moreover, the time measuring function of the failure transmitter 120 is effective when a power failure occurs due to work, for example. The voltage relays V1, V2, V3, V4 and the fault transmitter 120 are accommodated in a single housing (box on a pole, see symbol 202 in FIG. 2). The housing (pole box) 202 of the failure transmitter 120 can be provided in the utility pole 102 that supports the pole transformer 110 (110A, 110B), for example.

  The failure receiver 130 receives the failure signal transmitted from the failure transmitter 120 and notifies the occurrence of an abnormality in each pole transformer 110 (110A, 110B) according to the received failure signal. The failure receiver 130 notifies the occurrence of abnormality in each pole transformer 110 (110A, 110B), for example, by outputting sound based on the failure signal. Moreover, the failure receiver 130 may alert | report the abnormality generation in each pole transformer 110 (110A, 110B) by displaying the message based on a failure signal, for example (refer FIG. 3).

  The failure receiver 130 includes, for example, a microcomputer (not shown) configured by combining a CPU, a memory such as a ROM and a RAM, and a communication interface used for communication between the failure transmitter 120 and a speaker. Or an output device 131 such as a display.

  The failure receiver 130 receives the failure signal transmitted from the failure transmitter 120 via the communication interface, and outputs voice or text information in the output device 131 in accordance with the received failure signal, thereby changing the voltage on each pillar. The occurrence of an abnormality in the device 110 (110A, 110B) is notified. The microcomputer and output device 131 included in the failure receiver 130 are accommodated in a single housing (reception box, see reference numeral 203 in FIG. 2).

  Specifically, the failure receiver 130 can be installed in the utility pole 102 in which each pole transformer 110 (110A, 110B) is installed, for example. Specifically, the failure receiver 130 is, for example, the utility pole 102 in which each pole transformer 110 (110A, 110B) is installed, and is installed at a position closer to the ground than the failure transmitter 120. be able to. Thereby, the notification of the occurrence of abnormality by the voice or character information output from the output device 131 can be reliably transmitted to the residents in the area.

  The failure receiver 130 may include an operation button (not shown) for inputting an instruction signal for notifying the output device 131 of the occurrence of abnormality by outputting voice or text information. In this case, the operation button is preferably provided at a position that can be operated by local residents. Specifically, the operation button can be provided at a position of 1.8 meters from the ground on the utility pole 102, for example.

  The failure receiver 130 (the housing (reception box) 203) is preferably installed in the vicinity of the utility pole 102 where the pole transformer 110 (110A, 110B) to be monitored is installed and the failure transmitter 120. . That is, the failure receiver 130 may be installed not in the electric power company that manages the pole transformer 110 (110A, 110B) but in the area where the pole transformer 110 (110A, 110B) is installed. preferable.

  The area where the pole transformer 110 (110A, 110B) is installed can be, for example, a range where there is a facility for electricity demand transformed by the pole transformer 110 (110A, 110B). Moreover, the area where the pole transformer 110 (110A, 110B) is installed may be, for example, a range in which the pole transformer 110 (110A, 110B) can be visually recognized.

  Alternatively, the area where the pole transformer 110 (110A, 110B) is installed is, for example, an arbitrary range that can be arbitrarily set by an electric power company that manages the pole transformer 110 (110A, 110B). May be. Specifically, for example, “within a radius of 100 meters centering on the utility pole where the target pole transformer is installed”, “including or in contact with the utility pole where the target pole transformer is installed” It can be set like “compartment”.

  For example, when there is a store such as a shopping mall near the utility pole 102 where the pole transformer 110 (110A, 110B) is installed, the fault receiver 130 is installed in the shopping mall. (See FIG. 1). Moreover, the failure receiver 130 is installed in the nearest sales office of the electric pole 102 where the pole transformer to be monitored is installed among the sales offices of the electric power company that manages the pole transformer, for example. Also good.

