JP2014050279A - System and method for monitoring magnetic gear type power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system and a method for monitoring a magnetic gear type power generation device capable of quickly and properly informing abnormal portions during an abnormal time.SOLUTION: A system 20 for monitoring a magnetic gear type power generation device in an embodiment comprises: plural power generation side measuring parts 22 for measuring a rotation number of each power generation side rotor 4; and a power generation side abnormality determination part 32 for determining abnormality of the rotation number of each power generation side rotor 4 based on the rotation number of the power generation side rotor 4 measured by the plural power generation side measuring parts 22. The abnormal portions are specified by an abnormal portion specifying part 33 based on existence of the rotation number of each power generation side rotor 4 determined by the power generation side abnormality determination part 32. The abnormal portion specified by the abnormal portion specifying part 33 is informed by an abnormality informing part 34. The abnormal portion specifying part 33 specifies a driving side rotor 3 as an abnormal portion when the power generation side abnormality determination part 32 determines that abnormal rotation numbers exists in the plural power generation side rotors 4 adjacent to each other.

Description

  Embodiments described herein relate generally to a monitoring system and a monitoring method for a magnetic gear generator.

  Conventionally, a drive side rotor connected to a single drive source, a plurality of power generation side rotors magnetically coupled to the drive side rotor by a magnetic gear, a plurality of generators connected to each of the power generation side rotors, There is known a magnetic gear type power generation device having the above (for example, see Patent Document 1). Here, the magnetic gear is mainly composed of a permanent magnet attached to the drive-side rotor and a permanent magnet attached to the generator-side rotor, and the rotational driving force is generated by the magnetic coupling force generated between these permanent magnets. It is for transmission. Such a magnetic gear type power generator can be used, for example, in wind power generation equipment. In this case, the drive side rotor is rotationally driven by a drive source such as a blade of the wind power generation equipment, and the rotational driving force of the drive side rotor is The power is transmitted to each power generation side rotor by the magnetic coupling force of the magnetic gear, and each power generation side rotor rotates. Thereby, electric power generation is performed in each generator.

  In the magnetic gear type power generator described above, the electrical state such as the frequency of the power generated by each generator is usually measured, and the total output obtained from each generator and the life of each generator are determined. In consideration, the balance of each generator is adjusted. In addition, it is monitored whether or not an abnormality such as a variation in the output of each generator has occurred. If there is variation in the output of each generator, for example, if there is a generator whose output is lower than that of other generators, adjust the load on the generator and adjust the output of each generator. We are trying to eliminate variations. If these adjustments do not resolve the variations in the output of each generator, or if an abnormality is detected from the electrical state of each generator, stop the appropriate generator and use the remaining generators. Power generation continues. In this case, an alarm for notifying the abnormality of the stopped generator is issued.

British Patent No. 2463102

  However, in such a monitoring system for a magnetic gear type power generation device, the abnormality generated in the power generation side rotor may include not only an abnormality caused by the power generation side rotor but also an abnormality caused by the driving side rotor. .

  As such a case, for example, there is a case where some defect occurs in the permanent magnet attached to the drive side rotor. In this case, the magnetic coupling force by the magnetic gear is lower than the rotational driving force of the driving rotor. When the magnetic coupling force decreases, a phenomenon occurs in which the power generation side rotor slides with respect to the driving side rotor, and it becomes difficult to sufficiently transmit the rotational driving force of the driving side rotor to the power generation side rotor. When the slip phenomenon occurs, the output of the generator corresponding to the generator-side rotor is reduced and the output is adjusted. If slippage of the generator-side rotor is not resolved even by adjusting the output of the generator, the generator corresponding to the generator-side rotor is disconnected from the load-side power supply circuit and connected to the generator-side rotor (generator). An alarm indicating that an abnormality has occurred is issued.

  Thus, even when an abnormality caused by the drive side rotor occurs, the abnormality of the power generation side rotor can be notified. In this case, the supervisor checks the power generation side rotor. In other words, a large number of unnecessary alarms are issued, and the supervisor is forced to perform a large number of unnecessary confirmation operations. For this reason, a lot of time is spent in confirming the abnormal part. The same problem may exist even when the abnormality of the driving side rotor and the abnormality of the power generation side rotor are notified at the same time.

  The present invention has been made in consideration of such points, and an object of the present invention is to provide a monitoring system and a monitoring method for a magnetic gear power generator that can quickly and appropriately notify an abnormal location when an abnormality occurs. And

  A monitoring system for a magnetic gear generator according to an embodiment includes a drive-side rotor coupled to a drive source, and a magnetic gear coupled to the drive-side rotor by a magnetic gear, and arranged along the rotation direction of the drive-side rotor. A magnetic gear type power generation device having a plurality of power generation side rotors and a plurality of power generators coupled to each of the power generation side rotors is monitored. The monitoring system for the magnetic gear type power generator is based on a plurality of power generation side measurement units that measure the respective rotation speeds of the power generation side rotor, and the rotation speeds of the power generation side rotors measured by the plurality of power generation side measurement units. And a power generation side abnormality determination unit that determines whether or not each of the power generation side rotors has a rotational speed abnormality. Based on the presence / absence of an abnormality in the rotational speed of each of the power generation side rotors determined by the power generation side abnormality determination unit, the abnormal part is specified by the abnormal part specifying unit. The abnormal part specified by the abnormal part specifying part is notified by the abnormality notifying part. The abnormal part specifying unit specifies the drive-side rotor as an abnormal part when it is determined by the power generation side abnormality determining part that a plurality of power generation side rotors adjacent to each other have a rotational speed abnormality.

