WO2007108063A1 - 状態把握装置およびこの状態把握装置を備えた開閉制御装置 - Google Patents
状態把握装置およびこの状態把握装置を備えた開閉制御装置 Download PDFInfo
- Publication number
- WO2007108063A1 WO2007108063A1 PCT/JP2006/305362 JP2006305362W WO2007108063A1 WO 2007108063 A1 WO2007108063 A1 WO 2007108063A1 JP 2006305362 W JP2006305362 W JP 2006305362W WO 2007108063 A1 WO2007108063 A1 WO 2007108063A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- state
- magnetic flux
- waveform
- current
- mover
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
- H01H47/32—Energising current supplied by semiconductor device
Definitions
- the present invention relates to a state grasping device for grasping the state of an operated device, the state of an electromagnetic operating device, or the state of a switching device when a switching device such as a power breaker is operated by an electromagnetic operating device. Is. Furthermore, the present invention relates to an opening / closing control device provided with this state grasping device.
- an indicator is attached to a drive rod connected to a drive coil of an electromagnetic actuator, and the position is detected by an optical detector.
- the amount of movement of the index of the initial position force due to wear of the contact point is detected (see, for example, Patent Document 1).
- Patent Document 1 British Patent Application Publication No. 2350724 (Page 5, lines 15 to 20 and Figure 4)
- the conventional measuring device for measuring the amount of wear of the switching contacts is configured as described above, an optical detector is required and the device becomes large. Also, the force that needs to be optically aimed and capture the index. Therefore, adjustments are necessary to eliminate misalignment. However, the amount of contact consumption is only a few millimeters, so the above adjustment was required to be performed with high accuracy. Furthermore, there are two optical detectors per actuator, and in the case of a three-phase circuit breaker, there is a problem that the detector power is required and the device is expensive.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a state grasping device that is small in size, inexpensive, and highly accurate. It is another object of the present invention to provide an open / close control device including such a state grasping device.
- a state grasping device is capable of moving with respect to a fixed iron core and the fixed iron core.
- An electromagnetic operating device comprising: a movable iron core configured; an electromagnetic coil that is excited by a driving power supply to move the movable iron core; and a permanent magnet installed on an outer periphery of the movable iron core.
- current measuring means for measuring the current flowing in the electromagnetic coil
- magnetic flux measuring means for measuring the magnetic flux inside the fixed iron core
- output signal from the current measuring means Calculating a current change waveform representing a temporal change and a magnetic flux change waveform representing a temporal change of an output signal from the magnetic flux measuring means to create a calculated waveform; and obtaining a feature point of the calculated waveform;
- a state determining means for determining the state of the electromagnetic operating device based on the information on the feature points.
- the opening / closing control device determines the degree of failure based on the state of the electromagnetic operating device obtained by the state grasping device according to any one of claims 1 to 6, and In addition to displaying according to the degree of failure, it controls the opening and closing operation when a serious failure occurs.
- the drive characteristics of the movable iron core can be known, and the state of the electromagnetic operating device can be determined in a small, inexpensive and accurate manner.
- a state grasping device that can grasp the state of the operated device operated by the electromagnetic operation device or the state of the switchgear can be obtained.
- the failure display according to the degree of failure is performed using the state grasping device as described above, the work of checking the state of the device by periodic maintenance can be omitted. The cost for maintenance work can be reduced. In addition, because it controls the opening and closing operation when a serious failure occurs, it has the effect of preventing accidents due to malfunction of the operated equipment.
- FIG. 1 is a schematic configuration diagram (opened state) showing a power switch using an electromagnetic operation mechanism according to Embodiment 1 of the present invention.
- FIG. 2 is a schematic configuration diagram (closed state) showing a power switch using the electromagnetic operating mechanism according to the first embodiment of the present invention.
- ⁇ 3] A schematic configuration diagram showing an electromagnetic operating mechanism and a state grasping device according to Embodiment 1 of the present invention.
- FIG. 4 is a flowchart for explaining operations of the state grasping device and the opening / closing control device according to the first embodiment of the present invention.
- FIG. 5 is a diagram showing the flow of magnetic flux inside the electromagnetic actuator according to the position of the mover according to the first embodiment of the present invention.
- FIG. 6 is a characteristic diagram showing the position of the mover, the opening side coil current, and the output of the magnetic flux sensor when the mover according to the first embodiment of the present invention moves to the closed state force open state.
- FIG. 7 is a diagram for explaining the operation of the state grasping device according to the first embodiment of the present invention.
- FIG. 8 is a characteristic diagram showing the mover position and the calculated waveforms e and f when the mover according to the first embodiment of the present invention moves to the closed state force open state.
- FIG. 9 is a characteristic diagram showing the mover position, the closing coil current, and the output of the magnetic flux sensor when the mover according to the first embodiment of the present invention moves to the open state force closed state.
- FIG. 10 is a characteristic diagram showing the mover position and operation waveforms g and h when the mover according to the first embodiment of the present invention moves the open state force to the closed state.
- FIG. 11 is a diagram for explaining the characteristic points of the operation waveform f according to the first embodiment of the present invention.
- FIG. 12 is a diagram showing an example of the relationship between the magnetic flux sensor output and the position of the mover according to the first embodiment of the present invention.
- FIG. 13 is a schematic configuration diagram (closed state) showing an electromagnetic operating mechanism according to Embodiment 2 of the present invention.
- FIG. 14 is a schematic configuration diagram (closed state) showing an electromagnetic operating mechanism according to a third embodiment of the present invention.
- FIG. 15 is a schematic configuration diagram (closed state) showing an electromagnetic operating mechanism according to Embodiment 4 of the present invention.
- FIG. 16 is a schematic configuration diagram (closed state) showing an electromagnetic operating mechanism according to a fifth embodiment of the present invention.
- FIG. 17 is a characteristic diagram showing the position of the mover and the output of the magnetic flux sensor when the mover according to Embodiment 6 of the present invention moves from the closed state to the open state.