(Example of display screen of faulty receiver 130)
Next, a display screen example of the failure receiver 130 will be described. FIG. 3 is an explanatory diagram illustrating an example of a display screen of the failure receiver 130. In FIG. 3, the failure receiver 130 includes a regional power failure / failure message board (hereinafter described with reference numeral 131) as the output device 131. In the local power failure / failure message board 131 as the output device 131 provided in the failure receiver 130, a message corresponding to a failure signal expected to be received is described in advance.

  The failure receiver 130 is provided with illumination (not shown) that selectively makes any one of the messages written on the local power failure / failure message panel 131 conspicuous. When receiving the failure signal from the failure transmitter 120, the failure receiver 130 turns on the illumination corresponding to the message corresponding to the failure signal in the local power failure / failure message panel 131. Thereby, any one message can be selectively made conspicuous on the local power failure / failure message panel 131.

  The failure receiver 130 includes a display that appropriately displays a corresponding message as the output device 131 in place of the local power failure / failure message panel 131 in which a message corresponding to a failure signal expected to be received is described in advance. May be. In this case, every time the failure receiver 130 receives a failure signal, the failure receiver 130 generates text data corresponding to the failure signal, and displays characters based on the text data as guidance information on the display.

  The failure receiver 130 detects that an abnormality in the pole transformer is detected in place of or in addition to the local power failure / failure message panel 131 in which a message corresponding to a failure signal expected to be received is described in advance. An abnormality display lamp (not shown) may be provided. When the abnormality display lamp is lit once, for example, it continues to be lit until a predetermined operation is performed. Thus, the patrolperson who notices that the abnormality display lamp is turned on during patrol (patrolling work) or the like is lit until a predetermined operation is performed and the lamp is turned off.

  As a result, for example, even if there are no local residents in the vicinity of the pole transformer where an abnormality has been detected, notifying the failure of the pole transformer, by turning on the anomaly indicator lamp, During patrol by the manager of the pole transformer, it is possible to confirm whether or not an abnormality has occurred in the pole transformer.

(Example of failure judgment condition table)
FIG. 4 is an explanatory diagram illustrating an example of the failure determination condition table. In FIG. 4, the failure determination condition table 400 stores determination criteria for nine failures (1) to (9) that can be detected by the pole failure detection area alarm system 100.

  In the pole failure detection area alarm system 100, based on the storage contents of the failure determination condition table 400, the output values from the voltage relays V1, V2, V3, and V4 and the output values from the ammeters G1 and G2, Is determined as one of the nine failures (1) to (9) shown in FIG. The failure determination condition table 400 can be provided, for example, in a memory that constitutes a microcomputer that implements the failure transmission apparatus.

  The failure (1) indicates that the fuse F1 and the fuse F2 in one of the pole transformers 110A are blown out or the pole transformer 110A is heated or the like. When the fuse F1 and the fuse F2 in one pole transformer 110A are blown or the pole transformer 110A is overheated, the outputs from the voltage relays V1 and V2 become 0 (no voltage), and the voltage relays V3 and V4 The output from is 1 (with voltage).

  If the output from the voltage relays V1 and V2 becomes 0 (no voltage) and the output from the voltage relays V3 and V4 becomes 1 (with voltage), the fault transmitter 120 detects that the fault (1) is detected. Judgment is made and a failure signal indicating that the failure of (1) has been detected is output to the failure receiver 130. In this case, the failure receiver 130 displays, for example, a message such as “A failure of No. 1 Tr. Contact your nearest sales office” on the local power failure / failure message panel 131.

  The failure in (2) indicates that the fuse F3 and the fuse F4 in the other pole transformer 110B are blown out or that the pole transformer 110B is heated. When the fuse F3 and the fuse F4 in the other pole transformer 110B are blown out or the pole transformer 110B is overheated, the outputs from the voltage relays V3, V4 become 0 (no voltage), and the voltage relays V1, V2 The output from is 1 (with voltage).