  The monitoring system of the magnetic gear type power generator according to the embodiment includes a drive side rotor connected to a drive source, a power generation side rotor magnetically coupled to the drive side rotor by a magnetic gear, and a connection to the power generation side rotor. And a magnetic gear generator having a generator. The monitoring system of the magnetic gear type power generator is measured by a drive side measurement unit that measures the rotation speed of the drive side rotor, a power generation side measurement unit that measures the rotation speed of the power generation side rotor, and the drive side measurement unit. Based on the rotational speed of the power generation side rotor measured by the power generation side measurement section, and a drive side abnormality determination section that determines the presence or absence of the rotational speed abnormality of the drive side rotor based on the rotational speed of the drive side rotor And a power generation side abnormality determination unit that determines whether or not there is an abnormality in the rotational speed of the power generation side rotor. Based on the presence / absence of an abnormality in the rotational speed of the drive-side rotor determined by the drive-side abnormality determination unit and the presence / absence of an abnormality in the rotational speed of the power generation-side rotor determined by the power generation-side abnormality determination unit The abnormal part is identified by the identifying unit. The abnormal part specified by the abnormal part specifying part is notified by the abnormality notifying part. The abnormal portion specifying unit is determined by the drive side abnormality determination unit to determine that the drive side rotor has a rotational speed abnormality, and the power generation side abnormality determination unit is determined to have a rotational speed abnormality in the power generation side rotor. In this case, the drive-side rotor is identified as an abnormal location without identifying the power generation-side rotor as an abnormal location.

  In addition, the monitoring method of the magnetic gear type power generator according to the embodiment includes a drive-side rotor coupled to a drive source, a magnetic gear coupled to the drive-side rotor by a magnetic gear, and an array along the rotation direction of the drive-side rotor. A magnetic gear type power generator having a plurality of generated power generation side rotors and a plurality of generators connected to each of the power generation side rotors is monitored. The monitoring method of the magnetic gear type power generator includes the step of measuring the number of rotations of each of the power generation side rotors, and the presence or absence of an abnormality in the number of rotations of each of the power generation side rotors based on the number of rotations of each of the power generation side rotors And a step of identifying an abnormal location based on the presence or absence of an abnormality in the rotational speed of each of the power generation side rotors and a step of notifying the identified abnormal location. When it is determined that a plurality of power generation side rotors adjacent to each other have a rotational speed abnormality, the drive side rotor is identified as an abnormal part in the step of identifying the abnormal part.

  Furthermore, the monitoring method of the magnetic gear type power generator according to the embodiment includes a drive side rotor connected to a drive source, a power generation side rotor magnetically coupled to the drive side rotor by a magnetic gear, and a connection to the power generation side rotor. And a magnetic gear generator having a generator. The monitoring method of the magnetic gear type power generator includes the step of measuring the rotational speed of the driving side rotor, the step of measuring the rotational speed of the power generating side rotor, and the rotational speed of the driving side rotor based on the rotational speed of the driving side rotor. Determining whether there is an abnormality in the rotational speed of the rotor; determining whether there is an abnormality in the rotational speed of the power generation side rotor based on the rotational speed of the power generation side rotor; and whether there is an abnormality in the rotational speed of the drive side rotor. And a step of identifying an abnormal location based on whether or not the rotational speed abnormality of the power generation side rotor is present, and a step of notifying the identified abnormal location. When it is determined that the drive-side rotor has a rotational speed abnormality and it is determined that the power generation-side rotor has a rotational speed abnormality, the power generation-side rotor is identified as an abnormal position in the step of identifying the abnormal position. The drive-side rotor is identified as an abnormal location.

FIG. 1 is a diagram illustrating an overall configuration of a magnetic gear type power generation device and a monitoring system thereof according to an embodiment. FIG. 2 is a diagram showing the concept of the magnetic gear of FIG. FIG. 3 is a diagram showing an example of the configuration of the magnetic gear of FIG. FIG. 4 is a diagram showing an example of the arrangement of permanent magnets in the magnetic gear of FIG. FIG. 5 is a diagram illustrating a configuration of the control device in FIG. 1. FIG. 6 is a diagram illustrating an example of a flowchart illustrating a monitoring method of the magnetic gear type power generation device of FIG. 1. FIG. 7 is a diagram showing specific details of the abnormal part in the flowchart of FIG. FIG. 8 is a diagram showing a case where a magnetic force defect has occurred in the drive-side rotor in the magnetic gear shown in FIG.

  A monitoring system and a monitoring method for a magnetic gear power generator according to an embodiment of the present invention will be described with reference to FIGS.

  First, the magnetic gear type power generator 1 will be described.

  As shown in FIG. 1 and FIG. 2, the magnetic gear type power generator 1 includes a drive side rotor (large rotor) 3 coupled to a single drive source 2 such as a blade for wind power generation, and the drive side rotor 3. A plurality of power generation side rotors (small rotors) 4 magnetically coupled to each other by a magnetic gear 10, and a plurality of generators 5 connected to each power generation side rotor 4. Among these, the power generation side rotor 4 is arranged along the rotation direction of the drive side rotor 3. Here, the magnetic gear 10 is mainly composed of a permanent magnet attached to the drive side rotor 3 and a permanent magnet attached to the power generation side rotor 4, and a magnetic coupling force generated between these permanent magnets. This is for transmitting the rotational driving force. With this magnetic gear 10, each power generation side rotor 4 is magnetically coupled to the drive side rotor 3. Details of the magnetic gear 10 will be described later.

  Each generator 5 is connected to a converter 6, and the converter 6 converts the electric power generated in the corresponding generator 5 from AC to DC. Each converter 6 is connected to a single inverter 7 that converts electric power converted into direct current into alternating current. The inverter 7 is connected to a load-side power supply circuit (not shown). A circuit breaker 8 is provided between each generator 5 and the corresponding converter 6. The circuit breaker 8 is for electrically disconnecting the generator 5 from the corresponding converter 6.

