JP5676290B2 - Switching device operation abnormality detection device - Google Patents

Description

  The present invention relates to a switching device operation abnormality detection device for detecting an operation abnormality of a switching device that opens and closes a switch via a control device.

  Conventionally, the circuit breaker breaking operation is normal by monitoring the time from the circuit breaker closing command until the circuit breaker closing operation is detected, and the time from the circuit breaker breaking command until the circuit breaker breaking operation is detected. There is a circuit breaker monitoring device for monitoring whether or not the operation has been performed. (See Actual Kaihei 7-27258)

  There is also a switch operation monitoring device that monitors the operation of the switch by monitoring the current flowing through the closing solenoid of the switch. (See JP 4-168382)

Japanese Utility Model Publication No. 7-27258 (FIG. 1 and its description) Japanese Patent Laid-Open No. 4-168382 (FIG. 3 and explanation thereof)

  The opening and closing of the switch is usually performed via a control device such as an auxiliary relay. When an abnormality occurs in the opening / closing operation of a switch, the cause of the abnormality may be in the control device or in the switch, but the conventional monitoring device does not identify the cause of the failure. In order to investigate and identify the location and cause of failure, it is necessary to bring test equipment and tools that consider all the possible causes to the site, and it is necessary to visit a large number of people, requiring a lot of time and labor. It was.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to make it possible to determine whether the cause of abnormality is in a control device or a switch.

The switchgear operation abnormality detection device according to the present invention includes a control device that operates according to an on command and a turn command ,
A coil for opening a switch that is energized by the operation according to the input command of the control device;
A coil for opening the switch that is energized by the operation according to the turn-off command of the control device;
When the closing coil is energized, the main contact is turned on and the first auxiliary contact is operated, and when the opening coil is energized, the main contact is turned off and the second auxiliary contact is turned on. An operating switch, a command information signal of the on command, a signal of start information of the energizing coil, a signal of the operation information of the first auxiliary contact, and a command information of the turn command A signal, an energization start information signal of the opening coil, and an operation information signal of the second auxiliary contact, and an input command issue information signal and the input coil of the input coil Based on the signal of the start information of energization, if the time from the issue of the input command to the start of the energization of the coil for input is out of a predetermined time range , it is determined that the controller is abnormal when the switch is turned on The start information signal of the energizing coil The time from the start of energization of the coil for insertion to the operation of the first auxiliary contact is outside a predetermined time range based on the signal of the operation information of the first auxiliary contact and the signal The switch is determined to be abnormal when the switch is turned on, and an internal abnormality when the control device is turned on and an internal abnormality when the switch is turned on are distinguished and detected, and the turn command The time from the issuing of the turn-off command to the start of energization of the opening coil is outside the predetermined time range based on the signal of the issuing command and the signal of the energization start information of the opening coil. For example, when the switch of the control device is turned off, and based on the opening information signal of the opening coil and the operation information signal of the second auxiliary contact. From the start of energization of the coil to the second auxiliary contact If the time until the operation is out of a predetermined time range, it is determined that the switch is abnormal when the switch is turned off, and an internal abnormality occurs when the control device is turned off and the switch is turned off. An operating state detection device that distinguishes and detects an internal abnormality is provided.

The present invention relates to a control device that operates according to an on command and a turn command , a coil for turning on a switch that is energized by the operation of the control device according to the on command, and an open / close that is energized by the operation of the control device according to the turn command When the opening coil of the container and the closing coil are energized, the main contact is turned on and the first auxiliary contact is operated, and when the opening coil is energized, the main contact is turned off. A switch on which the second auxiliary contact operates, a signal of the on-command instruction information, a signal of the start-up information of the energizing coil, and a signal of the operation information of the first auxiliary contact; Input a command information signal of the turn command, a signal of start information of the energization of the opening coil, and a signal of the operation information of the second auxiliary contact, and a signal of the command information of the on command The energization of the charging coil Wherein the time until the start of the energization of the input for the coil is determined to be abnormal in the switch Nyutoki of the control device if it is out of the range of the predetermined time from the issuance of the entering command based on the signal of the start information, Based on the signal of the energization start information of the coil for insertion and the information signal of the operation of the first auxiliary contact, from the start of energization of the coil for insertion, the first auxiliary contact If the time until the operation is outside the predetermined time range , it is determined that the switch is abnormal when the switch is turned on. An abnormality is distinguished and detected, and the energization of the opening coil from the issuance of the deactivation command is determined based on the signal of the deactivation instruction issue information and the energization start information signal of the opening coil. The time until the start is out of the predetermined time range Then, it is determined that the controller is abnormal when the switch is turned off, and based on the signal of the start information of the energization of the coil for opening and the signal of the information of the operation of the second auxiliary contact, If the time from the start of energization of the coil to the operation of the second auxiliary contact is out of a predetermined time range, it is determined that there is an abnormality when the switch of the switch is off, and the switch of the control device Since it is equipped with an operating state detection device that distinguishes and detects internal abnormalities at the time of switching operation and internal abnormalities at the time of switch-off operation of the switch, it is the same operating state detection device, both in the case of turning on and releasing There is an effect that it is possible to determine whether the abnormality cause is in the control device or the switch.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a connection diagram which shows an example which applied this invention to the switchgear with a closed switchboard built-in. It is a figure which shows Embodiment 1 of this invention, and is operation | movement explanatory drawing which illustrates operation | movement of each part at the time of the switch ON operation in the example of FIG. 1 with a time chart. It is a figure which shows Embodiment 1 of this invention, and is operation | movement explanatory drawing which illustrates the operation | movement of each part at the time of switch-off operation in the example of FIG. 1 with a time chart. It is a figure which shows Embodiment 1 of this invention, and is operation | movement explanatory drawing which illustrates the operation | movement of the operation state detection apparatus at the time of the switch ON operation in the example of FIG. 1 with a flowchart. It is a figure which shows Embodiment 1 of this invention, and is operation | movement explanatory drawing which illustrates the operation | movement of the operation state detection apparatus at the time of the switch-off operation in the example of FIG. 1 with a flowchart. It is a figure which shows Embodiment 1 of this invention, and is a characteristic view which illustrates the operating characteristic at the time of switch ON operation in the example of FIG. It is a figure which shows Embodiment 1 of this invention, and is a characteristic view which illustrates the operating characteristic at the time of switch-off operation in the example of FIG. It is a figure which shows Embodiment 1 of this invention, and is a characteristic view which illustrates the operation | movement characteristic of the auxiliary | assistant lure in the example of FIG. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows Embodiment 1 of this invention, and is a characteristic diagram which illustrates the operating characteristic at the time of switch opening operation | movement when not including the environmental temperature of the surrounding environment of a control apparatus and a switch in the determination element of abnormality detection. It is a figure which shows Embodiment 1 of this invention, and is a conceptual diagram which shows the example of the internal structure of the operation state detection apparatus in the example of FIG. It is a figure which shows Embodiment 1 of this invention, and is a side view which shows schematic structure in the closed switchboard in the example of FIG. It is a figure which shows Embodiment 2 of this invention, and is a connection diagram which shows the example in case there exist multiple closed switchboards. It is a figure which shows Embodiment 3 of this invention, and is a connection diagram which shows the other example when there are multiple closed switchboards. It is a connection diagram which shows the example of the technique born in the process leading to Embodiment 1 of this invention. It is a figure which shows the example of the technique born in the process leading to Embodiment 1 of this invention, and is operation | movement explanatory drawing which illustrates the operation | movement of each part at the time of the switch ON operation in the example of FIG. 14 with a time chart. It is a figure which shows the example of the technique born in the process to Embodiment 1 of this invention, and is operation | movement explanatory drawing which illustrates the operation | movement of each part at the time of the switch-off operation in the example of FIG. 14 with a time chart. It is a figure which shows the example of the technique born in the process leading to Embodiment 1 of this invention, and is operation | movement explanatory drawing which illustrates the operation | movement at the time of the switch ON operation in the example of FIG. 14 with a flowchart. It is a figure which shows the example of the technique born in the process leading to this invention, and is operation | movement explanatory drawing which illustrates the operation | movement at the time of switch-off operation in the example of FIG. 14 with a flowchart. It is a figure which shows the example of the technique born in the process leading to Embodiment 1 of this invention, and is a characteristic view which illustrates the operating characteristic at the time of the switch ON operation in the example of FIG. It is a figure which shows the example of the technique born in the process leading to Embodiment 1 of this invention, and is a characteristic view which illustrates the operating characteristic at the time of a switch-off operation in the example of FIG.