  When the output from the voltage relays V3 and V4 is 0 (no voltage) and the output from the voltage relays V1 and V2 is 1 (with voltage), the fault transmitter 120 detects that the fault (2) has been detected. A failure signal indicating that the failure (2) has been detected is output to the failure receiver 130. In this case, for example, the failure receiver 130 displays a message such as “It is a failure of No. 2 Tr. Please contact your nearest sales office” on the regional power failure / failure message panel 131.

  The failure in (3) indicates that the fuse F5 in one pole transformer 110A is blown or the pole transformer 110A is heated or the like. When the fuse F5 in one pole transformer 110A is blown out or the pole transformer 110A is overheated, the output from the voltage relay V1 becomes 0 (no voltage), and the outputs from the voltage relays V2, V3, and V4 Becomes 1 (with voltage).

  When the output from the voltage relay V1 is 0 (no voltage) and the output from the voltage relays V2, V3, V4 is 1 (with voltage), the fault transmitter 120 detects that the fault (3) is detected. Judgment is made and a fault signal indicating that the fault (3) has been detected is output to the fault receiver 130. In this case, the failure receiver 130 displays, for example, a message such as “It is a failure of No. 1 Tr. Please contact the nearest sales office” on the local power failure / failure message panel 131.

  The failure (4) indicates that a failure has occurred due to the fuse F6 being blown out of one pole transformer 110A, heating of the pole transformer 110A, or the like. When the fuse F6 in one pole transformer 110A is blown out or the pole transformer 110A is overheated, the output from the voltage relay V2 becomes 0 (no voltage), and the outputs from the voltage relays V1, V3, and V4 Becomes 1 (with voltage).

  When the output from the voltage relay V2 is 0 (no voltage) and the output from the voltage relays V1, V3, and V4 is 1 (with voltage), the fault transmitter 120 detects that the fault (4) is detected. Judgment is made, and a failure signal indicating that the failure of (4) has been detected is output to the failure receiver 130. In this case, in the failure receiver 130, for example, a message such as “It is a failure of the pole No. 1 Tr. Please contact your nearest sales office” is displayed in the same way as the failure of the fuse F5. Display on the panel 131.

  The failure (5) indicates that the fuse F7 in the other pole transformer 110B is blown or the pole transformer 110B is heated or the like. When the fuse F7 in the other pole transformer 110B is blown out or the pole transformer 110B is overheated, the output from the voltage relay V3 becomes 0 (no voltage), and the outputs from the voltage relays V1, V2, and V4 Becomes 1 (with voltage).

  When the output from the voltage relay V3 becomes 0 (no voltage) and the output from the voltage relays V1, V2, and V4 becomes 1 (with voltage), the fault transmitter 120 detects that the fault (5) is detected. The fault signal indicating that the fault (5) is detected is output to the fault receiver 130. In this case, the failure receiver 130 displays, for example, a message such as “It is a failure of No. 2 Tr. Please contact the nearest sales office” on the local power failure / failure message panel 131.

  The failure in (6) indicates that the fuse F8 in the other pole transformer 110B is blown out or that the pole transformer 110B is heated or the like. When the fuse F8 in the other pole transformer 110B is blown out or the pole transformer 110B is overheated, the output from the voltage relay V4 becomes 0 (no voltage), and the outputs from the voltage relays V1, V2, and V3. Becomes 1 (with voltage).

  When the output from the voltage relay V4 is 0 (no voltage) and the output from the voltage relays V1, V2, and V3 is 1 (with voltage), the fault transmitter 120 detects that the fault (6) has been detected. The fault signal indicating that the fault (6) is detected is output to the fault receiver 130. In this case, in the failure receiver 130, for example, a message such as “It is a failure of the pole No. 2 Tr. Please contact the nearest sales office” is displayed in the same way as the failure of the fuse F7. Display on the panel 131.