  With such a configuration, for example, the driving side rotor 3 is rotationally driven by a driving force obtained by wind power, and the rotational driving force of the driving side rotor 3 is transmitted to each power generation side rotor 4 by the magnetic gear 10. When each power generation side rotor 4 rotates, each power generator 5 generates power. The electric power generated by each generator 5 is converted from AC to DC by a corresponding converter 6 and sent to a single inverter 7. The electric power sent to the inverter 7 is converted from direct current to alternating current and sent to the power supply circuit.

  Next, the configuration of the magnetic gear 10 will be described with reference to FIG. Here, since the magnetic gear 10 shown in FIG. 3 has a configuration similar to a mechanical worm gear, it may be called a magnetic worm gear.

  As shown in FIGS. 3 and 4, the magnetic gear 10 includes a plurality of drive-side magnet groups 11 provided on the outer peripheral surface of the drive-side rotor 3 and an outer peripheral surface of the power generation-side rotor 4. 11 and a plurality of power generation side magnet groups 12 that can be magnetically coupled to 11.

  As shown in FIG. 3, the drive-side rotor 3 is connected to the drive source 2 and has a rotatable drive-side rotor shaft 3 a and a wheel-like shape provided at the end of the drive-side rotor shaft 3 a on the generator 5 side. Drive side rotor main body 3b. The outer peripheral surface 3 c of the drive side rotor body 3 b is formed in a concave shape so as to receive a plurality of power generation side rotors 4 arranged along the rotation direction of the drive side rotor 3. Moreover, the cross section of the outer peripheral surface 3c of the drive side rotor main body 3b is formed in circular arc shape.

  The drive-side magnet group 11 is provided on the outer peripheral surface 3c of the drive-side rotor body 3b (the surface on the power generation-side rotor 4 side). That is, as shown in FIG. 4, the drive-side magnet group 11 is attached to the outer peripheral surface 3c of the drive-side rotor body 3b, and the permanent magnet 11a whose surface is magnetized to the south pole and the outer peripheral surface 3c. And a permanent magnet 11b whose surface is magnetized to the north pole. These permanent magnets 11a and 11b are alternately arranged in the rotation direction of the drive side rotor 3 (arrow direction in FIG. 4).

  As shown in FIG. 3, the power generation side rotor 4 is formed in a cylindrical shape, and is arranged with a predetermined gap with respect to the outer peripheral surface 3c of the drive side rotor main body 3b. That is, the power generation side rotor 4 is disposed so as not to contact the drive side rotor 3. Moreover, the power generation side rotor 4 is rotatable about the power generation side rotation shaft. The power generation side rotation shaft is along the rotation direction of the drive side rotor 3, more specifically, the tangential direction. Such a power generation side rotor 4 rotates around the power generation side rotation shaft while being maintained in that position. That is, the power generation side rotor 4 rotates without revolving the outer periphery of the drive side rotor 3. The generator 5 is disposed inside the power generation side rotor 4 and generates power by the rotation of the power generation side rotor 4.

  The power generation side magnet group 12 is provided on the outer peripheral surface 4 a of the power generation side rotor 4. That is, as shown in FIG. 4, the power generation side magnet group 12 is attached to the outer peripheral surface 4a of the power generation side rotor 4 and the permanent magnet 12a whose surface is magnetized to the S pole and the outer peripheral surface 4a. , And a permanent magnet 12b whose surface is magnetized to an N pole. These permanent magnets 12a and 12b are attached so as to interlace with each other in a spiral shape. In addition, since FIG. 4 has expanded and shown the outer peripheral surface 4a of the electric power generation side rotor 4, the permanent magnets 12a and 12b attached helically are shown as the form arrange | positioned alternately. .

  In the magnetic gear 10 having such a configuration, when the drive-side rotor 3 rotates, the drive-side magnet group 11 provided on the outer peripheral surface 3c of the drive-side rotor main body 3b moves in the rotation direction of the drive-side rotor 3. Accordingly, the power generation side rotor 4 is rotated by the magnetic coupling force of the magnetic gear 10. That is, the generator-side rotor 4 rotates by utilizing the property of magnets that magnets with the same polarity repel each other and magnets with different polarity attract each other. Thereby, the rotational driving force of the drive side rotor 3 is transmitted to the power generation side rotor 4. In this case, the rotational driving force is transmitted to the power generation side rotor 4 from the driving side rotor 3 in a non-contact manner. For this reason, the magnetic gear 10 has characteristics superior to the mechanical gear in terms of wear, noise, and vibration.

  Next, the monitoring system 20 of the magnetic gear type power generator in the present embodiment will be described. The monitoring system 20 of the magnetic gear power generator is for monitoring the magnetic gear power generator 1 described above.

  As shown in FIG. 1, the monitoring system 20 of the magnetic gear type power generator includes a drive-side measuring unit 21 that measures the rotation speed of the drive-side rotor 3 and a plurality of power generation units that measure the rotation speed of each of the power-generation-side rotor 4. And a control device 30 connected to the drive side measurement unit 21 and the power generation side measurement unit 22.

  As the drive side measurement unit 21, it is preferable to use a rotation speed pickup sensor. In this case, the rotational speed pickup sensor is provided in the vicinity of the driving side rotor 3, and the driving side rotor shaft 3 a (see FIG. 3) of the driving side rotor 3 has a gear-like shape serving as a measured portion of the rotational speed pickup sensor. Members and the like are provided. This makes it possible to measure the rotational speed of the drive side rotor 3. In addition, it is preferable that the measurement of the rotation speed of the drive side rotor 3 by the drive side measurement part 21 is performed continuously. Thereby, the transition of the change in the rotational speed of the drive-side rotor 3 can be accurately measured.