Embodiment 1 FIG.
Embodiment 1 of the present invention will be described below with reference to FIGS.

As illustrated in FIG. 1, which is a connection diagram showing an example in which the present invention is applied to a switchgear with a built-in closed switchboard, an input signal contact SC (the first switch that is turned ON by an input command) is placed in the closed switchboard CL1. Auxiliary relay energized by the ON operation of the switching element (hereinafter abbreviated as auxiliary Ry) CX, the auxiliary relay energized by the ON operation of the turn signal contact ST (fifth opening / closing element) that is turned on by the turn command (Abbreviated as Auxiliary Ry) TX, Auxiliary RyCX is energized Auxiliary Ry contact (second open / close element) CXa is energized by electromagnetic contactor CX1, Auxiliary RyTX is energized When the auxiliary Ry contact (sixth switching element) TXa is turned on, the magnetic contactor TX1 is activated by the ON operation of the TXa, and when the magnetic contactor CX1 is energized, the magnetic contactor contact (third is turned on) closing element) is biased by the ON operation of CX1a coil for turned to inject switch main contact of VS VSMS2 (see FIG. 12) ( Under referred to as "closing coil") CC, the main contacts VSMS2 (Figure electromagnetic contactor TX1 biased by the biased by electromagnetic contactor contacts (closing element of the 7) TX1a the ON operation of the ON switch VS 12 referred to as a coil for opening to open a reference) (hereinafter "open coil") TC, the main contact VSMS2 the switch VS by energizing the closing coil CC by ON operation of the electromagnetic contactor contacts CX1a enters or operates ON and Switch auxiliary contact (fourth switch element) 52a, magnetic contactor contact TX1a switch ON contact when the main contact VSMS2 of the switch VS is turned off by energizing the open coil TC 8) (switching element 8) 52b, temperature sensor CTS that measures the temperature of the ambient environment of the control device CCD and switch VS, and the start of energization of the open coil TC from the issuing of the turn-off command (hereinafter referred to as "energization start") the control device CCD of the switch Setsuji) the time until when the outside of the predetermined time period Operation state detection that determines that the switch VS is abnormal when the switch VS is off if the time from the start of energization of the open coil TC to the operation of the second auxiliary contact 52b is outside a predetermined time A device OSD1 is provided.

In the example shown in FIG. 1, the control device CCD has auxiliary RyCX, TX,
The circuit includes auxiliary Ry contacts CXa and Txa, magnetic contactors CX1 and TX1, magnetic contactor contacts CX1a and TX1a, and input / output signal connection lines.