- FIG. 18 is a block configuration diagram showing an open / close control device according to a seventh embodiment of the present invention. Explanation of symbols
- Electromagnetic operation mechanism 2a Closed side coil, 2b Open side coil, 3 Mover, 4 Yoke, 5 Permanent magnet, 6a, 6b Magnetic flux sensor, 7 Current sensor, 8 Magnetic flux sensor insertion hole, 9 Movable shaft 10a, 10b, 11a, l ib Search coil, 20 Drive power supply, 21 Waveform acquisition means, 22 Storage means, 23 Waveform calculation means, 24 State determination means, 30 Vacuum valve, 31 Insulation rod, 32 Wipe spring, 33 fixed Contact 34 Movable contact, 40 Open / close control device, 41 Status information display means, 42 Status information transmission means, 43 Open / close command transmission means, 44 Open / close command control means, 45 Open / close command input means, 46 Trip signal input means
- FIGS. 1 and 2 are schematic configuration diagrams showing a power switch using the electromagnetic operation mechanism (electromagnetic actuator) according to Embodiment 1 of the present invention. Normally, one phase of a three-phase power system is shown. It is shown. Figure 1 shows the power system open, and Figure 2 shows the power closed.
- the power system is opened and closed by moving a movable contact (operated device) 34 inside the vacuum valve 30.
- the movable contact 34 is driven by the electromagnetic actuator 1.
- a contact pressure is applied between the insulating rod 31 for insulating the power system and the electromagnetic actuator 1, and between the movable contact 34 and the fixed contact 33.
- a wipe spring 32 is arranged for the purpose. The wipe spring 32 is assembled in a compressed state, and is mechanically fixed so as not to extend beyond a certain length.
- the electromagnetic actuator 1 operates by energizing the electromagnetic actuator 1 from the power supply circuit 20 by an open / close command signal of an external force.
- the drive distance L of the mover 3 of the electromagnetic actuator 1 connected to the movable contact 34 is set to be larger than the drive distance K of the movable contact 34.
- the movable element 3 and the movable contact 34 are connected to move in the closing direction, and the movable element 3 and the movable contact 34 are separated by a distance.
- the mover 3 is moved by a distance of (L ⁇ K).
- Move and wipe spring 32 contracts by the length of (L-K).
- the movable contact 34 is pressed against the fixed contact 33 with a spring force corresponding to the amount of shrinkage (L—K) of the wipe spring.
- the mover 3 when driven from the closed state to the open state, first, the mover 3 starts to move, and accordingly, the wipe spring 32 extends. During this time, the movable contact 34 is in contact with the fixed contact 33 and stops. When the mover 3 moves by (L ⁇ K), the wipe spring 32 extends to the maximum length, and from this point, the mover 3 and the movable contact 34 are connected to move. This point is called the wipe completion point.
- FIG. 3 is a configuration diagram showing a schematic structure of the electromagnetic actuator and the state grasping device according to Embodiment 1 of the present invention
- FIG. 3 (a) is a diagram showing the configuration of the electromagnetic actuator and the state grasping device
- 3 (b) is a view showing a part of the yoke (fixed iron core) of the electromagnetic actuator
- FIG. 3 (b) is a cross-sectional configuration view taken along line BB in FIG. 3 (a).
- the electromagnetic actuator 1 includes a yoke 4, a movable element (movable iron core) 3 configured to be movable with respect to the yoke 4, a closing side coil 2 a and an opening side coil 2 b that are excited by the drive power supply circuit 20, A permanent magnet 5 that is installed on the outer periphery of the mover 3 and maintains an open or closed state, a movable shaft 9, and magnetic flux sensors 6 a and 6 b inserted into the yoke 4.
- the mover 3 and the movable shaft 9 are fixed, and the mover 3 is configured to move substantially linearly in the axial direction of the movable shaft 9 inside the yoke 4. In Fig. 3, the mover 3 is in contact with the end face of the yoke 4 on the vacuum valve side (upper side).
- the power supply circuit 20 charges an internal capacitor (not shown) with a power supplied from the outside, and the coil 2a or the open command signal is supplied according to a close command signal or an open command signal given from the outside.
- the electric charge charged to the coil 2b is discharged for a predetermined time.
- the method of coil discharging the electric charge charged in the capacitor is shown, but it is also possible to use a method in which the current supplied by the external power supply is directly supplied to the coil 2a or the coil 2b.
- the magnetic flux sensors 6a and 6b are inserted into magnetic flux sensor insertion holes 8 provided in the yoke 4, as shown in FIG. 3 (b).
- the closing-side magnetic flux sensor 6a is arranged at a position where the magnetic flux of the permanent magnet 5 passes while the mover 3 is held at the closing position.
- the opening side magnetic flux sensor 6b is arranged at a position where the magnetic flux of the permanent magnet 5 passes while the mover 3 is held in the open position. Has been.
- the magnetic flux sensors 6a and 6b are hall ICs or hall ICs that incorporate a calibration function into the hall elements. Power is supplied from the waveform acquisition means 21 and the magnetic flux measured at the positions of the magnetic flux sensors 6a and 6b. Convert to voltage or current and output.
- this output signal is subjected to AZD conversion at a constant sampling interval during the period until the power supply circuit 20 completes discharging, and the converted force change waveform data is also converted. Is stored in memory 22.
- timing for ending the AZD conversion may be determined in advance within the waveform acquisition means 21 as necessary to exactly match the timing at which the power supply circuit 20 completes the discharge.
- the current sensor 7 can be a CT type AC current sensor.
- the current sensor 7 converts the current value passed from the power supply circuit 20 to the coil 2a or the coil 2b into a voltage or current signal and outputs the voltage or current signal.
- this output signal is AZD-converted at a constant sampling interval during the period until the power supply circuit 20 completes discharging, and the converted current change waveform data. Is stored in the memory (storage means) 22.
- the waveform calculation means 23 reads the magnetic flux change waveform data and the current change waveform data AZD-converted by the waveform acquisition means 21 from the memory 22, and performs the above described magnetic flux change waveform data and the current change waveform data according to the procedure described later. Calculate and create calculated waveform data.
- the created computed waveform data is temporarily stored in the memory 22.
- the actuator drive start timing, wipe completion timing, operation completion timing, drive speed, etc. are calculated from the calculated waveform data, current change waveform data, and magnetic flux change waveform data stored in the memory 22.
- the numerical data (state value) representing the operating state of the actuator is calculated. Further, it is determined whether or not these state values are within a normal range of predetermined state values, and a state determination signal is output.
- FIG. 4 is a flowchart for explaining the operation of the state grasping device and the switching control device according to Embodiment 1 of the present invention, and shows the operation at the time of opening that moves from the closed state to the opened state.
- the power supply circuit 20 discharges the charge charged in the capacitor to the open-side coil 2b for a certain time in steps S2 to S3.