  As the power generation side measurement unit 22, it is preferable to use the converter 6 described above as an example. That is, each converter 6 measures an electrical state including the frequency of the electric power generated by the corresponding generator 5. Thereby, the rotation speed of the power generation side rotor 4 can be obtained from the measured frequency. In addition, it is preferable that the measurement of the rotation speed of the electric power generation side rotor 4 by the electric power generation side measurement part 22 is performed continuously. As a result, the transition of the change in the rotational speed of each power generation rotor 4 can be accurately measured.

  As shown in FIG. 5, the control device 30 determines whether or not there is an abnormality in the rotational speed of the drive-side rotor 3 based on the rotational speed of the drive-side rotor 3 measured by the drive-side measuring unit 21. Unit 31 and a power generation side abnormality determination unit 32 that determines whether there is an abnormality in the rotational speed of each power generation side rotor 4 based on the number of rotations of the power generation side rotor 4 measured by the plurality of power generation side measurement units 22. doing.

  The drive-side abnormality determination unit 31 determines that the drive-side rotor 3 has a rotation speed abnormality when the measured rate of change in the rotation speed of the drive-side rotor 3 is greater than a predetermined value. . In addition, it is suitable for the drive side abnormality determination part 31 to determine the presence or absence of the rotation speed abnormality of the drive side rotor 3 with a variable period.

  Similar to the drive side abnormality determination unit 31, the power generation side abnormality determination unit 32 rotates the power generation side rotor 4 when the measured rate of change in the rotation speed of each power generation side rotor 4 exceeds a predetermined value. It is determined that there is a numerical abnormality. In addition, the determination of the presence or absence of an abnormality in the rotational speed by the power generation side abnormality determination unit 32 is performed for each power generation side rotor 4. In addition, the power generation side abnormality determination unit 32 obtains an average rotational speed of the power generation side rotor 4 based on the measured rotational speeds of the plurality of power generation side rotors 4, and the rotational speed of each power generation side rotor 4 is determined as the average obtained. When the deviation with respect to the rotational speed becomes larger than a predetermined value, it is determined that the power generation side rotor 4 has a rotational speed abnormality. As with the drive-side abnormality determination unit 31, the power-generation-side abnormality determination unit 32 preferably determines whether there is an abnormality in the rotation speed of the power-generation-side rotor 4 at a predetermined variable period.

  Further, the control device 30 determines whether there is an abnormality in the rotational speed of the drive-side rotor 3 determined by the drive-side abnormality determination unit 31, and whether there is an abnormality in the rotational speed of each power generation-side rotor 4 determined by the power generation-side abnormality determination unit 32. And an abnormal point specifying unit 33 for specifying an abnormal point, and an abnormality notifying unit 34 for notifying the abnormal point specified by the abnormal point specifying unit 33 as an alarm.

  Among these, the abnormality location specifying unit 33 is determined by the drive side abnormality determination unit 31 to have a rotation speed abnormality in the drive side rotor 3, and the power generation side abnormality determination unit 32 has a rotation speed abnormality in the power generation side rotor 4. Is determined, the drive-side rotor 3 is identified as an abnormal location without identifying the power generation-side rotor 4 as an abnormal location.

  In addition, when the power generation side abnormality determination unit 32 determines that the plurality of power generation side rotors 4 adjacent to each other have a rotation speed abnormality, the abnormal part specification unit 33 specifies the drive side rotor 3 as an abnormal part. In this case, the abnormal location specifying unit 33 does not specify the plurality of power generation side rotors 4 as abnormal locations. Further, when the power generation side abnormality determination unit 32 determines that the plurality of power generation side rotors 4 or a single power generation side rotor 4 has a rotation speed abnormality, the abnormal point specifying unit 33 has passed a predetermined time. Later, the abnormal part is specified.

  The abnormality notifying unit 34 notifies the abnormal location specified by the abnormal location specifying unit 33 as described above. Specifically, the abnormality notification unit 34 first determines whether or not to notify the drive-side rotor 3 as an abnormal location based on whether or not the drive-side rotor 3 is specified as an abnormal location by the abnormal location specifying unit 33. Then, based on whether or not the power generation side rotor 4 is specified as an abnormal location by the abnormal location specifying unit 33, it is determined whether or not to notify the power generation side rotor 4 as an abnormal location. ing. In addition, when the abnormal part specifying unit 33 identifies the drive-side rotor 3 as an abnormal part, the abnormality notification part 34 notifies the drive-side rotor 3 as an abnormal part and notifies the power generation-side rotor 4 as an abnormal part. Judgment is omitted. When the abnormal part specifying unit 33 does not specify an abnormal part, that is, when there is no abnormality, the abnormality notifying unit 34 does not notify the abnormal part. Further details of the abnormality notification unit 34 will be described later.

  In addition, the control device 30 has an alarm confirmation input unit 35. The alarm confirmation input unit 35 is used to input that the monitoring person who has confirmed the alarm has confirmed the alarm after the abnormality notification unit 34 has notified the abnormal part as an alarm.

  Further, as shown in FIG. 1, a converter 6, an inverter 7, a breaker 8, and a vibration measuring unit (not shown) are connected to the control device 30. As described above, the converter 6 measures the electrical state such as the frequency of the electric power generated by the corresponding generator 5, but further, when an abnormality such as damage occurs in the converter 6 itself. In addition, the converter abnormality signal is transmitted to the control device 30. The inverter 7 measures an electrical state such as a frequency of power that is converted from direct current to alternating current and is sent to the load-side power supply circuit, and transmits the electrical state of the measured power to the control device 30. To do. The vibration system side part is provided in the drive side rotor 3 and measures the vibration state of the drive side rotor 3. The vibration state of the drive-side rotor 3 measured by the vibration system side is transmitted to the control device 30.