In the case of FIG. 1, the operation state detection device OSD1 is, as indicated by an arrow, a signal of the on-command issuing information, a signal of the energization start information of the closing coil CC, and the operation of the auxiliary contact 52a. If the time from when the input command is issued until the start of energization of the closing coil CC (hereinafter referred to as “energization start”) is outside a predetermined time, the switch of the control device CCD It is determined that the switch VS is abnormal, and if the time from the start of energization of the closing coil CC to the operation of the first auxiliary contact 52a is outside a predetermined time, it is determined that the switch VS is abnormal when switched on, The switch command issuing information signal, the energization start signal signal of the open coil TC, and the operation information signal of the second auxiliary contact 52b are input, and from the switch command issuing to the open coil If the time until the start of energization of the TC is outside the specified time If it is determined that the control device CCD is abnormal when the switch is cut off, and the time from the start of energization of the open coil TC to the operation of the second auxiliary contact 52b is outside a predetermined time, the switch of the switch VS Judged as abnormal when cut off.
In other words, the operation state detection device OSD1 includes the operation information signal of the first opening / closing element SC, the operation information signal of the third opening / closing element CX1a, and the fourth opening / closing element 52a. From the signal of the operation information, an internal abnormality at the time of switching-on operation of the control device CCD including the second switching element CXa and the third switching element CX1a, and the switch including the fourth switching element 52a An internal abnormality at the time of switching-on operation of the VS is discriminated, and an internal abnormality at the time of switching-on operation of the control device CCD and an internal abnormality at the time of switching-on operation of the switch VS are distinguished and detected. From the signal of the operation information of the fifth opening / closing element ST , the signal of the operation information of the seventh opening / closing element TX1a, and the signal of the operation information of the eighth opening / closing element 52b, the sixth opening / closing element ST An internal abnormality during the switch-off operation of the control device CCD including the element Txa and the seventh switching element TX1a; The switch VS including the eighth switch element 52b is discriminated from the internal abnormality during the switch-off operation of the switch VS, and the internal abnormality during the switch-off operation of the control device CCD and the switch-off operation of the switch VS Detect and distinguish between internal abnormalities.

As illustrated in FIG. 2, which is an operation explanatory diagram illustrating the operation of each part at the time of the switch on operation in the case of FIG.
First, the contact SC is turned ON by an input command, and is given as an input signal input from the outside to the operating state detection device OSD1.
Auxiliary RyCX energization by turning on contact SC turns on contact CXa of auxiliary RyCX and energizes magnetic contactor CX1,
Contact CX1a of magnetic contactor CX1 by energizing magnetic contactor CX1 by turning ON contact CXa of auxiliary RyCX
Turns ON and the closing coil CC is energized.
When the closing coil CC is energized, the main contact VSMS of the switch VS is turned ON,
When the main contact VSMS of the switch VS is turned ON, the auxiliary contact (a contact) 52a of the switch Vs is turned ON.

ON information of contact SC by input command (information of start of input of switch input signal to control device CCD) signal, ON information of contact CX1a of magnetic contactor CX1 (energization of closing coil CC of switch VS Of the start information (output start information of the switch input signal from the control device CCD to the switch VS) and the auxiliary contact (a contact) 52a of the switch Vs when the main contact VSMS of the switch VS is turned ON As clearly shown in FIG. 1, the ON information signal is input to the operating state detection device OSD1, so that the contact SC ON point A (time measurement start point) by the input command and the auxiliary contact of the switch Vs ( a contact) 52a ON time B (time measurement end time) to time elapsed from time A to B, from time point A contact CX1a of magnetic contactor CX1 ON (switch VS input coil CC to switch coil CC) Counting the elapsed time between time points A and C up to time point C when starting energization (starting output of the switch input signal from the control device CCD to the switch VS), or Elapsed time counting between the points C-B, it is performed in the operating state detecting device OSD1.

In the operating state detection device OSD1, each time elapsed is compared with a reference predetermined time for normal operation when the switch of the control device CCD is turned on, and the switch of the switch VS itself including a closing coil / opening coil If the signal elapsed time in the control device CCD deviates from the reference predetermined time for normal operation when the switch of the control device CCD is turned on, the control device CCD is abnormal If the signal elapsed time in the switch VS including the closing coil / opening coil is out of the standard predetermined time of normal operation when the switch is turned on, the switch is opened / closed. It is determined that the device VS is abnormal (abnormal or that there is an abnormal sign), and these determination results are displayed on the display device DPY (see FIG. 1) of the operating state detection device OSD1, and an alarm is notified. Contacts SEC and CEC (see Fig. 1) turn ON. Sent to the remote monitor control device RMC (see FIG. 1), the judgment results in the remote monitor control device RMC is displayed on the display device, is an alarm notification.

Similarly, as illustrated in FIG. 3, which is an operation explanatory diagram illustrating the operation of each part at the time of switching-off operation in the case of FIG.
First, the contact ST is turned ON by the turn command, and is given as a turn signal input from the outside to the operating state detection device OSD1,
With the auxiliary RyTX energized by turning on the contact ST, the contact TXa of the auxiliary RyTX is turned on and the electromagnetic contactor TX1 is energized,
By energizing the magnetic contactor TX1 by turning on the contact TXa of the auxiliary RyTX, the contact TX1a of the magnetic contactor TX1 is turned on and the open coil TC is energized.
Main contacts VSMS switches OFF the switch VS by the urging of the open coil TC,
When the main contact VSMS of the switch VS is turned off, the auxiliary contact (b contact) 52b of the switch Vs is turned on.

Contact ST ON information (switch start signal input start information to the control device CCD) signal by the switch command, magnetic contactor TX1 contact TX1a ON information (switch VS open coil TC energization Signal of start information (information on start of output of switch-off signal from control device CCD to switch VS), and auxiliary contact (b contact) 52b of switch Vs by turning OFF main contact VSMS of switch VS As clearly shown in FIG. 1, the ON information signal is input to the operating state detection device OSD1, so that the contact point ST ON point D (time measurement start point) by the turn-off command and the auxiliary contact point of the switch Vs ( b contact) 52b ON time E (time measurement end time) to time elapsed from time D to E, contact point TX1a contact of electromagnetic contactor TX1 from time point D to open coil TC of switch VS Count the elapsed time between time points D and F up to time point F at the start of energization (start of output of switch-off signal from control device CCD to switch VS), or The operation state detector OSD1 measures the elapsed time between the time points F and E.