- step S4 to step S7 the waveform acquisition means 21 performs AZD conversion on the output signals from the current sensor 7 and the magnetic flux sensors 6a and 6b at a constant sampling interval, and the converted temporal change waveform data is stored in the memory 22. save.
- the waveform calculation means 23 reads the magnetic flux change waveform data and the current change waveform data stored in the memory 22, and the magnetic flux change waveform data included in the region S a predetermined time before the current peak position. Then, coefficients ⁇ and ⁇ described later are determined from the current change waveform data and a calculation waveform is created. In step S 11, the created calculated waveform is stored in the memory 22.
- step S12 the state determination means 24 extracts feature points such as the actuator operation start point and wipe completion point from the calculated waveform e stored in the memory 22.
- step S13 the extracted feature points are extracted.
- the actuator driving speed is estimated from the calculated waveform f using the waveform value at the point and the time.
- step S14 to step S16 it is determined whether or not the estimated driving speed value is within a predetermined normal range, and a normal or abnormal determination result is output.
- FIGS. 5 (a) to 5 (f) are diagrams showing the flow of main magnetic flux inside the electromagnetic actuator according to the position of the mover 3.
- FIG. 5 (a) is a closed state
- FIG. ) Shows the main magnetic flux flow by the permanent magnet in the open state.
- Figures 5 (c) to 5 (f) show the flow of magnetic flux generated by the permanent magnet 5 and the opening side coil 2b. Although the magnetic flux lines are symmetrical, only the magnetic flux lines on the right half are shown in the figure.
- the magnetic force generated by the permanent magnet 5 exerts a force (holding force) that holds the movable element 3 in contact with the yoke 4.
- a current is applied to the opening side coil 2b in a direction that cancels the magnetic flux generated by the permanent magnet 5, the current is sufficiently increased. If it is too large, the holding force by the permanent magnet 5 disappears, and the moving element 3 moves downward (opening direction) by the magnetic flux generated by the coil 2b, and the lower surface of the yoke 4 (opening side) Touch the edge.
- the magnetic force generated by the permanent magnet 5 causes a holding force to be generated in the mover 3 so as to hold the contact with the end face on the opening side (FIG. 5 (b)). If the closing coil 2a is energized while the mover 3 is in contact with the open end surface, the mover 3 can be moved to the closing side and held in that position by the same operation (Fig. 5 (a)).
- the generated magnetic flux ⁇ is also measured at the same time. ⁇ will be described later.
- c— 1 ⁇ is measured by magnetic flux sensors 6a and 6b.
- the magnetic flux generated by the coil 2b flows from the contact surface between the yoke 4 and the closing end face (upper end face in the figure) of the mover 3 to the opening end face (lower end face in the figure) of the mover 3. Pass through the yoke 4 and pass through a part of the mover 3 through the permanent magnet 5 from the yoke 4 and the path ( ⁇ to ⁇ ).
- the direction in which the magnetic flux flows is opposite to the direction in which the magnetic flux ⁇ produced by the coil 2b flows.
- the magnetic flux component produced by the coil 2b and the component measured by the magnetic flux sensor 6a is ⁇ .
- the component measured by sensor 6b is ⁇ .
- the magnetic flux measured by the magnetic sensor 6b on the opening side is the ⁇ produced by the permanent magnet 5 and the coil
- Fig. 5 (e) shows the state immediately after the mover 3 has completed the movement.At this point, the coil 2b is still energized, and the direction of the magnetic flux ⁇ created by the coil 2b and the permanent direction are permanent. Since the direction of the magnetic flux ⁇ created by the magnet 5 is the same direction, magnetic saturation may occur. [0030] Energization of coil 2b is completed after a certain period of time has elapsed since the mover 3 has been moved (Fig. 5 (e)) (actually, after a certain period of time has elapsed since the start of energization of coil 2b) The result is as shown in Fig. 5 (f). In FIG.
- the residual magnetism is applied to the yoke 4 and the movable element 3 due to the influence of the excitation of the yoke 4 and the movable element 3 by the coil 2b between FIG. 5 (c) and FIG. 5 (e).
- the magnetic flux ⁇ , ⁇ , ⁇ is created by this remanent magnet ⁇ . For this reason, in the magnetic flux sensor 6a, the magnetic flux y y_l y_2
- the magnetic flux sensor 6b measures the y_l P y value obtained by adding the magnetic flux ⁇ to the magnetic flux ⁇ generated by the permanent magnet 5.
- the magnetic flux change measured by the magnetic flux sensors 6a and 6b is a composite of the component due to the change in the position of the mover 3 and the component due to the change in the coil current value I.
- the value ⁇ detected by the magnetic flux sensor 6a is the magnetic flux ⁇ of the permanent magnet that depends on the position X of the mover 3.
- the position x of the mover 3 and the coil current I are expressed as x (t) and I (t) because they depend on the time t.
- k is a proportional coefficient.
- ⁇ (X) is a function that shows the relationship of ⁇ to X.
- Both ⁇ and ⁇ are the size of the gap between the mover 3 and the yoke 4, and the gap
- k is a proportional coefficient
- k and k are constants.
- a magnetic flux change waveform representing a temporal change in the output signals from the magnetic flux sensors 6a and 6b is acquired, and similarly, the coil 2b
- the waveform indicating the time change of the energization current current change waveform indicating the time change of the output signal from the current sensor 7
- the current change component can be eliminated from the magnetic flux change waveform, and the waveform obtained as a result is a waveform showing the time change of the position of the mover 3.
- FIG. 6 shows the position of the mover 3 (waveform a), the output of the magnetic flux sensor 6a (waveform b), the output of the magnetic flux sensor 6b (waveform) when the mover 3 moves from the closed position to the open position. c), and changes over time in the energizing current (waveform dl) of open coil 2b.
- the horizontal axis is time
- the vertical axis is the scale for the output signal of the current sensor 7
- the right side is the scale for the output signal of the magnetic flux sensor.
- the vertical axis for the waveform a is a scale indicating the position of the mover 3.
- Waveform b is a force that changes monotonically from the start of movement of mover 3 (time T2) to about 1Z3 of the total travel distance.
- the output is almost flat after 1Z3. This is because as the mover 3 moves, the magnetic flux generated by the permanent magnet 5 flows on the open side and hardly flows on the closed side.
- the output of waveform c changes monotonically throughout the entire process. This is because the actuator is asymmetric in the A and B parts in Fig. 7 (a), so even if the mover 3 moves from the open side to the closed side (Fig. 7 (a) ) ⁇ Fig. 7 (b)), because the magnetic resistance of the magnetic path of the A part increases, and the magnetic flux ⁇ continues to flow to the B part.