  As shown in FIG. 5, the control device 30 further includes a vibration abnormality determination unit 36 and an inverter abnormality determination unit 37. Among these, the vibration abnormality determination part 36 determines the presence or absence of vibration abnormality of the drive side rotor 3 based on the vibration state of the drive side rotor 3 measured by the vibration system side part mentioned above. The inverter abnormality determination unit 37 determines the presence or absence of power abnormality based on the electrical state such as the frequency of the power sent to the power supply circuit measured by the inverter 7.

  When the vibration abnormality determining unit 36 determines that the drive-side rotor 3 has a vibration abnormality, the abnormal portion specifying unit 33 described above specifies the drive-side rotor 3 as an abnormal portion. In addition, when the inverter abnormality determination unit 37 determines that there is an abnormality in the electrical state of the power sent to the power supply circuit, the abnormal part specifying unit 33 specifies the inverter 7 as an abnormal part. Furthermore, when receiving the converter abnormality signal described above from the converter 6, the abnormal part specifying unit 33 specifies the converter 6 as an abnormal part.

  Next, the operation of the present embodiment having such a configuration, that is, the monitoring method of the magnetic gear type power generator will be described with reference to FIG.

  First, the drive-side measuring unit 21 measures the rotation speed of the drive-side rotor 3, and the power-generation-side measuring unit 22 measures the rotation speed of the power-generating-side rotor 4 (step S11).

  Subsequently, whether or not there is an abnormality in the rotational speed of the drive-side rotor 3 and whether or not there is an abnormality in the rotational speed of the power generation-side rotor 4 are determined (step S21). That is, based on the rotation speed of the drive-side rotor 3 measured in step S11, the drive-side abnormality determination unit 31 determines whether there is an abnormality in the rotation speed of the drive-side rotor 3. Further, based on the rotation speed of the power generation side rotor 4 measured in step S11, the power generation side abnormality determination unit 32 determines whether or not the rotation speed abnormality of the power generation side rotor 4 is present.

  Next, based on the presence / absence of abnormality in the rotational speed of the drive-side rotor 3 and the presence / absence of abnormality in the rotational speed of each power generation-side rotor 4, the abnormal part specifying unit 33 identifies the abnormal part (step S31).

  In this case, as shown in FIG. 7, the abnormal part is specified based on the presence or absence of the rotational speed abnormality of the drive side rotor 3 determined in step S21. Here, when there is an abnormality in the rotational speed of the drive-side rotor 3, the drive-side rotor 3 is identified as an abnormal location (step S31a).

  Moreover, an abnormal location is specified based on the presence or absence of the rotational speed abnormality of the electric power generation side rotor 4 judged in step S21.

  In this case, first, it is determined whether or not there is a rotational speed abnormality in the drive-side rotor 3 (step S31b). Here, when it is determined that there is an abnormality in the rotational speed of the drive-side rotor 3, the drive-side rotor 3 is identified as an abnormal location (step S31a). That is, when the rotational speed abnormality is present in the driving side rotor 3, the driving side rotor 3 is identified as an abnormal location regardless of the presence or absence of the rotational speed abnormality of the power generation side rotor 4. At this time, the power generation side rotor 4 is not specified as an abnormal location.

  If it is determined in step S31b that there is no abnormality in the rotational speed of the drive-side rotor 3, it is determined whether or not there is a rotational speed abnormality in the plurality of power generation-side rotors 4 adjacent to each other (step S31c). Here, when it is determined that there is a rotation speed abnormality in the plurality of power generation side rotors 4 adjacent to each other, the drive side rotor 3 is specified as an abnormal part (step S31a).

  It is preferable that the abnormal location in step S31c is specified after a predetermined time has elapsed since the power generation side abnormality determination unit 32 determines that the rotational speed of the power generation side rotor 4 is abnormal. That is, when a magnetic defect or the like occurs in the drive side magnet group 11 (see FIG. 4), the magnetic coupling force of the magnetic gear 10 is reduced. As a result, as shown in FIG. 8, the power generation side rotor 4 (herein referred to as the first power generation side rotor 4b for the sake of convenience) adjacent to the magnetic defect site 40 where the magnetic defect or the like has occurred is magnetically coupled. As a result, the phenomenon of sliding with respect to the drive-side rotor 3 occurs. Thereby, the rotational driving force of the drive side rotor 3 is not sufficiently transmitted to the first power generation side rotor 4b, and the rotation speed of the first power generation side rotor 4b decreases. Thereafter, with the rotation of the drive side rotor 3, the magnetic force defect portion 40 moves to the rotation direction side of the drive side rotor 3. The magnetic force defect portion 40 is closer to the second power generation side rotor 4c disposed adjacent to the first power generation side rotor 4b in the rotational direction of the drive side rotor 3 than the first power generation side rotor 4b. Also in the side rotor 4c, the number of rotations is reduced in the same manner as the first power generation side rotor 4b described above. As a result, when there is an abnormality in the rotation speed of at least one power generation side rotor 4, there is a possibility that the rotation speed abnormality occurs in the adjacent power generation side rotor 4 after a predetermined time has elapsed. For this reason, the abnormal location in step S31c can be appropriately specified by performing the determination after a predetermined time has elapsed since it is determined that the power generation-side rotor 4 has a rotational speed abnormality. In addition, as the predetermined time referred to here, the magnetic force defect portion 40 is transferred from one power generation side rotor 4 to another power generation side rotor 4 adjacent to the one power generation side rotor 4 on the rotational direction side of the drive side rotor 3. It may be a time that is equal to or longer than the time to move (in the example of FIG. 8, the time to move from the first power generation side rotor 4b to the second power generation side rotor 4c).