  The failure (7) indicates that the voltage has dropped below a predetermined threshold (for example, 80 V) due to a power failure or the like. When the voltage drops below a predetermined threshold (for example, 80 V) due to a power failure or the like, all the outputs from the voltage relays V1, V2, V3, and V4 become 0 (no voltage). In the pole fault detection area alarm system 100, the fault transmitter 120 determines that a distribution line fault has occurred when the voltages of all the voltage relays V1, V2, V3, and V4 become 0V.

  That is, when the outputs from the voltage relays V1, V2, V3, and V4 all become 0 (no voltage), the fault transmitter 120 determines that the fault of (7) has been detected, and the fault transmitter 130 A fault signal indicating that the fault (7) has been detected is output. In this case, the failure receiver 130 displays, for example, a message such as “There is a power failure around here. Please wait for a trial charge after XX seconds” on the local power failure / failure message board 131. .

  The trial charge is performed, for example, 30 seconds after a power failure is detected. In the failure receiver 130, the message to be output may be changed according to the remaining time until the trial charging. For example, immediately after a power failure, a message such as “There is a power failure around here. Please wait for a while after 30 seconds will be charged.” Is displayed on the local power failure / failure message panel 131, and 15 seconds have elapsed since the power failure. Displays a message such as “There is a power outage in this area. Please wait for a while since the test will be charged in 15 seconds” on the regional power failure / failure message panel 131.

  The failure of (8) recovers even if the voltage drops below a predetermined threshold (for example, 80V) due to a power failure or the like, and a predetermined time (for example, 30 seconds) elapses after the voltage drops below the predetermined threshold. Indicates that it is not in a state. If the failure transmitter 120 is below a predetermined threshold even after a predetermined time has elapsed after all the outputs from the voltage relays V1, V2, V3, V4 have become 0 (no voltage), the failure of (8) It is determined that the failure has been detected, and a failure signal indicating that the failure (8) has been detected is output to the failure receiver 130. In this case, in the failure receiver 130, for example, a message such as “Test charge is unsuccessful. The power outage will be prolonged, so please check with your local sales office for details.” indicate.

  The predetermined time (giving time) required for determining the failure in (8) is not limited to 30 seconds. The predetermined time (give-up time) required for determining the failure in (8) is set according to, for example, the number of DMs (switches with a timed input function) provided on the distribution line where the pole transformer is installed. can do. Specifically, for example, it may be 30 seconds + DM number × 10 seconds. If the pole transformer does not return after the “30 seconds + number of DMs × 10 seconds” elapses after the voltage drops below a predetermined threshold, the failure transmitter 120 indicates that the failure (8) has been detected. Judgment is made, and a failure signal indicating that the failure (8) has been detected is output to the failure receiver 130.

  The failure (9) indicates that a leakage has occurred. When electric leakage occurs, the output from the ammeters G1 and G2 becomes 1 (with voltage). When the output from the ammeters G1 and G2 becomes 1 (with voltage), the fault transmitter 120 determines that the fault (9) has been detected, and the fault receiver 130 determines that the fault (9) has occurred. A fault signal indicating that it has been detected is output. In this case, the failure receiver 130 displays, for example, a message such as “There is a power leak. Please check with your nearest sales office for danger” on the local power failure / failure message panel 131.

  Note that in the pole failure detection area warning system 100 of this embodiment, it is probabilistic that the failure of two pole transformers at a time (two are simultaneously) is not considered as an accident assumption. .

(Fault detection sequence)
Next, a failure detection sequence in the pole failure detection area alarm system 100 according to the embodiment of the present invention will be described. FIG. 5 is an explanatory diagram showing a failure detection sequence in the pole failure detection area alarm system 100 according to the embodiment of the present invention.

