Fault voltage generation device and voltage drop test method
A fault voltage and generating device technology, which is applied in the monitoring of wind turbines, engines, wind turbines, etc., can solve the problems of redundant reactors, increased equipment volume, and increased equipment costs, so as to reduce equipment costs and improve efficiency , the effect of reducing the number of
Pending Publication Date: 2017-08-18
北京群菱能源科技有限公司
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In this configuration mode, when performing a single test, there are multiple groups of reactors that are idle, resulting in a great redundant waste of reactors, increasing the volume of the equipment, and increasing the cost of the equipment.
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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present disclosure with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present disclosure.
[0027] The invention provides a fault voltage generating device, such as Figure 4 and 5 As shown, the device includes a reactor, a bypass switch and a short circuit switch, where:
[0028] One end of the short-circuit switch is connected to one end C of the reactor, and the other end of the short-circuit switch is grounded; one end of the bypass switch is connected to the other end A of the reactor, and the other end is used as a grid access point ; The o...
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The invention relates to a fault voltage generation device and a voltage drop test method. The device comprises an electric reactor, a by-pass switch and a short-circuit switch. One end of the short-circuit switch is connected with one end of the electric reactor, and the other end of the short-circuit switch is grounded; one end of the by-pass switch is connected with the other end of the electric reactor, and the other end of the electric reactor is served as a power grid access point; the other end of the by-pass switch is connected with a middle contact on the electric reactor; and the middle contact is located between the two ends of the electric reactor and is served as a dropped voltage test point. Only one electric reactor is arranged, the structure is simple, the number of electric reactor monomers is reduced, and the equipment cost is lowered to a great extent. Meanwhile, wiring is simple, only the position of the middle contact needs to be moved, compared with the prior art, operation in the test process is simple, and it is beneficial to improvement of efficiency of site tests.
Description
technical field [0001] The invention relates to the technical field of wind power detection, in particular to a fault voltage generating device and a method for performing a voltage drop test. Background technique [0002] Since the "Eleventh Five-Year Plan", my country's wind power industry has developed rapidly, and the new installed capacity of wind power has doubled year after year. The current installed capacity ranks first in the world. However, while my country's wind power is developing rapidly, it is also facing quality and safety issues brought about by large-scale access to the power grid. In order to ensure the stability of the power grid after the large-scale access of wind power, the relevant national departments have formulated relevant grid-connected technical standards and specifications, which clearly require that when the instantaneous fault of the power grid causes the voltage to drop to a certain value in a short period of time, the wind turbine It can ...
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IPC IPC(8): F03D17/00
Inventor 姚海强姚承勇张进滨张进郭
Owner 北京群菱能源科技有限公司