Intelligent transmission power angle compensation device based on igbt switch microgrid and large power grid
A compensation device and micro-grid technology, applied in the field of power angle compensation device and intelligent transmission power angle compensation device, can solve the problems of large harmonic component of AC regulation control amount, precise control misoperation, poor accuracy, etc. Effects of large wave components, poor accuracy, and reduced power angular offset
Active Publication Date: 2015-09-16
山西合创电力科技有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to solve the technical difficulties existing in the existing power angle compensation device, such as the large harmonic component of the AC adjustment control amount, poor precision, slow speed, and easy misoperation of the precise control of static stability, and to provide a system that can improve Static stability, improved transient stability of the system, high accuracy and fast speed based on IGBT switch microgrid and large grid intelligent transmission power angle compensation device
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[0011] As shown in the accompanying drawings, the IGBT-based switching microgrid and large grid intelligent transmission power angle compensation device in this embodiment includes a microgrid side step-down transformer T 1 , a diode rectifier circuit 1, a micro-grid side parameter detection circuit 2, an IGBT switch PWM drive circuit 7 and a large power grid side parameter detection circuit 9, wherein: it also includes a series power angle compensation transformer T 2 , DC system detection control circuit 3, intelligent flexible transmission power angle compensation device DSP controller circuit (TMS320F28335, TI) 4, power angle offset calculation circuit 5, IGBT switch circuit 6 and transmission line stability type discrimination circuit 8;
[0012] Microgrid side step-down transformer T 1 Primary Coil T 11 The positive pole of the microgrid side busbar S point, the left input / output port I / O of the microgrid side parameter detection circuit 2, and the microgrid side power ...
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The invention relates to an intelligent transmission power angle compensation device based on an IGBT switch microgrid and a large power grid. The intelligent transmission power angle compensation device based on the IGBT switch microgrid and the large power grid mainly solves the technological difficulties that according to an existing power angle compensation device, alternating-current adjustment controlled quantity harmonic components are large, the precision is poor, the speed is low, and misoperation of precision control of static stabilization can occur easily. According to the technical scheme, the intelligent transmission power angle compensation device based on the IGBT switch microgrid and the large power grid comprises a microgrid side step-down transformer T1, a diode rectification circuit, a microgrid side parameter detection circuit, an IGBT switch PWM driving circuit, a large power grid side parameter detection circuit, power angle compensation transformers T2 which are connected in series, a direct-current system detection control circuit, an intelligent flexible transmission power angle compensation device DSP controller circuit, a power angle skewing calculating circuit, an IGBT switch circuit and an electric transmission line stabilization type judging circuit. According to the intelligent transmission power angle compensation device based on the IGBT switch microgrid and the large power grid, the electric transmission line static or transient stability condition is judged according to delta P(t), delta Pb(t) and delta alpha (t), and then the IGBT switch circuit is controlled.
Description
technical field [0001] The invention relates to an IGBT switch-based micro-grid and large power grid intelligent transmission power angle compensation device, which belongs to a power angle compensation device for intelligent and flexible transmission of active power between a micro-grid and a large power grid through a transmission line. Background technique [0002] In the process of transmitting active power through the transmission line between the micro-grid composed of new energy and the large power grid, if there is a small disturbance in the transmission line, it will present a static stability problem. To solve the static stability problem, it is necessary to adjust the corresponding switch of the power angle compensation device in the line Perform rapid and precise operations so that the power angle operating characteristic curve of active power transmission runs at the initial static operating point; if the transmission line fails, there will be a transient stabili...
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IPC IPC(8): H02J3/38
CPCY02A30/60
Inventor 郑德化孙雁卿李刚菊王世杰杨文元范莉平刘丽娟赵永强
Owner 山西合创电力科技有限公司