In the operating state detection device OSD1, each time elapsed is compared with a reference predetermined time of normal operation when the switch of the control device CCD is turned off, and the switch of the switch VS itself including the closing coil / opening coil If the signal elapsed time in the control device CCD is compared with the reference predetermined time for normal operation when the switch of the control device CCD is off, compared with the reference predetermined time of normal operation when the control device is off (It is judged that there is an abnormality or a sign of abnormality), and the signal elapsed time in the switch VS including the closing coil / opening coil is from the reference predetermined time for normal operation when the switch VS is switched off. If it is off, it is determined that the switch VS is abnormal when the switch is turned off (abnormal or sign of abnormality), and these determination results are obtained from the display device DPY (FIG. 1) of the operating state detection device OSD1. Display), alarm notification, contact SET and CET (see FIG. 1) are turned ON and transmitted to the remote monitoring and control device RMC (see FIG. 1). The remote monitoring and control device RMC also displays the determination results on the display device and gives an alarm notification.

As illustrated in FIG. 4, which is an operation explanatory diagram illustrating the operation of the operation state detection device at the time of switching-in operation in the case of FIG. 1 as a flowchart, the operation state detection device OSD1 includes:
When the switch is turned on, the input signal is input when the contact SC is closed (ON) (step STC1), and the state of the magnetic contactor CX1 (contact CX1a closed (ON) information) is captured (step STC2).
Captures the ON / OFF signal of switch VS (contact 52a closing (ON) information) (step STC3),
2, the time between the A and C in FIG. 2 is measured, and it is determined whether the signal elapsed time in the control device CCD is deviated from the reference predetermined time for normal operation when the switch of the control device CCD is turned on (step STC4). If it is off (YES), it is an abnormality in the control device CCD, the abnormal contact CEC for outputting that the control device CCD itself is abnormal is turned ON (step STC5), and the switch of the control device CCD is turned on. An abnormality at the time of the on-operation is displayed on the display device DPY (see FIG. 1) of the operating state detection device OSD1, an alarm is notified, transmitted to the remote monitoring control device RMC (see FIG. 1), and the remote monitoring control device RMC also displays the display device. Is displayed and an alarm is notified.

In step STC4, as a result of determining whether or not the signal elapsed time in the control device CCD (the operation time of the control device CCD itself) is out of the reference predetermined time for normal operation when the switch of the control device CCD is turned on, it is not out ( NO), it is not an abnormality of the control device CCD itself, the process proceeds to the next step STC6, and the time between the A and B in FIG. 2 is measured, and the operation time of the control device CCD itself and the operation of the switch itself It is determined whether or not the time (the total operation time of the operation time of the control device CCD itself and the operation time of the switch itself) deviates from the reference predetermined time for normal operation when the switch is turned on (step STC6). In the case of (YES), since the determination result in the step STC4 is normal in the control device CCD, it is an abnormality in the switch VS, so the abnormal contact SEC for outputting that the switch VS itself is abnormal is ON ( Step STC7), the switch-on abnormality of the switch VS is displayed on the display device DPY (see FIG. 1) of the operating state detection device OSD1, alarmed, and transmitted to the remote monitoring control device RMC (see FIG. 1) The remote monitoring control device RMC also displays the warning on the display device.

As illustrated in FIG. 5, which is an operation explanatory diagram illustrating the operation of the operation state detection device during the switch-off operation in the case of FIG. 1 as a flowchart, the operation state detection device OSD1 includes:
When the switch is turned off, the switch signal is input by closing (ON) the contact ST (step STT1), and the state of the magnetic contactor TX1 (contact TX1a closed (ON) information) is captured (step STT2).
Takes in the signal of the switching operation of the switch VS (closed (ON) information of the contact 52b) (step STT3),
While measuring the time between said D-F in FIG. 3, it is determined whether the signal elapsed time in control device CCD has deviated from the standard predetermined time of normal operation at the time of switch-off of control device CCD (step STT4), If it is off (YES), it is an abnormality in the control device CCD, the abnormal contact CET for outputting that the control device CCD itself is abnormal is turned ON (step STT5), and the switch of the control device CCD is turned on. The abnormal operation at the time of turning-off is displayed on the display device DPY (see FIG. 1) of the operating state detection device OSD1, alarmed, transmitted to the remote monitoring control device RMC (see FIG. 1), and the remote monitoring control device RMC also displays the display device. Is displayed and an alarm is notified.

In step STT4, as a result of determining whether or not the signal elapsed time in the control device CCD (the operation time of the control device CCD itself) deviates from the reference predetermined time of normal operation when the switch of the control device CCD is turned off, it is not deviated ( NO), it is not an abnormality of the control device CCD itself, the process proceeds to the next step STT6, and the time between the D and E in FIG. 3 is measured, and the operation time of the control device CCD itself and the operation of the switch itself It is determined whether or not the time (the total operation time of the operation time of the control device CCD itself and the operation time of the switch itself) deviates from the reference predetermined time for normal operation when the switch is turned off (step STT6). In the case of (YES), since the determination result in step STT4 is normal in the control device CCD, it is an abnormality in the switch VS. Therefore, an abnormal contact SET for outputting that the switch VS itself is abnormal is provided. ON ( Step STC7), the switch-off abnormality of the switch VS is displayed on the display device DPY (see FIG. 1) of the operating state detection device OSD1, alarmed, and transmitted to the remote monitoring control device RMC (see FIG. 1) The remote monitoring control device RMC also displays the warning on the display device.

The characteristics of the determination in the steps STC4, STC6, STT4, and STT6 in the operating state detection device OSD1 are correlated with the ambient temperature of the control device CCD and the switch VS. Specifically, as illustrated in FIG. 6 and FIG. 7, the control device CCD measured by the temperature sensor CTS and the predetermined time as the reference when the ambient temperature of the switch VS is low, The predetermined time as the reference when the ambient temperature is high is set to be short. In the tests at the time of development by the inventors, the elapsed time A-C, A-B, C-B, D-F, D-E, and F-E in FIGS. Since it has been found that it becomes longer and becomes shorter as the environmental temperature becomes higher, the characteristics of the determination in the steps STC4, STC6, STT4, and STT6 in the operation state detection device OSD1 include the control device CCD and the switch VS. Correlation with the ambient temperature of the surrounding environment.