- FIG. 8 shows the result of subtraction after multiplying the current change waveform by a constant from the magnetic flux change waveform as an example of the calculation performed in step S 11.
- Waveform e is the difference between magnetic flux change waveform b and current change waveform dl multiplied by coefficient ⁇
- waveform f is the difference between magnetic flux change waveform c and current change waveform dl multiplied by coefficient. .
- the coefficients ⁇ and ⁇ are determined on the condition that a flat region s is formed in the waveform e and the waveform f before the mover 3 starts moving. This is because the calculated waveforms e and f must show the relationship between the position X of the mover 3 and the time t as shown in Equations (1) and (2). This is also a condition that determines the reason why there should be no temporal change in waveforms e and f before child 3 starts moving.
- the condition for flatness is to determine OC and ⁇ so that the time change of the waveform is minimized within the region s.
- the region s can be determined in advance by a method specific to the actuator, a method defined as a time region a certain time before the current peak position, or a method of estimating the magnetic flux change waveform force of the magnetic flux sensor. .
- the waveform a indicating the displacement of the mover 3 in the region from the start of movement of the mover 3 to about 1Z3 of the operation is obtained. Correlation is obtained. In particular, the movement point (T2) and the wipe completion point (T5) of the mover 3 are reproduced.
- the calculated waveform f has a correlation with the waveform a indicating the displacement of the mover 3 over the entire force stroke, where the sensitivity of the mover 3 at the start of movement (T2) is lower than the calculated waveform e. Has been obtained.
- a flat area s is determined (step S8 to step S9 in FIG. 4).
- the value fluctuates rapidly immediately after the start of discharge (point TO), and then a flat region s is formed.
- the yoke 5 of the actuator is magnetically saturated by the magnetic flux generated by the permanent magnet 5 in a stationary state.
- the coil current value I and the measured value B of the magnetic flux sensor are between the time when the discharge current rises and the magnetic saturation state inside the yoke 5 is canceled until the time when the mover 3 starts to move. The relationship of ⁇ holds.
- the above flat region s can be considered as the time until the mover 3 starts to move when the magnetic saturation is resolved.
- the time point at which the magnetic saturation is eliminated is almost determined by the structure of the actuator 1 and the coil current value, and is therefore almost the same time for a switchgear having the same configuration. Therefore, if the time when the magnetic saturation is eliminated is measured in advance and stored in the memory 22 as T1, the start time of the flat region s can be determined. Further, as described above, the time point at which the saturation is canceled is determined by the coil current value. Therefore, in FIG. 6, the time point when the coil current value I becomes equal to the predetermined constant value ⁇ is the time point T1 at the beginning of the flat region s. It is also good.
- the current peak point ⁇ 3 is detected in order to determine ⁇ 2 at the end point of the flat region s (the point where the movable element 3 starts to move).
- the coil drive current generally has a waveform d 1 as shown in FIG.
- the force that increases the coil current with the time constant determined by the capacitance C of the capacitor and the inductance L of the coil from the TO start point of the capacitor discharge.
- Actuator mover 3 As the coil begins to move, the inductance L increases rapidly, limiting the coil current.
- the current change waveform dl has a peak as shown in Fig. 6.
- the operation start time T2 of the mover can be estimated as (T3 ⁇ ) from the current peak time T3.
- a quadratic function approximation is performed on the change waveform data near the time when the current value reaches the maximum value, and the time when the approximate function takes an extreme value is set as the peak time.
- the noise component of the output of the current sensor is sufficiently small, the point at which the current value becomes maximum may be used as the peak point.
- the peak time may be the time when the maximum value is obtained after smoothing the current change waveform data.
- the second current peak may appear after the first current peak, and the second current peak may be larger than the first current peak.
- the first current peak is the current peak time.
- b, c, and I are AZD-converted at a fixed sampling period and stored in the memory 22 k k k
- the change waveform data of the magnetic flux sensors 6a and 6b and the change waveform data of the current sensor is the same, and the number of data is N. Also,
- [0048] shows that the sum of the sampled data included in the region s is taken. Further, M is the number of data included in the region s among the sampled change waveform data of each sensor.
- the magnetic flux data c has a minus sign k.
- FIG. 9 shows the position of the mover 3 (waveform a), the output of the magnetic flux sensor 6a (waveform b), the output of the magnetic flux sensor 6b (waveform) when the mover 3 moves from the open position to the closed position. c) and the time variation of the energizing current (waveform d2) of the closing coil 2a.
- the horizontal axis is time
- the vertical axis is the scale for the output signal of the current sensor 7
- the right side is the scale for the output signal of the magnetic flux sensor.
- the vertical axis for the waveform a is a scale indicating the position of the mover 3.
- the calculation coefficients ⁇ and ⁇ of the current change waveform are determined under the condition that the waveform force becomes flat before the mover 3 starts moving, and the calculated waveforms g and h are Calculate as follows.
- FIG. 10 shows calculation waveforms g and h obtained by calculating the magnetic flux change waveform and the current change waveform.
- the calculated waveform g and the calculated waveform h have a good correlation with the position of the mover 3 from the time when the mover 3 starts moving to the completion of the operation.
- the opening operation (step S12 to step S16 in FIG. 4) will be described.
- the calculated waveform e is referred to, and the three feature points P4, P5, and P6 shown in FIG. 11 are searched from the waveform data to calculate T4, T5, and T6.
- the characteristic point P4 is a point at which the value starts to drop sharply after the flat region s, and is a point representing an operation start time T4 (a time corresponding to T2) of the mover 3.
- Characteristic point P5 is a point at which the waveform force that has monotonously decreased after T4 starts to temporarily increase, and is the time point that coincides with wipe spring completion point T5.
- the feature point P6 is a point where the waveform that has started to decrease after T5 starts to increase again, and coincides with the driving completion point T6 of the mover 3.
- the feature point P5 and the feature point P6 may not appear as a point that turns from a decrease to an increase, but may appear as a turning point, that is, a point where the slope changes rapidly.
- a current peak point detection method and Similarly, there are a method using the maximum and minimum values as feature points, and a method using the point where the absolute value of the second derivative of the waveform exceeds a predetermined threshold as the feature points.
- Waveform f approximately matches stroke waveform a.
- This difference corresponds to the drive distance L of the mover 3. That is, using the correction coefficient ⁇ ,
- the correction coefficient ⁇ can be obtained as follows.