  The failure transmitter 120 determines whether any of the nine failures (1) to (9) shown in FIG. 4 corresponds to the failure according to the sequence shown in FIG. For example, the failure transmitter 120 determines whether or not any of the nine failures (1) to (9) shown in FIG. 4 corresponds to (1) to (9) in the order ( The determination is made sequentially from the left side to the right side in FIG.

  In FIG. 5, “T” indicates a timer. The timer starts timing when all the outputs from the voltage relays V1, V2, V3, and V4 become 0 (no voltage). Specifically, the failure transmitter 120 turns on a predetermined switch when the outputs from the voltage relays V1, V2, V3, and V4 are all 0 (no voltage). The timer measures the elapsed time since a predetermined switch in the faulty transmitter 120 is turned on. The failure transmitter 120 determines the failure in (8) when the failure transmitter 120 does not return after a predetermined time (for example, 30 seconds) has elapsed since a predetermined switch in the failure transmitter 120 is turned on.

(Principle of detection of heating failure)
FIG. 6 is an explanatory diagram showing the principle of heating failure detection in the pole failure detection area alarm system 100 according to the embodiment of the present invention. In FIG. 6, the column failure detection area warning system 100 detects a heating failure by using the temperature characteristic of the magnetic flux by the column transformer. In a permanent magnet, when heat energy is applied by being heated, a small magnet (time moment) constituting the permanent magnet vibrates (thermal fluctuation phenomenon). When the permanent magnet is heated above a certain temperature, the spin disturbance due to thermal fluctuation becomes strong, and the small magnet loses directionality (no spontaneous orientation) and loses magnetism (demagnetizes). The temperature at which the permanent magnet loses magnetism is called the Curie point.

According to the Curie-Weiss law, which is a law for explaining the behavior of the magnetic susceptibility at a temperature above the Curie point, the magnetic susceptibility X, the Curie temperature C specific to the substance, and the absolute temperature of the substance (unit: The relationship between (Kelvin) T and the constant Curie temperature (unit: Kelvin) θp is expressed by the following equation (A).
X = C / T−θp (A)

When the voltage v [V], the number of turns N [winding], the magnetic flux Φ [Wb], and the time t [s] are used, the voltage v is expressed by the following equation. As shown in the following equation (B), a correlation by electromagnetic induction is established between the voltage and the magnetic flux.
v = N (dΦ / dt) (B)

  When the magnetism of the iron core of each coil decreases at the Curie point, the magnetic flux decreases, thereby decreasing the voltage. In the pole fault detection area warning system 100, the voltage before the pole transformer reaches the Curie point is normal by detecting the voltage based on the voltage values in the voltage relays V1, V2, V3, and V4. It can be determined whether or not the temperature is within the operating temperature range. As a result, an abnormal temperature rise (overheating) of the pole transformer can be detected and a disaster such as ignition due to overheating can be detected in advance.

  As described above, since the voltage relays V1, V2, V3, and V4 are highly sensitive settling that operates at 80 [V] or less, when the coil having the characteristics shown in FIG. By detecting the voltage (80 [V]) that accompanies a decrease in magnetic susceptibility according to Curie-Weiss law when an abnormality (fire) occurs in which the coil inside the transformer becomes high heat (eg, 200 ° C. or higher), Abnormalities in pole transformers can be detected.

  As described above, by providing an operation button (not shown) on the failure receiver 130, residents in the area where the utility pole 102 where the pole transformer 110 (110A, 110B) is installed can be used. The presence or absence of abnormality in the pole transformer 110 (110A, 110B) can be confirmed at any time. This can increase the sense of security of the local residents and contribute to the improvement of the image of the power company.