  If it is determined in step S31c that the plurality of power generation side rotors 4 adjacent to each other has an abnormality in the rotational speed, the drive side rotor 3 is identified as an abnormal part (step S31a). At this time, the plurality of power generation side rotors 4 are not specified as abnormal portions. On the other hand, when it is determined in step S31c that the plurality of power generation side rotors 4 adjacent to each other has no rotational speed abnormality, the power generation side rotor 4 is identified as an abnormal part (step S31d). In this case, a plurality of power generation side rotors 4 or a single power generation side rotor 4 that are not adjacent to each other are identified as abnormal locations.

  Although not shown in FIG. 7, the abnormal part specifying unit 33 abnormalizes the inverter 7 when the inverter abnormality determination unit 37 determines that there is an abnormality in the electrical state of the power sent to the power supply circuit. Specify as a location. In addition, when the vibration abnormality determination unit 36 determines that the drive-side rotor 3 has a vibration abnormality, the abnormality location specifying unit 33 specifies the drive-side rotor 3 as an abnormal location. Furthermore, when the abnormal part specifying unit 33 receives a converter abnormal signal from the converter 6, the abnormal part specifying unit 33 specifies the converter 6 as an abnormal part.

  After the abnormal part is specified in step S31, as shown in FIG. 6, the specified abnormal part is notified as an alarm.

  In this case, first, based on whether or not the inverter 7 is specified as an abnormal location, the abnormality notification unit 34 determines whether or not to notify the inverter 7 as an abnormal location (step S41). Here, when the inverter 7 is specified as an abnormal location, the abnormality notification unit 34 notifies the alarm that the inverter 7 is an abnormal location (step S51). Since the inverter 7 converts the DC power converted by the converter 6 into AC, the load-side power supply circuit determines whether there is an abnormality in the power measured by the inverter 7 as described above. It is possible to eliminate the abnormality that has occurred, and it is possible to appropriately identify the abnormality part.

  After the alarm is issued in step S51, the abnormality notifying unit 34 does not determine the notification of the abnormal part in the following steps S42 to S44. That is, steps S42 to S44 are omitted. After the alarm has been issued, the monitor confirming the alarm inputs to the alarm confirmation input unit 35 that the alarm has been confirmed (step S61).

  If the inverter 7 is not specified as an abnormal location, whether or not the drive side rotor 3 is notified as an abnormal location is determined by the abnormality notification unit 34 based on whether or not the drive rotor 3 is specified as an abnormal location. Judgment is made (step S42). Here, when the drive side rotor 3 is specified as an abnormal location, the abnormality notification unit 34 notifies the alarm that the drive side rotor 3 is an abnormal location (step S52). Note that the alarm that the drive-side rotor 3 is in an abnormal location includes not only the alarm caused by the rotation speed abnormality of the drive-side rotor 3 but also the alarm caused by the vibration abnormality of the drive-side rotor 3. . By notifying the alarm of the drive-side rotor 3 caused by the vibration abnormality among these, the abnormality caused by the vibration of the drive-side rotor 3 can be eliminated, and the abnormal part can be specified appropriately. . In this case, the abnormality notifying unit 34 does not determine whether to notify the abnormal part in the following steps S43 and S44. That is, the following steps S43 and S44 are omitted. Thereafter, the monitor who has confirmed the alarm inputs to the alarm confirmation input section 35 that the alarm has been confirmed (step S61).

  If the drive-side rotor 3 is not specified as an abnormal location, the abnormality notification unit 34 determines whether to notify the converter 6 as an abnormal location based on whether or not the converter 6 is specified as an abnormal location. (Step S43). When it is specified that the converter 6 is an abnormal location, the abnormality notification unit 34 notifies that the converter 6 is an abnormal location as an alarm (step S53). In this case, an abnormality caused by damage to the converter 6 itself can be eliminated, and the abnormal part can be appropriately identified. In this case, the following step S44 is omitted. Thereafter, the monitor who has confirmed the alarm inputs to the alarm confirmation input section 35 that the alarm has been confirmed (step S61).

  If the converter 6 is not identified as an abnormal location, whether or not the power generation side rotor 4 is notified as an abnormal location is determined by the abnormality notification unit 34 based on whether or not the power generation rotor 4 is identified as an abnormal location. Determination is made (step S44). When it is specified that the power generation side rotor 4 is an abnormal location, the abnormality notification unit 34 notifies the alarm that the power generation side rotor 4 is an abnormal location (step S54). In addition, when the some power generation side rotor 4 which is not adjacent to each other is specified as an abnormal location, it is notified as an alarm that these power generation side rotors 4 are an abnormal location. Thereafter, the monitor who has confirmed the alarm inputs to the alarm confirmation input section 35 that the alarm has been confirmed (step S61).

  When the power generation side rotor 4 is not specified as an abnormal location, that is, when an abnormal location is not specified by the abnormal location specifying unit 33, the process returns to step S21 and the above-described processing is repeated.

  Moreover, if the warning confirmation input of step S61 is performed, it will return to step S21 and the process mentioned above will be repeated.

  As described above, according to the present embodiment, when there is a rotation speed abnormality in the plurality of power generation side rotors 4 adjacent to each other, the drive side rotor 3 is identified as an abnormal location, and the drive side rotor 3 is an abnormal location. Is reported as an alarm. In this case, as described above, it can be appropriately notified as an alarm that the rotation speed abnormality of the plurality of power generation side rotors 4 adjacent to each other is an abnormality occurring in the drive side rotor 3. For this reason, when an abnormality occurs, an abnormal location can be notified promptly and appropriately, and a recovery process can be quickly performed from the abnormality. Further, in this case, the plurality of power generation side rotors 4 in which the rotational speed abnormality has occurred are not identified as abnormal portions. Thereby, it is possible to prevent the power generation side rotor 4 from being reported as an abnormal location, and to report the abnormal location more appropriately.