Also, the control device CCD and switch VS may gradually become abnormal over a long period of time.
In both cases, when the switch is turned on and when the switch is turned off, the reference predetermined time has a time width TW1 as illustrated by shading in FIGS.

Accordingly, the operating state detection device OSD1 is configured such that the operation time of both the control device CCD and the switch VS is a predetermined time (the network) having a time width TW1 at a certain temperature. If it is out of the range of multiplication, it is determined that the abnormality is present.
As shown in FIG. 6 and FIG. 7, an abnormality warning is output indicating that there is an abnormality sign when the time width TW2 is slightly narrower than the time width T1 and outside the predetermined time, and the display If it is displayed on the device DPY and the remote monitoring and control device RMC to notify the abnormality notice, it is more convenient from the viewpoint of maintenance.

  Next, more specific numerical examples will be described with reference to FIGS.

FIG. 8 is a graph showing the relationship between the temperature and time of each of the auxiliary relay and the magnetic contactor and the determination criteria, with the horizontal axis representing temperature and the vertical axis representing time.
If the operating time is within ± 10 ms, that is, within the shaded area in the graph, it is regarded as a normal time. For example, when the temperature is 20 ° C., the operating time is 50 ms ± 10 ms, that is, 40 ms or more. If it is less than 60 ms, it is considered abnormal.

FIG. 6 exemplifying the case of the switching-on operation is a graph showing the relationship between the temperature and time at the control voltage of DC 100 V and the determination criteria, with the horizontal axis indicating temperature and the vertical axis indicating time.
The control device CCD illustrated in FIG. 1 has one auxiliary relay CX and one magnetic contactor CX1, which is a total of two, so that the operating time is within ± 10 ms × double of ± 20 ms, that is, the shaded range in the graph If it is within, it is considered normal time.
As an example, when the control voltage is DC 100 V and the temperature is 20 ° C., it is regarded as normal operation if the operation time is 200 ms ± 20 ms, that is, 180 ms or more and within 220 ms, and abnormal operation is considered if it is less than 180 ms or exceeds 220 ms.

FIG. 7 exemplifying the case of the switch-off operation is a graph showing the relationship between the temperature and time at the control voltage DC 100 V and the determination criteria, with the horizontal axis indicating temperature and the vertical axis indicating time.
In the control device CCD illustrated in FIG. 1, since there are two auxiliary relays TX and one magnetic contactor TX1, the operation time is within ± 10 ms × double = ± 20 ms, that is, shaded in the graph. If it is within the range, it is regarded as normal time.
As an example, when the control voltage is DC 100 V and the temperature is 20 ° C., it is regarded as a normal operation if the operation time is 150 ms ± 20 ms, that is, 130 ms or more and within 170 ms, and if it is less than 130 ms or exceeds 170 ms, it is regarded as an abnormal operation.

Next, the merit when temperature correction is performed will be described.
FIG. 9 is a graph showing the relationship between the temperature and time and the determination criteria when temperature correction is not performed at a control voltage of DC 100 V, with the horizontal axis representing temperature and the vertical axis representing time.
In this case, since temperature correction is not performed, the determination criterion is constant at 200 ms ± 20 ms, that is, 180 ms or more and 220 ms or less regardless of the temperature.
As an example, the switch is used in an environment in the vicinity of 0 ° C., and the control voltage is set to DC 100V. If the operation time is the normal point example P in the graph of FIG. 6, although it is actually a normal time, it is erroneously determined to be abnormal because it is outside the determination reference range in FIG.
Therefore, when used in an environment where the environmental temperature does not change much, the operating state detection device OSD1 having a judgment characteristic that does not perform temperature correction as illustrated in FIG. 9 may be used, but it is used in an environment where the environmental temperature changes greatly. In such a case, it is better to use the operation state detection device OSD1 having the determination characteristic that performs the temperature correction as illustrated in FIGS. 6 and 7 and sets the reference predetermined time correlated with the environmental temperature.

The operating state detection device OSD1 for determining whether or not there is an abnormality when the switch is turned on and determining whether or not there is an abnormality when the switch is turned off has an internal configuration as illustrated in FIG. Information signals are stored in RAM via IO (input / output device) and DI (digital input). Based on the application and setting values stored in ROM, the correction and the above-mentioned determination are performed by the CPU.
The above-described determination result is displayed on the display device DPY, and the determination result is sent to the remote monitoring control device RMC through the IO (input / output device).

  When the power supply voltage of the coils CC and TC varies, the operation time is shortened if the power supply voltage is increased, and the operation time is increased if the power supply voltage is decreased. If the information is given to the operating state detection device OSD1, and if the power supply voltage is increased, the predetermined time is shortened, and if the power supply voltage is decreased, the predetermined time is extended, the function is added to the operating state detection device OSD1, The reliability of the operation of the operation state detection device OSD1 is further improved.

Further, as shown in FIG. 11, the general internal configuration of the closed switchboard CL1 is that a control room CR is disposed on the front side of the board from the main circuit room MCR that movably accommodates the drawer-type switch VS. Since the control device components such as the auxiliary relays CX and TX, the display device DPY, the operation state detection device OSD1 and the like are housed in the control room CR, the panel at a position between the control room CR and the switch VS From the viewpoint of periodic environmental temperature measurement, it is preferable to install the above-mentioned environmental temperature sensor CTS in the inner upper part (position near the control room CR above the switch with a space from the switch).

Embodiment 2. FIG.
As shown in FIG. 12, when a plurality of closed switchboards CL1, CL2,... CLn are provided, the operation state detection devices OSD1, OSD2,. The aforementioned abnormal state can be grasped for each closed switchboard, and maintenance of each closed switchboard is easy.

