A test power supply and cascaded static synchronous compensator converter valve test system
A static synchronous compensation and test system technology, applied in the direction of instruments, measuring electronics, measuring devices, etc., can solve problems such as complicated steps, limited measured objects, cumbersome circuit construction, etc., and achieve the effect of simplifying complexity and operating complexity
Active Publication Date: 2021-04-20
NR ELECTRIC CO LTD +2
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Problems solved by technology
[0006] In order to solve the problems of cumbersome circuit construction, complicated steps, limited AC power supply in the factory and the inability to realize the system test in the existing converter valve test, the present invention proposes a test power supply and a cascaded static synchronous compensator The converter valve test system has the characteristics of integration, universality, adjustable voltage and frequency, high degree of automation, and suitable for system tests.
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[0036] The present invention will be further described below in conjunction with accompanying drawing.
[0037] like figure 1 Shown is the schematic diagram of the overall system composition of the present invention. The invention provides a test power supply, including multiple phase-shifting transformers, reactors and N power supply modules composed of rectifier modules, voltage stabilizing capacitors and inverter modules connected in series, N≥2, the primary coils of the multiple phase-shifting transformers are connected to the AC Power supply connection, multiple phase-shifting transformers include N secondary coils, each secondary coil is connected to a power module, the AC output terminals of the power module are connected in series from end to end, and connected in series with the reactor as the output terminal of the test power supply.
[0038] Wherein, the rectification module is a three-phase bridge rectification circuit composed of diodes or a three-phase bridge re...
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The invention discloses a test power supply and a cascaded static synchronous compensator converter valve test system. The test system of the present invention includes a test power supply with adjustable output voltage and frequency, a converter valve to be tested, a control device and a human-computer interaction system. Among them, the test power supply is connected to the primary stage of multiple phase-shifting transformers by the AC power supply, and each secondary of the transformer is connected to the rectifier module and output to the DC bus, and then passed through the inverter module and cascaded in turn, and finally output through the connection reactance. The control device adjusts the test power supply and the measured converter valve synchronously through optical fiber communication. The converter valve test system has the characteristics of integration, universality, adjustable voltage and frequency, high degree of automation, and suitable for system tests. The invention also discloses a test method for a test system of a cascaded static synchronous compensator converter valve.
Description
technical field [0001] The invention belongs to the technical field of high-power electric power electronics, and in particular relates to a test power supply and a cascaded static synchronous compensator converter valve test system. Background technique [0002] Static synchronous compensator is a voltage source converter device based on fully-controlled semiconductor switching devices. It is the most cutting-edge technology route and future development direction for applying high-power power electronics technology to improve power quality. Cascaded topology is the most effective solution and trend for the development of static synchronous compensators towards high voltage level and large capacity. [0003] Static synchronous compensators have been widely used in transmission and distribution grids of various voltage levels, various industrial and mining enterprises, wind power, photovoltaic power plants, DC transmission converter stations and other scenarios. In order to ...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 谢晔源盛晓东吴扣林杨幸辰祁琦王宇李钊
Owner NR ELECTRIC CO LTD