A marine generator set reactive power testing device, method and computer program product

Abstract

The application discloses a kind of ship generator set reactive power testing device, method and computer program product, wherein the device includes: at least two adjustable reactors and control unit;The control unit includes at least two switch units and busbar;The adjustable reactor is connected in parallel by one the switch unit and accesses the busbar;The control end of the control unit is connected to each the adjustable reactor;The control unit is used to control the on-off state of the switch unit, and the reactive power regulation of the adjustable reactor and the adjustable reactor in ship generator power test.The technical scheme provided by the embodiment of the application can avoid the problem of repeated wiring under different test power, adapt to the test requirements of multiple power changes, and improve the test efficiency.

Description

Technical Field

[0001] This invention relates to the field of generator testing technology, and in particular to a reactive power testing device, method, and computer program product for ship generator sets. Background Technology

[0002] For ship power systems, changes in the reactive power distribution of generator sets are of great significance. Therefore, in the production of generator sets, it is necessary to test the reactive power distribution of the generator under the power factor test according to the specifications.

[0003] In existing technologies, generator testing devices use water resistance boxes for testing. However, the power factor achieved using water resistance boxes is only 1, which cannot provide effective reactive power regulation and does not meet the requirements of classification societies. Existing technologies can also use reactors to regulate reactive power, but existing reactor testing structures cannot flexibly adapt to testing requirements with varying power levels, thus affecting testing efficiency and reducing test compatibility. Summary of the Invention

[0004] This invention provides a reactive power testing device, method, and computer program for ship generator sets, which avoids repeated wiring under different test power conditions, adapts to test requirements with varying power levels, and improves test efficiency.

[0005] In a first aspect, embodiments of the present invention provide a reactive power testing device for a ship generator set, comprising: at least two adjustable reactors and a control unit; the control unit includes at least two switching units and a busbar;

[0006] Each of the adjustable reactors is connected in parallel to the busbar via a switching unit;

[0007] The control terminal of the control unit is connected to each of the adjustable reactors respectively; the control unit is used to control the on / off state of the switching unit, and to control the reactive power adjustment of the adjustable reactors during the ship generator power test.

[0008] Optionally, the maximum adjustable rated capacity of the adjustable reactor may vary.

[0009] Optionally, the reactive power testing device for the ship generator set includes two adjustable reactors, wherein one of the adjustable reactors is an 800KVAR reactor and the other is a 2000KVAR reactor.

[0010] Optionally, the ship generator set reactive power testing device further includes a steel structure housing, which is used for the fixed installation of the adjustable reactor and the control unit.

[0011] Optionally, the switching unit is an air switch.

[0012] Optionally, the ship generator set reactive power testing device further includes a remote control unit; the remote control unit is communicatively connected to the control unit; the remote control unit is used to remotely control the control functions of the control unit.

[0013] Secondly, embodiments of the present invention provide a method for testing the reactive power of a ship generator set, which is executed by a ship generator set reactive power testing device. The ship generator set reactive power testing device includes: at least two adjustable reactors and a control unit; the control unit includes at least two switching units and a busbar.

[0014] The method includes:

[0015] To increase the active power of the generator set to a preset test point, the control unit activates a switch unit connected to the adjustable reactor and increases the rated capacity of the adjustable reactor to increase the reactive power of the generator set, so that the power factor of the generator set reaches a preset value.

[0016] If the rated capacity of the adjustable reactor has reached its maximum value, but the power factor of the generator set still has not reached the preset value, the control unit activates the switching unit connected to another adjustable reactor and increases the rated capacity of the adjustable reactor to improve the reactive power of the generator set until the power factor of the generator set reaches the preset value; if the power factor of the generator set still has not reached the preset value, the rated capacity of the remaining adjustable reactors is adjusted sequentially until the power factor of the generator set reaches the preset value.

[0017] Record the reactive power of the generator set at the preset test point.

[0018] Optionally, before increasing the active power of the generator set to the test point, the process includes adjusting the rated capacity of each of the adjustable reactors to the lowest setting.