Embodiment 3 FIG.
As shown in FIG. 13, when a plurality of closed switchboards CL1, CL2,... CLn are provided, a common operation state detection device OSDC is provided for each closed switchboard CL1, CL2,. If the above-mentioned abnormal state is displayed on the display device for each closed switchboard in the common operating state detection device OSDC, the number of the operation state detection devices OSDC is reduced, and the above-mentioned abnormal state is reduced for each closed switchboard. Abnormal conditions can be grasped, and maintenance of each closed switchboard is easy.

Examples of technologies born in the process leading to the first embodiment are illustrated in FIGS.
In this case, as illustrated in FIG. 14, the information on the start of energization of the making coil CC and the opening coil TC in FIG. 1 is not given to the operating state detection device OSD1, and the power supply for the making coil CC and the opening coil TC is used. The voltage information is given to the operation state detection device OSD1, and the power supply voltage fluctuation correction is performed so that the determination characteristic of the operation state detection device OSD1 has a correlation with the power supply voltage.
In the case of FIG. 14, the power supply voltage correction described above is performed without providing the operation state detection device OSD1 with the information signal of the start of energization to the closing coil CC and the open coil TC. As shown in FIG. 19, the abnormality detection cannot be performed by distinguishing between the control device CCD and the switch VS as in the first embodiment. However, as illustrated in FIG. However, since the power supply voltage is corrected, it can be determined that the operation is normal.

  1 to 20, the same reference numerals indicate the same or corresponding parts. Accordingly, in the description of FIGS. 12 to 20 described above, the description of the same or corresponding parts as those of FIGS. 1 to 11 is omitted, and only the points that are substantially different from FIGS. 1 to 11 are described.