  In addition, according to the present embodiment, when the drive-side rotor 3 has a rotational speed abnormality and the power generation-side rotor 4 has a rotational speed abnormality, the power-generation-side rotor 4 is not identified as an abnormal location, The rotor 3 is identified as an abnormal location, and a warning is given that the drive-side rotor 3 is an abnormal location. Even in this case, it is possible to appropriately notify as an alarm that the abnormality in the rotational speed simultaneously occurring in the drive side rotor 3 and the power generation side rotor 4 is an abnormality occurring in the drive side rotor 3. For this reason, it is possible to prevent the power generation side rotor 4 from being notified as an abnormal location, to notify the abnormal location quickly and appropriately when an abnormality occurs, and to perform a recovery process quickly from the abnormality.

  Further, according to the present embodiment, when the abnormal part specifying unit 33 specifies the drive side rotor 3 as an abnormal part, the abnormality notification part 34 notifies the drive side rotor 3 as an abnormal part, and the power generation side rotor 4 is detected. The determination as to whether or not to report as an abnormal location is omitted. As a result, the fact that the drive-side rotor 3 is in an abnormal location can be quickly notified as an alarm.

  Further, according to the present embodiment, the drive-side abnormality determination unit 31 determines whether there is an abnormality in the rotational speed of the drive-side rotor 3 at a predetermined variable period. As a result, chattering or the like that may occur at the start of rotation of the drive-side rotor 3 can be prevented from affecting the determination of whether or not the drive-side rotor 3 has a rotational speed abnormality. For this reason, the presence or absence of an abnormality in the rotational speed of the drive-side rotor 3 can be determined with high accuracy, and the abnormal part can be more appropriately notified.

  Furthermore, according to the present embodiment, the power generation side abnormality determination unit 32 determines whether or not there is an abnormality in the rotational speed of the power generation side rotor 4 at a predetermined variable period. Thus, chattering or the like that may occur at the start of rotation of the drive-side rotor 3 can be prevented from affecting the determination of whether or not the power generation-side rotor 4 has an abnormal rotation speed. For this reason, the presence or absence of an abnormality in the rotational speed of the power generation side rotor 4 can be determined with high accuracy, and the abnormal part can be notified more appropriately.

  In the above-described embodiment, an example in which a plurality of power generation side rotors 4 are magnetically coupled to the drive side rotor 3 by the magnetic gear 10 has been described. However, the present invention is not limited to this, and a single power generation side rotor 4 may be magnetically coupled to the drive side rotor 3 by the magnetic gear 10. Even in this case, the abnormal part can be appropriately determined, and the abnormal part can be notified promptly and appropriately when the abnormality occurs.

  Moreover, in this Embodiment mentioned above, the magnetic gear 10 which transmits the rotational driving force of the drive side rotor 3 to the electric power generation side rotor 4 demonstrated the example which is what is called a magnetic worm gear as shown in FIG. However, the present invention is not limited to this, and a magnetic gear having an arbitrary configuration can be used as long as the rotational driving force of the driving side rotor 3 can be transmitted to the power generation side rotor 4.

  As described above, the embodiment of the present invention has been described in detail. However, the monitoring system and the monitoring method of the magnetic gear type power generator according to the present invention are not limited to the above embodiment, and the gist of the present invention is not limited. Various modifications can be made without departing from the scope.

DESCRIPTION OF SYMBOLS 1 Magnetic gear type generator 2 Drive source 3 Drive side rotor 4 Generator side rotor 5 Generator 6 Converter 7 Inverter 8 Breaker 10 Magnetic gear 20 Monitoring system of magnetic gear type generator 21 Drive side measurement part 22 Power generation side measurement part 30 Control device 31 Drive-side abnormality determination unit 32 Power generation-side abnormality determination unit 33 Abnormal point identification unit 34 Abnormality notification unit

Claims (11)