- the driving speed V at the time of opening of the mover 3 is calculated from the difference between the value at ⁇ 5 of the waveform F and the value at ⁇ 5 + ⁇ 7.
- ⁇ 7 is a predetermined fixed value.
- the speed at which the speed is obtained based on the wipe completion time ⁇ 5 may be obtained at a specific time, using the value of the specific waveform F as a reference point.
- the speed V is compared with the predetermined lower and upper limit values of the speed, and if the speed falls below the lower limit value or exceeds the upper limit value, the speed is abnormal. Judgment and output an abnormality judgment signal to the external device.
- the driving speed of the movable element 3 it is possible to calculate the driving speed of the movable element 3 and determine the state, which are parameters indicating the state of the switchgear, from the operation waveforms g and h shown in FIG.
- the wipe completion point T5 from the operation waveforms g and h shown in FIG. 10
- the wipe completion point T5 is difficult to calculate the wipe completion point T5 from the operation waveforms g and h shown in FIG. 10
- the wipe completion point T5 it is possible to calculate the wipe completion point T5.
- the correction coefficients t and u for the computed waveform g and computed waveform h are
- the speed at the time of closing can be calculated using the value of a specific time or specific waveform F as a reference point.
- the electrode may be welded due to the arc current generated during the closing operation, and the subsequent opening operation may not be performed. Also in this case Similarly, urgent maintenance is required.
- the decrease in the driving speed is caused by an increase in the mechanical frictional force on the driving mechanism or a lack of driving current. It can be considered as a sign of abnormality. Since these abnormalities are highly likely to cause a malfunction of the drive mechanism, it is necessary to perform maintenance in the same manner.
- the driving speed of the mover can be known from the calculated waveform obtained by calculating the magnetic flux change waveform and the current change waveform. It is possible to grasp the state of the actuator, the state of the movable contact operated by the actuator, or the state of the switchgear, which has the effect of obtaining a small, inexpensive and accurate state grasping device. is there.
- the sensitivity ratio of each sensor is p, q, and r, respectively.
- the waveform F is a
- ⁇ and ⁇ can be expressed as a flat area before the mover 3 is driven.
- the relationship between the magnetic flux generated by the permanent magnet and the position of the mover 3 has a non-linear correlation, for example, as shown in FIG. If there is such a non-linear correlation, for example, even if the mover 3 moves at a constant speed until the end of the initial force, for example, at the speed calculated based on the waveform F, the mover 3 is in the vicinity of the start of movement. In comparison, the speed is measured so that the speed near the driving completion point is slow.
- the speed when measuring the speed at a specific reference point such as the wipe completion point, the speed can be converted to an accurate speed by using the speed correction coefficient z at the reference point.
- [0074] may be defined as a speed correction function.
- the discrete force correction coefficient data y for the correlation force between X and b is also created and stored in the memory 22 as a database.
- the coil current value at the operation start point can also be used as another state quantity. Moreover, both the speed and the operation start point may be used.
- the operation waveforms e, f, g, h are derived, the operation start point of each waveform is calculated, and the current value at this point is determined in advance.
- the value falls below the specified lower limit value or exceeds the upper limit value, an error is judged and an external error judgment output is performed.
- the operation start point of the mover 3 is a point where the holding force of the mover 3 and the electromagnetic force by the coil are balanced. Therefore, the holding force of the mover 3 can be known from the current value at the operation start point.
- the decrease in the current value at the operation start point represents a decrease in the holding force, which may be caused by an abnormal contact surface or demagnetization of the permanent magnet. Cause.
- an increase in the current value at the operation start point represents an increase in the holding force of the mover 3, but an increase in the holding force with time can be considered as an increase in the static friction force. Since the increase in static friction force causes malfunction of the actuator, the maintenance of the switchgear is performed before failure occurs by judging the signs of increase from the reference value of the static friction force. It becomes possible to prevent the occurrence of malfunction. [0077] In the above embodiment, the operation waveforms e and f at the time of opening and the operation waveforms g and h at the time of closing are calculated, and calculation is performed using the feature points obtained from the operation waveform e.
- the calculation waveform used may be one of the calculation waveforms e, f, g, and h.
- the magnetic flux change waveform via the operation coefficients ⁇ , ⁇ , ⁇ , ⁇ .
- the arithmetic waveform may be calculated using an arithmetic expression derived theoretically.
- FIG. 13 is a configuration diagram (closed state) showing an electromagnetic actuator according to Embodiment 2 of the present invention.
- the magnetic flux sensors 6a and 6b are provided with a groove force on the inner surface side of the yoke 4 and are incorporated in the groove processing portion.
- FIG. 14 is a configuration diagram (closed state) showing the electromagnetic actuator according to the third embodiment of the present invention.
- the magnetic flux sensors 6a and 6b are fixed to the inner surface side of the yoke 4.
- the magnetic flux sensors 6a and 6b are attached to a portion where the magnetic flux is easily saturated, such as a corner portion of the yoke 4. 4Measured values according to the internal magnetic flux measurement can be obtained.
- FIG. 15 is a configuration diagram (closed state) showing the electromagnetic actuator according to Embodiment 4 of the present invention.
- the search coils 10a and 10b are wound so as to overlap with the coils 2a and 2b, respectively, and an output signal proportional to the rate of change of magnetic flux passing through the search coils 10a and 10b is obtained.
- the magnetic flux penetrating the search coils 10a and 10b can be obtained, and an output equivalent to that obtained when the magnetic flux sensors 6a and 6b are inserted inside the yoke 4 can be obtained. .
- FIG. 16 is a configuration diagram (closed state) showing an electromagnetic actuator according to Embodiment 6 of the present invention.
- the search coils 11a and l ib are attached to the yoke 4 so that an output signal proportional to the rate of change of magnetic flux passing through the search coils 1 la and l ib is obtained.
- the magnetic flux penetrating the search coils 11a and ib can be obtained, and an output equivalent to the case where the magnetic flux sensors 6a and 6b are inserted in the yoke 4 can be obtained.
- the device state is determined by calculating the magnetic flux change waveform and the current change waveform, but it is also possible to determine the device state directly from the magnetic flux change waveform.
- the characteristic changes in the curvature of the waveform such as t and u of the magnetic flux sensor output waveform b and V of the magnetic flux sensor output waveform c, are the movement start point and wipe completion point of the mover. , Match the operation completion point.