  As described above, when there is a store such as a shopping mall near the utility pole 102 where the pole transformer 110 (110A, 110B) is installed, the failure receiver 130 is installed in the shopping mall, and the shopping mall By notifying the occurrence of an abnormality in the pole transformer 110 (110A, 110B), it is possible to easily convey the occurrence of the abnormality in the pole transformer 110 (110A, 110B) to more local residents. . And, by reporting the occurrence of abnormality of pole transformer 110 (110A, 110B) to many local residents, etc., the probability that the local residents who have received the notification of the occurrence of the abnormality will contact the electric power company is increased. Can do. Thereby, the electric power company can grasp the abnormality occurrence of the pole transformer 110 (110A, 110B) without constructing a large-scale system, and can quickly cope with the abnormality that has occurred.

  As described above, the pole failure detection area alarm system 100 according to the embodiment of the present invention includes the voltage relays V1, V2, V3, and V4, and the operating states of these voltage relays V1, V2, V3, and V4. Based on the above, whether or not an abnormality has occurred in one pole transformer 110A and the other pole transformer 110B is determined. Then, the failure receiver 130 provided in the vicinity of the failure transmitter 120 receives the determination result of the failure transmitter 120, and an abnormality occurs in at least one of the one pole transformer 110A and the other pole transformer 110B. It is characterized in that the occurrence is notified.

  According to the pole failure detection area alarm system 100 according to the embodiment of the present invention, equipment that has a limited installation place such as a power pole 102 without attaching a device that is not directly required for power distribution to the power pole 102. Can be used effectively, and the occurrence of a failure (such as a fire) in the pole transformer 110 (110A, 110B), such as a local resident, can be quickly communicated to a person who really needs it. As a result, information that directly affects the area (fire / power outage) such as failure of the pole transformer 110 (110A, 110B) can be transmitted in close contact with the area.

  In addition, according to the pole failure detection area alarm system 100 of the embodiment according to the present invention, the occurrence of an abnormality is notified by the failure receiver 130 provided in the vicinity of the failure transmitter 120 that determines whether or not an abnormality has occurred. Thus, it is possible to promptly notify a person who really needs it to the occurrence of a failure (such as a fire) in the pole transformer 110 (110A, 110B), such as a local resident, without constructing a large-scale system. Thereby, generation | occurrence | production of failure (fire etc.) in the pole transformer 110 (110A, 110B) can be transmitted, suppressing the burden concerning maintenance management.

  Further, the pole failure detection area alarm system 100 according to the embodiment of the present invention is configured such that when at least one voltage relay V1, V2, V3, or V4 operates, one pole transformer 110A and the other pole transformer. It is characterized in that it is determined that an abnormality has occurred in at least one of the containers 110B.

  According to the pole failure detection area alarm system 100 of the embodiment according to the present invention, it is only necessary to determine whether or not at least one voltage relay V1, V2, V3 or V4 is operated. 110A, 110B) can easily and reliably determine whether or not an abnormality has occurred. As a result, the processing burden on the faulty transmitter 120 can be reduced.

  Further, the pole fault detection area alarm system 100 according to the embodiment of the present invention is configured such that when the voltage relay V1 and the voltage relay V2 are operated and the voltage relay V3 and the voltage relay V4 are not operated, one pole transformation It is characterized by determining that an abnormality has occurred in the device 110A.

  In addition, the pole fault detection area alarm system 100 according to the embodiment of the present invention is configured such that when the voltage relay V1 and the voltage relay V2 do not operate and the voltage relay V3 and the voltage relay V4 operate, the other pole transformer It is characterized in that an abnormality has occurred in 110B.

  Further, the pole failure detection area alarm system 100 according to the embodiment of the present invention determines that an abnormality has occurred in one pole transformer 110A when only the voltage relay V1 or the voltage relay V2 operates. It is characterized by that.

  Moreover, the pole failure detection area alarm system 100 according to the embodiment of the present invention determines that an abnormality has occurred in the other pole transformer 110B when only the voltage relay V3 or the voltage relay V4 operates. It is characterized by that.

  Further, the pole fault detection area alarm system 100 according to the embodiment of the present invention is configured such that when all the voltage relays V1, V2, V3, and V4 are operated, one pole transformer 110A and the other pole transformer 110B. It is characterized in that it is determined that a power failure is within a predetermined range from the installation position.