[0019] Optionally, after increasing the active power of the generator set to the target preset test point and recording the reactive power of the generator set at the preset test point, the method further includes:

[0020] Reduce the active power of the generator set to the preset test point, reduce the rated capacity of the adjustable reactor to reduce the reactive power of the generator set, and make the power factor of the generator set reach the preset value;

[0021] If the rated capacity of the adjustable reactor has been adjusted to the lowest level and the power factor of the generator set has not yet reached the preset value, then the control unit disconnects the switching unit connected to the adjustable reactor.

[0022] And reduce the rated capacity of another of the adjustable reactors to reduce the reactive power of the generator set until the power factor of the generator set reaches the preset value;

[0023] Record the reactive power of the generator set at the test point.

[0024] Secondly, embodiments of the present invention provide a computer program product, the computer program product including a computer program, which, when executed by a processor, implements the reactive power testing method for ship generator sets described in any of the embodiments of the present invention.

[0025] The technical solution provided by this invention connects multiple adjustable reactors in parallel to a busbar via a switching unit. This allows for the sequential connection of the adjustable reactors with varying rated capacities under different test power conditions until the required power factor is met. The parallel operation of the adjustable reactors simplifies the wiring and control process, avoids repeated wiring under different test power conditions, adapts to test requirements with varying power levels, and improves test efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a ship generator set reactive power testing device provided in an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the structure of another reactive power testing device for ship generator sets, provided for an embodiment of the present invention.

[0028] Figure 3 This is a flowchart illustrating a method for testing the reactive power of a ship generator set, as provided in an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Figure 1 This invention provides a schematic diagram of a reactive power testing device for a ship generator set, as shown in the embodiment of the invention. Figure 1It includes: at least two adjustable reactors 110 and a control unit 120; the control unit includes at least two switching units 121 and a bus 122;

[0031] The adjustable reactors 110 are all connected in parallel to the busbar through a switching unit 121;

[0032] The control terminal of the control unit 120 is connected to each adjustable reactor 110. The control unit 120 is used to control the on / off state of the switch unit 121, and to control the reactive power adjustment of the adjustable reactor 110 and the adjustable reactor 110 during the ship generator power test.

[0033] Specifically, the adjustable reactor 110 refers to a reactor with an adjustable rated capacity. Multiple adjustable reactors 110 can be configured in the testing device. Each adjustable reactor 110 is connected to the busbar 122 of the control unit 120 via a switching unit 121, facilitating parallel operation of multiple adjustable reactors 110. The control terminal of the control unit 120 is connected to each adjustable reactor 110, and the control unit 120 can individually control the increase or decrease of the rated capacity of the adjustable reactor 110, thus achieving an adjustment function. For example, the control unit 120 can be integrated into a control cabinet, which may include a human-machine interface module. Users can send control commands from the control unit 120 through the human-machine interface module to control and adjust the adjustable reactor 110. The human-machine interface module may be, for example, a button, knob, or touchscreen.

[0034] The testing process of the testing device is as follows: Before the test, a load cable with sufficient capacity is used to connect the busbar in the water resistance control box to the busbar 122 in the control unit 120 to increase the active power of the generator set to the preset test point. For example, the preset test point can be set to 25% of the rated active power, 50% of the rated active power, 75% of the rated active power, and 100% of the rated active power, etc. It should be noted that the percentage setting is only for illustration and is not specifically limited.