- the state of the switchgear can be estimated based on whether or not the time interval of each feature point is also changed by the standard value force.
- FIG. 18 is a block diagram showing an opening / closing control apparatus according to Embodiment 7 of the present invention.
- the opening / closing control device 40 includes a waveform acquisition means (AD conversion) 21, a storage means (memory) 22, a waveform calculation means 23, a state determination means 24, a state information display means 41, a state information transmission means 42, and an opening / closing command transmission means. 43, an open / close command control means 44, an open / close command input means 45, and a trip signal input means 46.
- the open / close command transmission means 43 is configured to transmit an open command or a close command to one or a plurality of drive power supplies 20.
- the open / close command input means 45 receives an open command signal or a close command signal for each drive power supply from an external control device.
- the open / close command control means 44 transmits an open / close command from the open / close command transmitting means 43 to each drive power supply 20 in response to the open / close command signal input to the open / close command input means 45. Further, the opening / closing command control means 44 instructs the waveform acquisition means 21 to start AD conversion at the same time when the opening / closing command is transmitted or after a certain time has elapsed.
- the drive power supply 20 energizes the coil 2 of the actuator 1 for a certain period of time after receiving the opening / closing command.
- the waveform acquisition means 21 reads a coil current value energized to the actuator 1 from the drive power supply 20 and a signal from a magnetic flux sensor (not shown) built in the actuator 1, and reads them at a constant sampling interval. After the AD conversion of the obtained value is repeated and the conversion is performed for a predetermined number of times or for a predetermined time, the AD conversion is terminated and the acquired magnetic flux waveform data and current waveform data are stored in the memory 22.
- the waveform calculation means 23 performs calculation processing of the magnetic flux waveform data and the current waveform data after the AD conversion is completed, and stores the calculated waveform data in the memory 22.
- the state determination means 24 reads the calculation data stored in the memory 22, calculates state quantities such as the driving speed of the movable element 3, the actuator holding force, and the actuator static friction force, Then, the degree of failure is determined by comparing with the reference value of each state quantity stored in the memory 22. That is, a major fault condition that requires urgent maintenance, a minor fault condition that requires advance maintenance, or a correct fault condition. The normal state judgment is performed !, and the judgment result is stored in the memory 22.
- the state display unit 41 Based on the determination result of the state determination unit 22, the state display unit 41 performs LED lighting or display according to the degree of failure using a display monitor.
- the status information transmitting means 42 transmits status information to an external control device by using a contact signal, RS-422, and a network function.
- the opening / closing command control means 44 determines whether or not to transmit a command to the opening / closing command transmission means 43 when the next opening / closing command is received based on the state determination result. In other words, transmission of an open / close command is prohibited for an actuator for which a major failure was determined during the previous operation.
- the open / close command control means 44 causes the open / close command transmission means 43 to transmit the open command regardless of the serious failure state. This is because in the event of a power equipment accident, priority is given to accident interruption.
- the switchgear controller 44 controls the transmission of a trip signal or an open command to a higher-level switchgear, thereby Expansion can be prevented.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Linear Motors (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/282,589 US7739058B2 (en) | 2006-03-17 | 2006-03-17 | Condition-monitoring device and switch-control device provided with the same |
CN2006800529112A CN101375359B (zh) | 2006-03-17 | 2006-03-17 | 状态把握装置以及具备该状态把握装置的开闭控制装置 |
JP2008506079A JP4535193B2 (ja) | 2006-03-17 | 2006-03-17 | 状態把握装置およびこの状態把握装置を備えた開閉制御装置 |
PCT/JP2006/305362 WO2007108063A1 (ja) | 2006-03-17 | 2006-03-17 | 状態把握装置およびこの状態把握装置を備えた開閉制御装置 |
EP06729352.2A EP1998351B1 (en) | 2006-03-17 | 2006-03-17 | State grasping device and open/closure controller having this state grasping device |
TW095134533A TW200737260A (en) | 2006-03-17 | 2006-09-19 | Condition grasping device and switching control device |
HK09105192.6A HK1127528A1 (en) | 2006-03-17 | 2009-06-10 | State grasping device and open/closure controller having this state grasping device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/305362 WO2007108063A1 (ja) | 2006-03-17 | 2006-03-17 | 状態把握装置およびこの状態把握装置を備えた開閉制御装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007108063A1 true WO2007108063A1 (ja) | 2007-09-27 |
Family
ID=38522104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/305362 WO2007108063A1 (ja) | 2006-03-17 | 2006-03-17 | 状態把握装置およびこの状態把握装置を備えた開閉制御装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7739058B2 (ja) |