The features in the above-described invention are as follows.
Feature 1: A control device CCD that operates in response to an input command, a closing coil CC of a switch VS that is energized by the operation of the control device in response to the input command, and a main contact VSMS that is energized when the closing coil CC is energized. The switch VS on which the auxiliary contact 52a operates, and the input command signal information signal, the energization start signal signal of the closing coil CC, and the operation information signal of the auxiliary contact 52a are input, The time from when the input command is issued until the start of energization of the closing coil CC is outside a predetermined time (in other words, as shown in paragraphs 0028 and 0029 and other examples, one auxiliary relay CX and one magnetic contactor CX1 are 1). When the control voltage is DC 100 V and the temperature is 20 ° C., (50 ms ± 10 ms) × 2 = 100 ms ± 20 ms = 80 ms to 120 ms, outside 80 ms to 120 ms, that is, less than 80 ms or more than 120 ms ) Is determined to be abnormal when the switch of the control device CCD is turned on, and the time from the start of energization of the closing coil CC to the operation of the auxiliary contact 52a is outside a predetermined time (for example, at an ambient temperature of 20 ° C., As illustrated in FIG. 19, when the voltage is 100 V, the operation state detection device OSD1 that determines that the switch VS is abnormal when the switch is turned on is outside 150 ms ± 50 ms, that is, less than 100 ms or more than 200 ms. An opening / closing device operation abnormality detection device provided.
Feature 2: Control device CCD that operates in response to a turn command, open coil TC of switch VS that is energized by the operation of the control device CCD according to the turn command, main contact VSMS is turned off when this open coil TC is energized The switch VS in which the auxiliary contact 52b is operated, and the command information signal of the turn-off command, the energization start information signal of the open coil TC, and the operation information signal of the auxiliary contact 52b are input. if example the time of energization until the start of the predetermined time out (examples of the open coil TC from issuance of the switching command, paragraphs 0028,0030, like other exemplary, one auxiliary relay TX is, electromagnetic contactor TX1 is When one unit has a control voltage of DC 100 V and a temperature of 20 ° C., (50 ms ± 10 ms) × 2 = 100 ms ± 20 ms = 80 ms to 120 ms, outside 80 ms to 120 ms, that is, less than 80 ms or more than 120 ms If it is determined that the control device CCD is in an abnormal state when the switch is turned off, the time from the start of energization of the open coil TC to the operation of the auxiliary contact 52b is outside a predetermined time (for example, at an ambient temperature of 20 ° C.). As shown in FIG. 20, when the voltage is 100 V, the operating state detecting device OSD1 determines that the switch VS is abnormal when the switch is off if it is outside 100 ms ± 50 ms, that is, less than 50 ms or more than 150 ms. It is a switchgear operation abnormality detection device provided with.
Characteristic point 3: Control device CCD that operates according to on / off command, switch coil VS of switch VS that is energized by operation according to the on / off command of this control device, energization by operation according to the off command of the control device When the open coil TC of the switch VS and the closing coil CC are energized, the main contact VSMS is turned on and the first auxiliary contact 52a is operated. When the open coil TC is energized, the main contact VSMS is turned off. A switch VS that operates and the second auxiliary contact 52b operates, a signal of the on-command command information, a signal of the start-up information of the energizing coil CC, and a signal of the information on the operation of the auxiliary contact 52a And the time from when the input command is issued until the start of energization of the closing coil CC is outside a predetermined time (in other words, as shown in paragraphs 0028 and 0029 and other examples, one auxiliary relay CX, electromagnetic One contactor CX1 and control voltage D When C100V and temperature is 20 ° C., (50 ms ± 10 ms) × 2 = 100 ms ± 20 ms = 80 ms to 120 ms, 80 ms to 120 ms outside, that is, less than 80 ms or more than 120 ms) It is determined that there is an abnormality at the time of charging, and the time from the start of energization of the closing coil CC to the operation of the first auxiliary contact 52a is outside a predetermined time (for example, at an ambient temperature of 20 ° C., as illustrated in FIG. When the voltage is 100 V, if it is outside 150 ms ± 50 ms, that is, less than 100 ms or more than 200 ms), it is determined that the switch VS is abnormal when the switch is turned on, and the signal of the turn-off command information and the open coil The TC energization start information signal and the operation information signal of the second auxiliary contact 52b are input, and the energization opening of the open coil TC is started from the issuing of the turn-off command. The time until the start is outside a predetermined time (in other cases, as in the case of paragraphs 0028 and 0030, as well as other examples, one auxiliary relay TX, one magnetic contactor TX1, one control voltage DC100V, temperature is 20 ° C. , (50 ms ± 10 ms) × 2 = 100 ms ± 20 ms = 80 ms to 120 ms, 80 ms to outside 120 ms, that is, less than 80 ms or over 120 ms) The time from the start of energization of the open coil TC to the operation of the second auxiliary contact 52b is outside a predetermined time (for example, when the ambient temperature is 20 ° C. and the voltage is 100 V as illustrated in FIG. 20, 100 ms ± If it is out of 50 ms, that is, less than 50 ms or more than 150 ms), the switch VS is provided with an operation state detection device OSD1 for determining that the switch VS is abnormal when the switch is off. It is a device.
Feature point 4: In any one of feature points 1 to 3, the ambient temperature of the control device CCD and the switch VS is measured, and a signal of ambient temperature information is given to the operating state detection device OSD1. A temperature sensor CTS, and the operating state detection device OSD1 has the ambient temperature that is lower than the predetermined time when the ambient temperature is lower than a predetermined temperature (for example, paragraphs 0028 and 0029 and 20 ° C. as an example). An opening / closing device operation abnormality detection device characterized by shortening the predetermined time when it is high.
Feature point 5: In any one of the feature points 1 to 4, the time period TW1 is given to the predetermined time determined as the abnormality, and the abnormality is determined when the time period is outside the time width TW1. It is an opening / closing device operation abnormality detection device.
Feature point 6: In any one of the feature points 1 to 5, information on the power supply voltage of the coil is given to the operation state detection device OSD1, and the operation state detection device OSD1 determines that the power supply voltage is increased. An opening / closing device operation abnormality detecting device characterized in that the predetermined time is shortened and the predetermined time is lengthened when the power supply voltage is lower than a predetermined voltage (for example, DC 100V in paragraph 0029 and others).
Feature point 7: The switch device according to any one of feature points 1 to 6, wherein the control device CCD, the switch VS, and the operation state detection device OSD1 are incorporated in a closed switchboard CL1. It is an operation abnormality detection device.
Feature point 8: In any one of the feature point 1 to the feature point 7, the operation state detection device OSD1 is an opening / closing device operation abnormality detection device which outputs an alarm output to the outside at the time of the abnormality.
Feature point 9: a first switching element SC that operates according to an input command, a second switching element CXa that operates according to the operation of the first switching element, a switch VS that operates according to the operation of the second switching element A third switching element CX1a for energizing the closing coil CC, a fourth switching element 52a that operates when the main contact VSMS of the switch VS is switched on by energizing the closing coil CC, and the first switching element From the operation information signal of the SC, the operation information signal of the third opening / closing element CX1a, and the operation information signal of the fourth opening / closing element 52a, the second opening / closing element CXa and the The control device CCD including the third switching element CX1a is discriminated between an internal abnormality when the switch is turned on and an internal abnormality when the switch VS including the fourth switching element 52a is turned on. Internal abnormality when the device CCD is switched on and internal when the switch VS is switched on A switchgear operation abnormality detection apparatus having an operating state detecting device OSD1 for detecting and distinguishing between normal.
Feature 10: Fifth opening / closing element ST that operates according to a cut command, sixth opening / closing element TXa that operates according to the operation of the fifth opening / closing element ST , and switch that operates according to the operation of the sixth opening / closing element A seventh switching element TX1a for energizing the open coil TC of the VS; an eighth switching element 52b that operates when the main contact VSMS of the switch VS is turned off by energizing the open coil TC; and the fifth open / close element From the operation information signal of the element ST, the operation information signal of the seventh opening / closing element TX1a, and the operation information signal of the eighth opening / closing element 52b, the sixth opening / closing element Txa and Determining the internal abnormality during the switch-off operation of the control device CCD including the seventh switching element TX1a and the internal abnormality during the switch-off operation of the switch VS including the eighth switching element 52b; Internal abnormality during switch-off operation of control device CCD and inside of switch-off operation of switch VS It is an opening / closing device operation abnormality detection device provided with an operation state detection device OSD1 that distinguishes and detects a part abnormality.
Feature 11: first switching element SC that operates in response to an input command, second switching element CXa that operates according to the operation of the first switching element, and switch VS that operates according to the operation of the second switching element A third switching element CX1a for energizing the closing coil CC, a fourth switching element 52a that operates when the main contact VSMS of the switch VS is turned on by energizing the closing coil, and a fifth switching element 52a that operates according to a turn command. closure element ST, sixth closure element TXa operated by the operation of the fifth closure element ST, seventh closing of energizing the opening coil TC of the sixth operation to switch VS by the operation of opening and closing elements The element TX1a, the eighth switching element 52b that operates when the main contact VSMS of the switch VS is turned off by energization of the opening coil, and the signal of the operation information of the first switching element SC and the third Signal of the operation of the open / close element CX1a and the fourth An internal abnormality of the control device CCD including the second opening / closing element CXa and the third opening / closing element CX1a, and the fourth opening / closing element. 52a including the internal abnormality at the time of switching-on operation of the switch VS, and distinguishing between the internal abnormality at the time of switching-on operation of the control device CCD and the internal abnormality at the time of switching-on operation of the switch VS And detecting the operation information signal of the fifth opening / closing element ST , the operation information signal of the seventh opening / closing element TX1a, and the operation information signal of the eighth opening / closing element 52b. When the switch-off operation of the control device CCD including the sixth switch element Txa and the seventh switch element TX1a is abnormal, the switch VS including the eighth switch element 52b is switched off. The internal abnormality is determined when the control device CCD is switched off and the switch VS is opened. It is a switchgear operation abnormality detection device provided with an operation state detection device OSD1 that distinguishes and detects an internal abnormality at the time of closing operation.