[0035] To increase the generator set's active power to 25% of its rated active power, control unit 120 controls the switching unit 121 connected to an adjustable reactor 110 to conduct. Prioritize conducting adjustable reactors with smaller rated capacities (i.e., using a smaller range) to avoid connecting adjustable reactors with larger rated capacities, which would require only minor adjustments to achieve the target power factor and thus affect measurement accuracy. By increasing the rated capacity of the current adjustable reactor 110 to increase the generator set's reactive power, the generator set's power factor reaches a preset value. For example, according to the classification society's specifications for the power factor during generator testing, the preset value can be set to 0.8. Continue increasing the generator set's active power to 50% of its rated active power, increasing the rated capacity of the adjustable reactor 110, thereby increasing the generator set's reactive power until the power factor is adjusted to the preset value; increase the generator set's active power to 75% of its rated active power, continue increasing the rated capacity of the adjustable reactor 110, thereby increasing the generator set's reactive power until the power factor is adjusted to the preset value; if, during the adjustment process, the rated capacity of the adjustable reactor 110 has reached its highest level, but the generator set's power factor still has not reached the preset value, then the control unit 120 activates the switch unit 121 connected to another adjustable reactor 110, connecting the adjustable reactor 110 in parallel, and continuing to add new reactors. The rated capacity of the adjustable reactor 110 is increased to improve the reactive power of the generator set until the power factor of the generator set reaches the preset value. If the rated capacity of the adjustable reactor 110 has reached its maximum and the power factor of the generator set has not yet reached the preset value, the remaining adjustable reactors 110 are added for adjustment, and so on, until the power factor is adjusted to the preset value. The active power of the generator set can be increased to 100% of the rated active power, and the rated capacity of the adjustable reactor 110 can be increased to increase the reactive power of the generator set until the power factor is adjusted to the preset value. Thus, the reactive power corresponding to the same power factor can be measured under different active power conditions.

[0036] The technical solution provided by this invention connects multiple adjustable reactors in parallel to a busbar via a switching unit. This allows for the sequential connection of the adjustable reactors with varying rated capacities under different test power conditions until the required power factor is met. The parallel operation of the adjustable reactors simplifies the wiring and control process, avoids repeated wiring under different test power conditions, adapts to test requirements with varying power levels, and improves test efficiency.

[0037] Optionally, the maximum adjustable rated capacity of the adjustable reactor 110 can vary. Specifically, by configuring various combinations of rated capacities, a larger capacity adjustable reactor 110 can be used to meet testing requirements when the generator / station power is high, while a smaller capacity adjustable reactor 110 can be used to meet testing requirements when the generator / station power is low. For illustrative purposes, this is an example. Figure 2A schematic diagram of another reactive power testing device for a ship generator set is provided as an embodiment of the present invention. See [link to diagram]. Figure 2 It includes two adjustable reactors 110, one of which is an 800KVAR reactor 1; the other is a 2000KVAR reactor 2.

[0038] The testing process of the testing device is as follows: Before the test, a load cable of sufficient capacity is used to connect the busbar 122 in the water resistance control box to the busbar 122 in the control unit 120, increasing the active power of the generator set to a preset test point. For example, the preset test point can be set to 25% of rated active power, 50% of rated active power, 75% of rated active power, and 100% of rated active power, etc. It should be noted that the percentage setting is only for illustrative purposes and is not specifically limited. The rated capacity of the 800KVAR reactor 1 and the 2000KVAR reactor are adjusted to the lowest position, increasing the active power of the generator set to 25% of the rated active power. The control unit 120 controls the switching unit S2 of the 800KVAR reactor 1 to conduct, thereby increasing the reactive power of the generator set by increasing the rated capacity of the 800KVAR reactor 1, so that the power factor of the generator set reaches a preset value. For example, according to the classification society's specifications for the power factor during generator testing, the preset value can be set to 0.8. Continue increasing the generator set's active power to 50% of its rated active power, and increase the rated capacity of 800KVAR reactor 1 to increase the generator set's reactive power until the power factor is adjusted to the preset value; increase the generator set's active power to 75% of its rated active power, and continue increasing the rated capacity of 800KVAR reactor 1 to increase the generator set's reactive power until the power factor is adjusted to the preset value; if the rated capacity of 800KVAR reactor 1 has reached its maximum during the adjustment process, and the generator set's power factor still has not reached the preset value; If the value is set, the control unit 120 will turn on the switch unit S1 connecting the 2000KVAR reactor 2, connect the 2000KVAR reactor 2 in parallel, continue to increase the rated capacity of the 2000KVAR reactor 2 to increase the reactive power of the generator set until the power factor of the generator set reaches the preset value; increase the active power of the generator set to 100% of the rated active power, continue to increase the rated capacity of the 2000KVAR reactor 2, so that the reactive power of the generator set increases until the power factor is adjusted to the preset value.

[0039] The active power reduction process can also complete the corresponding reactive power test. For example, after the active power of the generator set increases from 100% to 75%, the rated capacity of the 2000KVAR reactor 2 is reduced to reduce the reactive power of the generator set until the power factor of the generator set reaches the preset value. If the rated capacity of the 2000KVAR reactor 2 is increased to the minimum, the control unit 120 controls the switch unit S1 of the 2000KVAR reactor 2 to be cut off, and adjusts the 800KVAR reactor 1 until the power factor is adjusted to the preset value.

[0040] When the active power of the generator set drops to 50%, the rated capacity of 800KVAR reactor 1 is reduced to decrease the reactive power of the generator set until the power factor of the generator set reaches the preset value. When the active power of the generator set drops to 25%, the rated capacity of 800KVAR reactor 1 is reduced to decrease the reactive power of the generator set until the power factor of the generator set reaches the preset value. This allows for the measurement of the reactive power corresponding to the same power factor under different active power conditions.

[0041] See Figure 1 and Figure 2 The reactive power testing device for marine generator sets also includes a steel structure housing 130, which is used for the fixed installation of the adjustable reactor 110 and the control unit 120. The steel structure housing 130 protects the internal reactive power testing device and facilitates hoisting and movement, adapting to the testing environment of marine generator sets.

[0042] Optionally, the switching unit 121 is an air circuit breaker. The air circuit breaker will automatically disconnect if the current in the circuit exceeds the rated current, thereby protecting the electrical equipment. Optionally, the reactive power testing device for the marine generator set also includes a remote control unit; the remote control unit is communicatively connected to the control unit 120; the remote control unit is used to remotely control the control functions of the control unit 120. The communication connection between the remote control unit and the control unit 120 can be wireless communication methods such as Wi-Fi and Bluetooth, or wired communication methods such as CAN and RS-485; by remotely sending control commands through the remote control unit, the control unit 120 controls the increase or decrease of the switching unit 121 and the adjustable reactor 110 according to the control commands, improving the operator's control flexibility.

[0043] Figure 3 This is a flowchart illustrating a method for testing the reactive power of a ship generator set according to an embodiment of the present invention. (See attached diagram.) Figure 3 This method can be performed by a reactive power testing device for a ship's generator set, which can be implemented in hardware and / or software. The method specifically includes the following steps:

[0044] S110. Increase the active power of the generator set to the preset test point. The control unit 120 turns on the switch unit 121 connected to an adjustable reactor 110 and increases the rated capacity of the current adjustable reactor 110 to increase the reactive power of the generator set, so that the power factor of the generator set reaches the preset value.

[0045] If the rated capacity of the adjustable reactor 110 has reached its maximum and the power factor of the generator set has not yet reached the preset value, the control unit 120 will activate the switch unit 121 connected to another adjustable reactor 110 and increase the rated capacity of the adjustable reactor 110 to improve the reactive power of the generator set until the power factor of the generator set reaches the preset value; if the power factor of the generator set still has not reached the preset value, the rated capacity of the remaining adjustable reactors 110 will be adjusted in sequence until the power factor of the generator set reaches the preset value.

[0046] Specifically, before conducting the test, a load cable of sufficient capacity is used to connect the busbar 122 in the water resistance control box to the busbar 122 in the control unit 120 to increase the active power of the generator set to the preset test point. For example, the preset test point can be set to 25% of the rated active power, 50% of the rated active power, 75% of the rated active power, and 100% of the rated active power, etc. It should be noted that the percentage setting is only for illustration and is not specifically limited.

[0047] To increase the generator set's active power to 25% of its rated active power, control unit 120 controls the switching unit 121 connected to an adjustable reactor 110 to conduct. Prioritize conducting adjustable reactors with smaller rated capacities (i.e., using a smaller range) to avoid connecting adjustable reactors with larger rated capacities, as these would achieve the target power factor with smaller adjustment ranges, thus affecting measurement accuracy. By increasing the rated capacity of the current adjustable reactor 110, the reactive power of the generator set is increased, bringing the generator set's power factor to a preset value. For example, according to the classification society's specifications for the power factor during generator testing, the preset value can be set to 0.8. Continue increasing the generator set's active power to 50% of its rated active power, increasing the rated capacity of the adjustable reactor 110, thereby increasing the generator set's reactive power until the power factor is adjusted to the preset value; increase the generator set's active power to 75% of its rated active power, continue increasing the rated capacity of the adjustable reactor 110, thereby increasing the generator set's reactive power until the power factor is adjusted to the preset value; if, during the adjustment process, the rated capacity of the adjustable reactor 110 has reached its highest level, but the generator set's power factor still has not reached the preset value, then the control unit 120 activates the switch unit 121 connected to another adjustable reactor 110, connecting the adjustable reactor 110 in parallel, and continuing to add new reactors. The rated capacity of the adjustable reactor 110 is increased to improve the reactive power of the generator set until the power factor of the generator set reaches the preset value. If the rated capacity of the adjustable reactor 110 has reached its maximum and the power factor of the generator set has not yet reached the preset value, the remaining adjustable reactors 110 are added for adjustment, and so on, until the power factor is adjusted to the preset value. The active power of the generator set can be increased to 100% of the rated active power, and the rated capacity of the adjustable reactor 110 can be increased to increase the reactive power of the generator set until the power factor is adjusted to the preset value. Thus, the reactive power corresponding to the same power factor can be measured under different active power conditions.

[0048] S120. Record the reactive power of the generator set at the preset test point.

[0049] Optionally, before increasing the active power of the generator set to the test point, the following steps may be taken: adjust the rated capacity of each adjustable reactor 110 to its lowest position, prioritize the conduction of adjustable reactors with smaller rated capacities (i.e., use a smaller range), and avoid connecting adjustable reactors with larger rated capacities, as a smaller adjustment range would achieve the target power factor and thus affect measurement accuracy.

[0050] Optionally, after increasing the active power of the generator set to the target preset test point and recording the reactive power of the generator set at the preset test point, the method further includes:

[0051] Reduce the active power of the generator set to the preset test point, reduce the rated capacity of the adjustable reactor 110 to reduce the reactive power of the generator set, and make the power factor of the generator set reach the preset value.

[0052] If the rated capacity of the adjustable reactor 110 has reached its lowest level and the power factor of the generator set has not yet reached the preset value, the control unit 120 disconnects the switch unit 121 connected to the adjustable reactor 110.

[0053] And reduce the rated capacity of another adjustable reactor 110 to reduce the reactive power of the generator set until the power factor of the generator set reaches the preset value;

[0054] Record the reactive power of the generator set at the test point.

[0055] Specifically, based on the above embodiments, the active power reduction process can also complete the corresponding reactive power test. For example, after the active power of the generator set increases from 100% to 75%, the rated capacity of the adjustable reactor 110 adjusted at the end of the active power increase process is reduced to reduce the reactive power of the generator set until the power factor of the generator set reaches the preset value. If the rated capacity of the adjustable reactor 110 is reduced to the lowest position, the control unit 120 controls the switching unit 121 of the current adjustable reactor 110 to be cut off, and adjusts another adjustable reactor 110 until the power factor is adjusted to the preset value.

[0056] When the active power of the generator set drops to 50%, the rated capacity of the adjustable reactor 110 is reduced to decrease the reactive power of the generator set until the power factor of the generator set reaches the preset value. When the active power of the generator set drops to 25%, the rated capacity of the adjustable reactor 110 is reduced to decrease the reactive power of the generator set until the power factor of the generator set reaches the preset value. This allows for the measurement of the reactive power corresponding to the same power factor adjustment under different active power conditions.