A drive-side rotor coupled to a drive source; a plurality of power-generation-side rotors that are magnetically coupled to the drive-side rotor by a magnetic gear and arranged along a rotation direction of the drive-side rotor; and In a monitoring system for a magnetic gear power generator that monitors a magnetic gear power generator having a plurality of connected generators,
A plurality of power generation side measurement units that measure the number of rotations of each of the power generation side rotors;
A power generation side abnormality determination unit that determines the presence or absence of a rotation speed abnormality of each of the power generation side rotor based on the number of rotations of the power generation side rotor measured by a plurality of the power generation side measurement units;
Based on the presence / absence of rotation speed abnormality of each of the power generation side rotors determined by the power generation side abnormality determination unit, an abnormal point specifying unit for specifying an abnormal point;
An abnormality notifying unit for notifying the abnormal location specified by the abnormal location specifying unit,
The abnormal part specifying unit specifies the drive side rotor as an abnormal part when it is determined by the power generation side abnormality determining part that a plurality of power generation side rotors adjacent to each other have a rotation speed abnormality. A monitoring system for magnetic gear generators.   The abnormality location specifying unit does not specify the plurality of power generation side rotors as abnormal locations when the power generation side abnormality determination unit determines that there are rotation speed abnormalities in the plurality of power generation side rotors adjacent to each other. The monitoring system for a magnetic gear type power generator according to claim 1.   When the power generation side abnormality determining unit determines that the plurality of power generation side rotors that are not adjacent to each other or the single power generation side rotor has a rotational speed abnormality, the abnormality location specifying unit is abnormal after a predetermined time has elapsed. 3. The monitoring system for a magnetic gear type power generator according to claim 1 or 2, wherein a location is specified.   The abnormality notification unit first determines whether or not to notify the drive side rotor as an abnormal location based on whether or not the drive side rotor is specified as an abnormal location by the abnormal location specifying unit, and then And determining whether or not to notify the power generation side rotor as an abnormal location based on whether or not the power generation side rotor is specified as an abnormal location by the abnormal location specifying section, and specifying the abnormal location When the drive-side rotor is specified as an abnormal location by a section, the drive-side rotor is notified as an abnormal location, and the determination of whether to notify the power generation-side rotor as an abnormal location is omitted. Item 4. A monitoring system for a magnetic gear type power generator according to any one of Items 1 to 3.   5. The magnetic gear power generation device according to claim 1, wherein the power generation side abnormality determination unit determines whether or not there is a rotation speed abnormality of the power generation side rotor at a variable predetermined cycle. Monitoring system. A drive-side measuring unit that measures the rotational speed of the drive-side rotor;
A drive-side abnormality determination unit that determines whether or not the drive-side rotor has a rotation speed abnormality based on the rotation number of the drive-side rotor measured by the drive-side measurement unit;
The abnormality location specifying unit includes the presence or absence of an abnormality in the rotational speed of the driving rotor determined by the driving side abnormality determination unit, and the presence or absence of an abnormality in the rotational speed of the power generation side rotor determined by the power generation side abnormality determination unit. Based on, identify the abnormal location,
The abnormal portion specifying unit is determined by the drive side abnormality determination unit to determine that the drive side rotor has a rotational speed abnormality, and the power generation side abnormality determination unit is determined to have a rotational speed abnormality in the power generation side rotor. 6. The monitoring system for a magnetic gear generator according to claim 1, wherein the drive-side rotor is identified as an abnormal location without identifying the power-generation-side rotor as an abnormal location. .   The monitoring system for a magnetic gear type power generator according to claim 6, wherein the drive-side abnormality determination unit determines whether or not the drive-side rotor has a rotation speed abnormality at a predetermined variable period. A magnetic gear type power generation device having a drive side rotor connected to a drive source, a power generation side rotor magnetically coupled to the drive side rotor by a magnetic gear, and a generator connected to the power generation side rotor is monitored. In the monitoring system of the magnetic gear type power generator,
A drive-side measuring unit that measures the rotational speed of the drive-side rotor;
A power generation side measurement unit for measuring the number of rotations of the power generation side rotor;
A drive-side abnormality determination unit that determines whether or not there is an abnormality in the rotation number of the drive-side rotor based on the rotation number of the drive-side rotor measured by the drive-side measurement unit;
Based on the rotational speed of the power generation side rotor measured by the power generation side measurement section, a power generation side abnormality determination section that determines the presence or absence of a rotational speed abnormality of the power generation side rotor;
Based on the presence / absence of an abnormality in the rotational speed of the drive-side rotor determined by the drive-side abnormality determination unit and the presence / absence of an abnormality in the rotational speed of the power generation-side rotor determined by the power generation-side abnormality determination unit An abnormal part identifying part for identifying
An abnormality notifying unit for notifying the abnormal location specified by the abnormal location specifying unit,
The abnormal portion specifying unit is determined by the drive side abnormality determination unit to determine that the drive side rotor has a rotational speed abnormality, and the power generation side abnormality determination unit is determined to have a rotational speed abnormality in the power generation side rotor. In this case, the drive system rotor is identified as an abnormal location without identifying the power generation-side rotor as an abnormal location.   The abnormality notification unit first determines whether or not to notify the drive side rotor as an abnormal location based on whether or not the drive side rotor is specified as an abnormal location by the abnormal location specifying unit, and then And determining whether or not to notify the power generation side rotor as an abnormal location based on whether or not the power generation side rotor is specified as an abnormal location by the abnormal location specifying section, and specifying the abnormal location When the drive-side rotor is specified as an abnormal location by a section, the drive-side rotor is notified as an abnormal location, and the determination of whether to notify the power generation-side rotor as an abnormal location is omitted. Item 9. The monitoring system for the magnetic gear type power generator according to Item 8. A drive-side rotor coupled to a drive source; a plurality of power-generation-side rotors that are magnetically coupled to the drive-side rotor by a magnetic gear and arranged along a rotation direction of the drive-side rotor; and In a monitoring method of a magnetic gear type power generation device for monitoring a magnetic gear type power generation device having a plurality of connected generators,
Measuring the rotational speed of each of the power generation side rotors;
Determining whether there is an abnormality in the rotational speed of each of the power generation side rotors based on the rotational speed of each of the power generation side rotors;
Identifying an abnormal location based on the presence or absence of an abnormality in the rotational speed of each of the power generation side rotors;
A step of notifying the identified abnormal location,
When it is determined that a plurality of power generation side rotors adjacent to each other have a rotational speed abnormality, the drive side rotor is identified as an abnormal location in the step of identifying the abnormal location, the magnetic gear power generation device Monitoring method. A magnetic gear type power generation device having a drive side rotor connected to a drive source, a power generation side rotor magnetically coupled to the drive side rotor by a magnetic gear, and a generator connected to the power generation side rotor is monitored. In the monitoring method of the magnetic gear type power generator,
Measuring the rotational speed of the drive-side rotor;
Measuring the rotational speed of the power generation side rotor;
Determining whether there is an abnormality in the rotational speed of the drive-side rotor based on the rotational speed of the drive-side rotor;
Determining whether there is an abnormality in the rotational speed of the power generation side rotor based on the rotational speed of the power generation side rotor;
Identifying an abnormal location based on the presence or absence of an abnormality in the rotational speed of the drive-side rotor and the presence or absence of an abnormality in the rotational speed of the power generation-side rotor;
A step of notifying the identified abnormal location,
When it is determined that the drive-side rotor has a rotational speed abnormality and it is determined that the power generation-side rotor has a rotational speed abnormality, the power generation-side rotor is identified as an abnormal position in the step of identifying the abnormal position. The method of monitoring a magnetic gear type power generator, wherein the drive-side rotor is specified as an abnormal location without any problem.

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