CC input coil,
CCD controller,
CL1 closed switchboard,
CTS temperature sensor,
CXa second opening and closing element,
CX1a third opening and closing element,
OSD1 operating state detection device,
SC first opening and closing element,
ST fifth open / close element,
TC open coil,
TW1 time span,
Txa sixth opening and closing element,
TX1a 7th opening and closing element,
VS switch,
VSMS main contact,
52a Auxiliary contact (fourth switching element),
52b Auxiliary contact (eighth switching element).

Claims (9)

A control device that operates in response to an on / off command ,
A coil for opening a switch that is energized by the operation according to the input command of the control device;
A coil for opening the switch that is energized by the operation according to the turn-off command of the control device;
When the closing coil is energized, the main contact is turned on and the first auxiliary contact is operated, and when the opening coil is energized, the main contact is turned off and the second auxiliary contact is turned on. An operating switch, a command information signal of the on command, a signal of start information of the energizing coil, a signal of the operation information of the first auxiliary contact, and a command information of the turn command A signal, an energization start information signal of the opening coil, and an operation information signal of the second auxiliary contact, and an input command issue information signal and the input coil of the input coil Based on the signal of the start information of energization, if the time from the issue of the input command to the start of the energization of the coil for input is out of a predetermined time range, it is determined that the controller is abnormal when the switch is turned on The start information signal of the energizing coil The time from the start of energization of the coil for insertion to the operation of the first auxiliary contact is outside a predetermined time range based on the signal of the operation information of the first auxiliary contact and the signal The switch is determined to be abnormal when the switch is turned on, and an internal abnormality when the control device is turned on and an internal abnormality when the switch is turned on are distinguished and detected, and the turn command The time from the issuing of the turn-off command to the start of energization of the opening coil is outside the predetermined time range based on the signal of the issuing command and the signal of the energization start information of the opening coil. For example, when the switch of the control device is turned off, and based on the opening information signal of the opening coil and the operation information signal of the second auxiliary contact. From the start of energization of the coil to the second auxiliary contact If the time until the operation is out of a predetermined time range, it is determined that the switch is abnormal when the switch is turned off, and an internal abnormality occurs when the control device is turned off and the switch is turned off. Opening / closing device operation abnormality detection device provided with an operation state detection device that distinguishes and detects an internal abnormality . In the switchgear operation abnormality detection device according to claim 1,
A temperature sensor for measuring the ambient temperature of the control device and the switch and providing a signal of ambient temperature information to the operating state detection device;
The switch operating abnormality detection device, wherein the operation state detection device shortens the predetermined time when the ambient environment temperature is higher than the predetermined time when the ambient environment temperature is lower than a predetermined temperature . In the switchgear operation abnormality detection device according to claim 1 or 2,
An opening / closing device operation abnormality detection device characterized in that a time width is given to the predetermined time determined as the abnormality, and the abnormality is determined when the time is out of the time range . In the switchgear operation abnormality detection device according to any one of claims 1 to 3,
Information on the power supply voltage of the coil is provided to the operation state detection device, and the operation state detection device shortens the predetermined time when the power supply voltage rises above a predetermined voltage, and the predetermined time when the power supply voltage decreases. An opening / closing device operation abnormality detection device characterized by lengthening the length . In the switchgear operation abnormality detection device according to any one of claims 1 to 4,
The switching device operation abnormality detecting device, wherein the control device, the switch, and the operation state detecting device are built in a closed switchboard . In the switchgear operation abnormality detection device according to any one of claims 1 to 4 ,
The switchgear operation abnormality detection device, wherein the control device, the switch, and the operation state detection device are incorporated in each of a plurality of closed switchboards . In the switchgear operation abnormality detection device according to any one of claims 1 to 6,
The operation state detection device outputs an alarm output to the outside in the case of the abnormality, and is a switch operation abnormality detection device. A first opening / closing element that operates in response to an input command;
A second opening / closing element that operates in accordance with the operation of the first opening / closing element;
A third switching element that operates by the operation of the second switching element and energizes a coil for closing the switch;
A fourth switching element that operates when the main contact of the switch is turned on by energizing the coil for charging;
A fifth opening / closing element that operates in response to a turn-off command;
A sixth opening / closing element that operates in accordance with the operation of the fifth opening / closing element;
A seventh switching element that operates by the operation of the sixth switching element and energizes a coil for opening the switch;
An eighth switching element that operates when the main contact of the switch is turned off by energization of the opening coil; and
From the signal of the operation information of the first switching element, the signal of the operation information of the third switching element, and the signal of the operation information of the fourth switching element, the second switching element And determining an internal abnormality at the time of switch opening operation of the control device including the third switching element and an internal abnormality at the time of switch opening operation of the switch including the fourth switching element, While distinguishing and detecting an internal abnormality at the time of switching-in operation and an internal abnormality at the time of switching-on operation of the switch,
From the signal of the operation information of the fifth switching element, the signal of the operation information of the seventh switching element, and the signal of the operation information of the eighth switching element, the sixth switching element And an internal abnormality during the switch-off operation of the control device including the seventh switching element and an internal abnormality during the switch-off operation of the switch including the eighth switching element, An operation state detection device for distinguishing and detecting an internal abnormality during switch-off operation and an internal abnormality during switch-off operation of the switch
An opening / closing device operation abnormality detection device comprising: A fifth opening / closing element that operates in response to a turn-off command;
A sixth opening / closing element that operates in accordance with the operation of the fifth opening / closing element;
A seventh switching element that operates by the operation of the sixth switching element and energizes a coil for opening the switch;
An eighth switching element that operates when the main contact of the switch is turned off by energization of the opening coil; and
From the signal of the operation information of the fifth switching element, the signal of the operation information of the seventh switching element, and the signal of the operation information of the eighth switching element, the sixth switching element And an internal abnormality during the switch-off operation of the control device including the seventh switching element and an internal abnormality during the switch-off operation of the switch including the eighth switching element, A switching device operation abnormality detection device comprising an operation state detection device that distinguishes and detects an internal abnormality during a switch-off operation and an internal abnormality during a switch-off operation of the switch.

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