EP (1) | EP1998351B1 (ja) |
JP (1) | JP4535193B2 (ja) |
CN (1) | CN101375359B (ja) |
HK (1) | HK1127528A1 (ja) |
TW (1) | TW200737260A (ja) |
WO (1) | WO2007108063A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009176527A (ja) * | 2008-01-23 | 2009-08-06 | Mitsubishi Electric Corp | 電磁操作式開閉装置 |
KR101142200B1 (ko) | 2010-10-15 | 2012-05-07 | 엘에스산전 주식회사 | 전자 개폐장치 |
JP2012113964A (ja) * | 2010-11-25 | 2012-06-14 | Mitsubishi Electric Corp | 開閉装置 |
JPWO2017154784A1 (ja) * | 2016-03-07 | 2018-03-15 | 三菱電機株式会社 | 電磁式可動装置 |
WO2020129518A1 (ja) * | 2018-12-19 | 2020-06-25 | オムロン株式会社 | 継電器状態判定装置、継電器状態判定システム、継電器状態判定方法、およびプログラム |
WO2020137260A1 (ja) * | 2018-12-28 | 2020-07-02 | オムロン株式会社 | 継電器状態予測装置、継電器状態予測システム、継電器状態予測方法、およびプログラム |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101523535B (zh) * | 2006-09-28 | 2012-07-11 | 三菱电机株式会社 | 电磁操作开闭装置 |
EP2409202B1 (en) * | 2009-03-16 | 2019-09-18 | Labinal, LLC | Electrical switching apparatus |
CN101509961B (zh) * | 2009-03-23 | 2011-08-17 | 哈尔滨工业大学 | 条形永磁铁截面磁通测量装置及其测量方法 |
EP2521154B1 (en) | 2011-05-02 | 2016-06-29 | ABB Technology AG | An electromagnetically actuated switching device and a method for controlling the switching operations of said switching device. |
FR2975774B1 (fr) * | 2011-05-25 | 2014-01-17 | Eurocopter France | Procede de determination de l'effort statique developpe par une servocommande |
US20130043111A1 (en) * | 2011-08-15 | 2013-02-21 | Honeywell International Inc. | Circuit breaker position sensing and health monitoring system |
DE102011081921A1 (de) * | 2011-08-31 | 2013-02-28 | Siemens Aktiengesellschaft | Magnetaktor und Verfahren zu dessen Einsatz an elektrischen Schaltanlagen |
DE202011109470U1 (de) * | 2011-12-22 | 2013-03-25 | Maschinenfabrik Reinhausen Gmbh | Antriebseinheit für Stufenschalter |
US9183996B2 (en) | 2012-06-27 | 2015-11-10 | Abb Technology Ltd | High voltage current interrupter and an actuator system for a high voltage current interrupter |
US20140002215A1 (en) * | 2012-06-29 | 2014-01-02 | Siemens Industry, Inc. | Electrical contact apparatus, assemblies, and methods of operation |
WO2016042803A1 (ja) * | 2014-09-18 | 2016-03-24 | 三菱電機株式会社 | 開閉器 |
KR101697678B1 (ko) * | 2014-12-30 | 2017-01-18 | 주식회사 효성 | 고속 스위치 장치 |
FR3053522B1 (fr) * | 2016-07-01 | 2018-08-17 | Safran Landing Systems | Electro-aimant lineaire bistable |
EP3270398B1 (en) * | 2016-07-12 | 2021-04-07 | ABB Schweiz AG | Actuator for a medium voltage circuit breaker |
US10580599B1 (en) * | 2018-08-21 | 2020-03-03 | Eaton Intelligent Power Limited | Vacuum circuit interrupter with actuation having active damping |
FR3090119B1 (fr) * | 2018-12-18 | 2022-03-04 | Electricite De France | Dispositif de mesure de l’état de fonctionnement d’au moins un matériel générant un champ magnétique |
FR3093226B1 (fr) * | 2019-02-25 | 2021-01-22 | Schneider Electric Ind Sas | Système d'actionnement pour une ampoule à vide |
US11152174B2 (en) | 2019-06-19 | 2021-10-19 | Eaton Intelligent Power Limited | Dual thomson coil-actuated, double-bellows vacuum circuit interrupter |
US11107653B2 (en) | 2019-06-26 | 2021-08-31 | Eaton Intelligent Power Limited | Dual-action switching mechanism and pole unit for circuit breaker |
CN110686883B (zh) * | 2019-11-01 | 2021-08-10 | 珠海优特电力科技股份有限公司 | 刀闸分合状态检测装置 |
CN112349525B (zh) * | 2020-07-10 | 2023-07-25 | 安徽一天电气技术股份有限公司 | 一种开关 |
US11183348B1 (en) | 2020-07-21 | 2021-11-23 | Eaton Intelligent Power Limited | Vacuum circuit interrupter with decelerator with integrated latch assembly |
DE102020213203A1 (de) * | 2020-10-20 | 2022-04-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren zum Bestimmen eines Schaltzeitpunkts eines Magnetventils |
FR3119461B1 (fr) | 2021-02-04 | 2023-07-21 | Schneider Electric Ind Sas | Procédé d’estimation d’un état de fonctionnement d’un appareil de commutation électrique et appareil de commutation électrique pour la mise en œuvre d’un tel procédé |
US20230343527A1 (en) * | 2022-04-21 | 2023-10-26 | Jst Power Equipment, Inc. | Circuit breaker with single phase control |
CN117894634A (zh) * | 2024-03-15 | 2024-04-16 | 厦门理工学院 | 一种基于恒磁感应强度的接触器驱动电路及装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2350724A (en) | 1999-05-29 | 2000-12-06 | Alstom Uk Ltd | Magnetic actuator arrangement |
JP2005078971A (ja) * | 2003-09-01 | 2005-03-24 | Mitsubishi Electric Corp | 電磁反発駆動電力用開閉装置 |
JP2005223168A (ja) * | 2004-02-06 | 2005-08-18 | Mitsubishi Electric Corp | 電磁アクチュエータ及びその制御方法 |
JP2006004902A (ja) * | 2003-09-01 | 2006-01-05 | Mitsubishi Electric Corp | 電磁操作機構およびそれを使用する電力用開閉装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4659969A (en) * | 1984-08-09 | 1987-04-21 | Synektron Corporation | Variable reluctance actuator having position sensing and control |
US4680562A (en) * | 1985-07-29 | 1987-07-14 | Westinghouse Electric Corp. | Integral circuit interrupter with separable modules |
JPH0415324A (ja) * | 1990-05-09 | 1992-01-20 | Tochigi Fuji Ind Co Ltd | 電磁アクチュエータ |
US5629869A (en) * | 1994-04-11 | 1997-05-13 | Abb Power T&D Company | Intelligent circuit breaker providing synchronous switching and condition monitoring |
DE29703587U1 (de) * | 1997-02-28 | 1998-06-25 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Elektromagnetischer Aktuator mit Näherungssensor |
US6208497B1 (en) * | 1997-06-26 | 2001-03-27 | Venture Scientifics, Llc | System and method for servo control of nonlinear electromagnetic actuators |
JPH11356029A (ja) * | 1998-04-08 | 1999-12-24 | Mikuni Corp | 電磁アクチュエ―タ |
WO2000028192A1 (en) * | 1998-11-06 | 2000-05-18 | Siemens Automotive Corporation | Method of compensation for flux control of an electromechanical actuator |