  Thus, according to the pole failure detection area alarm system 100 of the embodiment according to the present invention, which voltage relay V1, V2, V3 or V4 is operated (the operated voltage relays V1, V2, V2). It is possible to easily and reliably determine whether or not an abnormality has occurred in the pole transformer 110 (110A, 110B) only by determining the V3 and V4 patterns). As a result, the processing load on the failure transmitter 120 can be reduced, and the occurrence of a failure in the pole transformer 110 (110A, 110B) can be quickly transmitted to a truly necessary person by a simple system. .

  As described above, the pole failure detection area alarm system according to the present invention is useful for a pole failure detection area alarm system that detects a failure of an electrical facility such as a transformer installed in a distribution line. It is suitable for a community-based pillar failure detection area warning system that protects facilities distributed in the area while providing power outage information.

100 Pillar Failure Detection Area Alarm System 110 (110A, 110B) Pillar Transformer 120 Failure Transmitter 130 Failure Receiver F1, F2, F3, F4, F5, F6, F7, F8 Fuse G1, G2 Ammeter V1, V2 , V3, V4 Voltage relay

Claims (7)

A first voltage relay that operates when the voltage value falls below a set value according to a voltage value between a first phase and a neutral point in a secondary coil included in the first pole transformer ,
A second voltage relay that operates when the voltage value falls below a set value according to a voltage value between a second phase and a neutral point in a secondary coil provided in the first pole transformer ; ,
A third voltage relay that operates when the voltage value falls below a set value according to the voltage value between the first phase and the neutral point in the secondary coil included in the second pole transformer ,
A fourth voltage relay that operates when the voltage value falls below a set value according to the voltage value between the second phase and the neutral point in the secondary coil included in the second pole transformer ; ,
Connected to the first voltage relay, the second voltage relay, the third voltage relay and the fourth voltage relay, and based on the operating state of each voltage relay, the first pole transformer and A determination unit for determining the presence or absence of heating and occurrence of abnormality in the second pole transformer ;
An informing unit that is provided in the vicinity of the judging unit, and that reports heating and abnormality occurrence in at least one of the first pole transformer and the second pole transformer according to a judgment result of the judging unit; ,
An on-pillar failure detection area warning system characterized by comprising: The determination unit determines that there is an abnormality in at least one of the first pole transformer and the second pole transformer when at least one voltage relay is operating and at least one voltage relay is not operating. The pole failure detection area warning system according to claim 1, wherein it is determined that a fault has occurred. When the first voltage relay and the second voltage relay are operating, and the third voltage relay and the fourth voltage relay are not operating, the determination unit determines that the first pole transformer It is determined that an abnormality has occurred in the column top fault detection area alarm system according to claim 2. In the case where the first voltage relay and the second voltage relay do not operate and the third voltage relay and the fourth voltage relay operate, the determination unit determines that the second voltage transformer is not operated. 3. The pole failure detection area warning system according to claim 2, wherein it is determined that an abnormality has occurred. The determination unit determines that an abnormality has occurred in the first pole transformer when only the first voltage relay or the second voltage relay operates. The on-pillar failure detection area alarm system described in 1. The said determination part determines that the abnormality has generate | occur | produced in the said 2nd pole transformer, when only the said 3rd voltage relay or the said 4th voltage relay operate | moves. The on-pillar failure detection area alarm system described in 1. When the first voltage relay, the second voltage relay, the third voltage relay, and the fourth voltage relay are operated, the determination unit is configured to operate the first pole transformer and the second voltage relay. Judge that the power outage is within the specified range from the installation position of the pole transformer ,
The column according to claim 2, wherein the notification unit notifies that a power failure occurs within a predetermined range including at least installation positions of the first pole transformer and the second pole transformer. Top failure detection area alarm system.

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