[0057] In some embodiments, the reactive power testing method for a marine generator set can be implemented as a computer program tangibly contained in a computer-readable storage medium. In some embodiments, part or all of the computer program can be loaded into and / or installed on a device via ROM and / or a communication unit. When the computer program is loaded into RAM and executed by a processor, one or more steps of the reactive power testing method for a marine generator set described above can be performed. Alternatively, in other embodiments, the processor can be configured to perform the reactive power testing method for a marine generator set by any other suitable means (e.g., by means of firmware).

[0058] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0059] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A reactive power testing device for ship generator sets, characterized in that, include: At least two adjustable reactors and a control unit; the control unit includes at least two switching units and a busbar; Each of the adjustable reactors is connected in parallel to the busbar via a switching unit; The control terminal of the control unit is connected to each of the adjustable reactors respectively; the control unit is used to control the on / off state of the switching unit, and to control the reactive power adjustment of the adjustable reactors during the ship generator power test; The maximum adjustable rated capacity of the adjustable reactors varies. The control unit is used to, when adjusting reactive power, prioritize turning on the switching unit connected to the adjustable reactor with the smaller rated capacity, and increase the rated capacity of the currently turned-on adjustable reactor; if the rated capacity of the currently turned-on adjustable reactor has been adjusted to the highest position and the power factor of the generator set has not yet reached the preset value, then turn on the switching unit connected to the next adjustable reactor, and increase the rated capacity of the newly turned-on adjustable reactor, until the power factor of the generator set reaches the preset value.

2. The reactive power testing device for ship generator sets according to claim 1, characterized in that, It includes two adjustable reactors, one of which is an 800KVAR reactor; the other is a 2000KVAR reactor.

3. The reactive power testing device for ship generator sets according to claim 1, characterized in that, It also includes a steel structure housing for the fixed installation of the adjustable reactor and the control unit.

4. The reactive power testing device for ship generator sets according to claim 1, characterized in that, The switching unit is an air switch.

5. The reactive power testing device for ship generator sets according to claim 1, characterized in that, It also includes a remote control unit; the remote control unit is communicatively connected to the control unit; the remote control unit is used to remotely control the control functions of the control unit.

6. A method for testing the reactive power of a ship generator set, performed by the reactive power testing device for a ship generator set as described in any one of claims 1-5, characterized in that, The reactive power testing device for the ship generator set includes: at least two adjustable reactors and a control unit; the control unit includes at least two switching units and a busbar; The method includes: To increase the active power of the generator set to a preset test point, the control unit prioritizes turning on the switching unit connected to the adjustable reactor with a smaller rated capacity, and increases the rated capacity of the currently turned-on adjustable reactor to increase the reactive power of the generator set. If the rated capacity of the currently conducting adjustable reactor has been adjusted to the highest position and the power factor of the generator set has not yet reached the preset value, then the next switching unit connected to the adjustable reactor is turned on, and the rated capacity of the newly turned-on adjustable reactor is increased to improve the reactive power of the generator set until the power factor of the generator set reaches the preset value. Record the reactive power of the generator set at the preset test point.

7. The method for testing the reactive power of a ship generator set according to claim 6, characterized in that, Before increasing the active power of the generator set to the test point, the following steps are taken: adjusting the rated capacity of each of the adjustable reactors to the lowest value.

8. The method for testing the reactive power of a ship generator set according to claim 6, characterized in that, After increasing the active power of the generator set to the target preset test point and recording the reactive power of the generator set at the preset test point, the process further includes: Reduce the active power of the generator set to the preset test point, reduce the rated capacity of the adjustable reactor to reduce the reactive power of the generator set, and make the power factor of the generator set reach the preset value; If the rated capacity of the adjustable reactor has been adjusted to the lowest level and the power factor of the generator set has not yet reached the preset value, then the control unit disconnects the switching unit connected to the adjustable reactor. And reduce the rated capacity of another of the adjustable reactors to reduce the reactive power of the generator set until the power factor of the generator set reaches the preset value; Record the reactive power of the generator set at the test point.

9. A computer program product, characterized in that, The computer program product includes a computer program that, when executed by a processor, implements the reactive power testing method for ship generator sets as described in any one of claims 6-8.

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