US6249418B1 (en) * | 1999-01-27 | 2001-06-19 | Gary Bergstrom | System for control of an electromagnetic actuator |
US6657847B1 (en) * | 1999-07-13 | 2003-12-02 | Siemens Automotive Corporation | Method of using inductance for determining the position of an armature in an electromagnetic solenoid |
JP3508636B2 (ja) * | 1999-08-19 | 2004-03-22 | 日産自動車株式会社 | 電磁駆動吸排気弁の制御装置 |
US6917203B1 (en) * | 2001-09-07 | 2005-07-12 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Current signature sensor |
US7099136B2 (en) * | 2002-10-23 | 2006-08-29 | Seale Joseph B | State space control of solenoids |
DE112005001085B4 (de) * | 2004-05-13 | 2014-01-23 | Mitsubishi Denki K.K. | Zustandserfassungsvorrichtung und Schaltsteuervorrichtung einer Leistungsschaltvorrichtung, welche die Zustandserfassungsvorrichtung verwendet |
-
2006
- 2006-03-17 CN CN2006800529112A patent/CN101375359B/zh not_active Expired - Fee Related
- 2006-03-17 WO PCT/JP2006/305362 patent/WO2007108063A1/ja active Application Filing
- 2006-03-17 US US12/282,589 patent/US7739058B2/en not_active Expired - Fee Related
- 2006-03-17 EP EP06729352.2A patent/EP1998351B1/en not_active Expired - Fee Related
- 2006-03-17 JP JP2008506079A patent/JP4535193B2/ja not_active Expired - Fee Related
- 2006-09-19 TW TW095134533A patent/TW200737260A/zh not_active IP Right Cessation
-
2009
- 2009-06-10 HK HK09105192.6A patent/HK1127528A1/xx not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2350724A (en) | 1999-05-29 | 2000-12-06 | Alstom Uk Ltd | Magnetic actuator arrangement |
JP2005078971A (ja) * | 2003-09-01 | 2005-03-24 | Mitsubishi Electric Corp | 電磁反発駆動電力用開閉装置 |
JP2006004902A (ja) * | 2003-09-01 | 2006-01-05 | Mitsubishi Electric Corp | 電磁操作機構およびそれを使用する電力用開閉装置 |
JP2005223168A (ja) * | 2004-02-06 | 2005-08-18 | Mitsubishi Electric Corp | 電磁アクチュエータ及びその制御方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1998351A4 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009176527A (ja) * | 2008-01-23 | 2009-08-06 | Mitsubishi Electric Corp | 電磁操作式開閉装置 |
KR101142200B1 (ko) | 2010-10-15 | 2012-05-07 | 엘에스산전 주식회사 | 전자 개폐장치 |
JP2012113964A (ja) * | 2010-11-25 | 2012-06-14 | Mitsubishi Electric Corp | 開閉装置 |
JPWO2017154784A1 (ja) * | 2016-03-07 | 2018-03-15 | 三菱電機株式会社 | 電磁式可動装置 |
US10593493B2 (en) | 2016-03-07 | 2020-03-17 | Mitsubishi Electric Corporation | Electromagnetically moving device |
WO2020129518A1 (ja) * | 2018-12-19 | 2020-06-25 | オムロン株式会社 | 継電器状態判定装置、継電器状態判定システム、継電器状態判定方法、およびプログラム |
JP2020102299A (ja) * | 2018-12-19 | 2020-07-02 | オムロン株式会社 | 継電器状態判定装置、継電器状態判定システム、継電器状態判定方法、およびプログラム |
US11860231B2 (en) | 2018-12-19 | 2024-01-02 | Omron Corporation | Relay state determination device, relay state determination system, relay state determination method, and non-transitory computer readable medium |
WO2020137260A1 (ja) * | 2018-12-28 | 2020-07-02 | オムロン株式会社 | 継電器状態予測装置、継電器状態予測システム、継電器状態予測方法、およびプログラム |
JP2020107541A (ja) * | 2018-12-28 | 2020-07-09 | オムロン株式会社 | 継電器状態予測装置、継電器状態予測システム、継電器状態予測方法、およびプログラム |
US11854752B2 (en) | 2018-12-28 | 2023-12-26 | Omron Corporation | Relay state prediction device, relay state prediction system, relay state prediction method, and non-transitory computer readable medium |
Also Published As
Publication number | Publication date |
---|---|
JPWO2007108063A1 (ja) | 2009-07-30 |
CN101375359B (zh) | 2011-07-27 |
TW200737260A (en) | 2007-10-01 |
HK1127528A1 (en) | 2009-09-25 |
TWI321333B (ja) | 2010-03-01 |
US7739058B2 (en) | 2010-06-15 |
EP1998351B1 (en) | 2013-05-22 |
EP1998351A1 (en) | 2008-12-03 |
US20090138212A1 (en) | 2009-05-28 |
EP1998351A4 (en) | 2011-06-22 |
JP4535193B2 (ja) | 2010-09-01 |
CN101375359A (zh) | 2009-02-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4535193B2 (ja) | 状態把握装置およびこの状態把握装置を備えた開閉制御装置 | |
KR101107809B1 (ko) | 상태 파악 장치 및 이 상태 파악 장치를 사용한 전력 개폐 기기의 개폐 제어 장치 | |
KR101360754B1 (ko) | 전자기 스위칭 장치의 콘택 부식을 결정하는 방법 및그러한 방법에 따라 동작하는 메커니즘을 포함하는 전자기스위칭 장치 | |
US9733292B2 (en) | Method for diagnosing an operating state of a contactor and contactor for implementing said method | |
EP2737325B1 (en) | System for measuring current and method of making same | |
JP5225198B2 (ja) | 開閉装置又は電磁操作装置の状態把握装置 | |
KR20000048202A (ko) | 스위치식 자기저항 머신과 그 제어 방법 | |
WO2019043828A1 (ja) | コンデンサ容量測定装置及び電力用機器 | |
EP2724121B1 (en) | Electromagnetic actuators and monitoring thereof | |
JPH06217585A (ja) | トルク推定機能を有する配電装置 | |
US20140354269A1 (en) | Method and apparatus for determining the condition of a control element | |
JP6933786B1 (ja) | 電力量計の開閉器の接点状態検出方法及び電力量計の開閉器駆動回路 | |
JP2003308751A (ja) | 開閉器の動作特性監視装置 | |
WO2021065219A1 (ja) | 電源コンデンサ静電容量測定装置及び電源コンデンサ静電容量測定方法 | |
JP2009212024A (ja) | 開閉装置 | |
RU2037896C1 (ru) | Способ проверки арматуры и устройство для его осуществления | |
JP2008293682A (ja) | 開閉器の動作特性監視装置 | |
KR100543738B1 (ko) | 변류기 개방 판단 방법 | |
KR100455183B1 (ko) | 왕복동식 압축기의 스트로크 추정방법 | |
RU2759588C1 (ru) | Способ непрерывного контроля исправности обмотки электромагнитного механизма, целостности цепей управления такой обмоткой и устройство для его осуществления (варианты) | |
RU2297704C1 (ru) | Способ защиты асинхронного двигателя от витковых замыканий | |
JP4773854B2 (ja) | 電磁操作開閉装置 | |
JP2005229663A (ja) | 電力変換回路における電位差測定方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 06729352 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2008506079 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200680052911.2 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12282589 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2006729352 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |