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Test load, generator load test device and load test method

A technology of test load and load test, applied in the direction of motor generator test, improvement of basic electrical components, etc., to achieve the effect of eliminating power loss, wide adjustment range and reducing damage

Inactive Publication Date: 2018-03-09
SUZHOU NUCLEAR POWER RES INST +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems in the existing generator load test, the embodiment of the present invention provides a test load, a generator load test device and a load test method thereof

Method used

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  • Test load, generator load test device and load test method
  • Test load, generator load test device and load test method
  • Test load, generator load test device and load test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The embodiment of the present invention provides a test load, which is suitable for the load test of the generator, see figure 1 , the test load can include:

[0043] At least one fixed-value resistor 11, a magnetron reactor 12 for providing linearly adjustable impedance, and a power supply 13 (generally a DC power supply) for providing electric energy to the magnetron reactor 12. The fixed value resistor 11 is connected in series with the magnetron reactor 12 , and the magnetron reactor 12 is connected with the power source 13 .

[0044] In this embodiment, the impedance of the test load is mainly adjusted in two aspects. On the one hand, by selecting the number of fixed-value resistors 11, a fast and large-range step-type impedance adjustment is realized; on the other hand, by adjusting The impedance value provided by the magnetron reactor 12 is used to realize the impedance adjustment in a small linear range. This not only provides a linearly adjustable impedance f...

Embodiment 2

[0053] The embodiment of the present invention provides a generator load test device, suitable for generator load test, see image 3 , the device can include:

[0054] The test load 1 is connected with the generator under test, and is used to provide a linearly adjustable impedance for the generator load test. The test load 1 may include at least one fixed-value resistor 11, a magnetron reactor 12 for providing a linearly adjustable impedance, And a power supply 13 for providing electric energy for the magnetron reactor 12 , the fixed value resistor 11 is connected in series with the magnetron reactor 12 , and the magnetron reactor 12 is connected with the power supply 13 .

[0055] The voltage and current sensor 2 is connected to the test load 1, and is used to obtain load test information on the test load 1, and the load test information includes: load voltage and load current.

[0056] The processor 3 is connected with the voltage and current sensor 2, and is used to calcu...

Embodiment 3

[0074] The embodiment of the present invention provides a generator load test method, which is executed by the generator load test device in the second embodiment, see Figure 5 , the method can include:

[0075] Step S31, providing linearly adjustable impedance through the test load.

[0076] Specifically, the above step S31 may be implemented in the following manner:

[0077] S311. By selecting the number of fixed-value resistors, the impedance value of the test load reaches a preset range of the impedance value required for the load test.

[0078] S312, adjusting the impedance value of the magnetron reactor linearly, so that the impedance value of the test load is the same as the impedance value required for the load test.

[0079] In this embodiment, by selecting the number of fixed-value resistors, the impedance value of the test load can be within the preset range of the impedance value required for the load test, so as to realize fast and large-range step-type impedan...

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Abstract

The invention discloses a test load, a generator load test device and a load test method. The test load comprises at least one fixed resistor (11), a magnetic control reactor (12) for providing a linear regulation load, and a power source (13) for providing power for the magnetic control reactor (12), wherein the fixed resistor is connected in series with the magnetic control reactor, and the magnetic control reactor is connected with the power source. For the test load, on one hand, by selecting the number of fixed resistors, fast and relatively large range of impedance adjustment is realized, on the other hand, impedance provided by the magnetic control reactor is adjusted to realize linear small-range impedance adjustment, so not only can linear regulation impedance is provided by the test load for the generator load test, linear active power regulation requirements of a part of generator load tests are satisfied, but also changing a conduction angle of a generator output current isnot needed, increase of a harmonic wave component of the current is avoided, and damage to a to-be-detected motor is reduced.

Description

technical field [0001] The invention relates to the technical field of generator load test, in particular to a test load, a generator load test device and a load test method thereof. Background technique [0002] When the existing nuclear power plant emergency diesel engine generators are doing load tests, the active power is mainly adjusted by adjusting the impedance of the dry load, or by using power electronic components (such as thyristors) to control the conduction angle of the AC output of the generator to be tested. Adjust the active power, or connect the generator to the grid through the utility bus to adjust the active power of the generator. [0003] The dry load is composed of different numbers of fixed resistance resistors. During the load test, the purpose of adjusting the impedance is achieved by adjusting the number of resistors. However, the impedance can only be adjusted in steps, not linearly, which is difficult to meet The requirements of various load tes...

Claims

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Application Information

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IPC IPC(8): G01R31/34G01R1/20
CPCG01R1/20G01R31/34
Inventor 李江吴升华刘波胡兵冯伟岗
Owner SUZHOU NUCLEAR POWER RES INST
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