A device for generating exponentially repetitive pulses with nanosecond-level steep front
A technology of exponential repetitive pulse and generating devices, which is applied in the direction of measuring devices, instruments, measuring electronics, etc., can solve the problem of little improvement in the performance of testing instruments, and achieve the effects of improving efficiency and positioning accuracy, small size, and light weight
Active Publication Date: 2018-07-20
STATE GRID HEBEI ENERGY TECH SERVICE CO LTD
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[0006] From the technical characteristics disclosed in the above patents, it can be seen that the research focus of most current patents is mainly on the means and diagnosis methods of on-site detection, and there are few research results on the performance improvement of the detection instrument itself.
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[0024] Depend on Figure 1-4 It can be known from the illustrated embodiment that it includes a power supply AC, a power frequency transformer T1, a rectifier circuit H1, a repetitive pulse generating circuit P1 and a load resistor R2; the output terminal of the power supply AC is connected to the corresponding primary side input of the power frequency transformer T1 terminal; the secondary output terminal of the power frequency transformer T1 is connected to the corresponding input terminal of the rectifier circuit H1; the output terminal of the rectifier circuit H1 is connected to the corresponding input terminal of the repetitive pulse generating circuit P1; the repetitive pulse generation The output terminal of the circuit P1 is connected to the load resistor R2.
[0025] The AC power socket has three contact points, wherein the contact point G is grounded, the contact point N (neutral line) and the contact point L (live line) are respectively connected to the input termin...
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The invention discloses a nanosecond steep leading edge index repetition pulse generator, which comprises a power source AC, an industrial frequency transformer T1, a rectifying circuit H1, a repetition pulse generation circuit P1 and a load resistor R2. The beneficial effects are that the nanosecond steep leading edge index repetition pulse generator has the advantages of being safe, convenient, flexible and accurate and the like; the problem that since the buffeting degree of the rising edge of a generator rotor turn-to-turn short circuit fault diagnosis device cannot be adjusted, turn-to-turn fault positioning is out of alignment is solved; technological level in the related field is improved, and the defects of the detecting technique in the actual application are compensated; an isolation type architecture design is adopted, so that safety of personnel when operating the instrument is ensured; the device is small in size and light in weight; operation personnel can adjust the rising edge and falling edge of the index of the high-frequency repetition pulse conveniently; and detection efficiency and positioning precision of the work personnel are greatly improved.
Description
technical field [0001] The invention belongs to the technical field of generator rotor inter-turn short-circuit fault detection and location, and relates to a nanosecond-level steep front exponential repetitive pulse generator. Background technique [0002] Generator operation accidents are one of the important problems in the development of my country's electric power industry. Some vicious accidents have brought huge losses to the national economy. Statistics of accidents over the years show that many accidents are related to motor design and manufacturing quality, and also reflect many problems in operation and maintenance. [0003] Among the various components of a large turbogenerator, the rotor is in a state of high-speed rotation and bears great mechanical stress and thermal load, so the fault detection of the rotor is particularly important. Due to the poor processing technology in the manufacturing process and the influence of various electromechanical effects duri...
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IPC IPC(8): G01R31/06
CPCG01R31/72
Inventor 岳啸鸣范辉潘瑾张建忠
Owner STATE GRID HEBEI ENERGY TECH SERVICE CO LTD