35kv direct hanging svg system and its plc logic control method
A logic-controlled, direct-mounted technology, applied in flexible AC transmission systems, photovoltaic power generation, wind power generation, etc., can solve problems such as large footprint, elimination difficulties, and harmonic generation, and achieve the effect of reducing transmission loss
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[0039] The 35kV direct-mounted SVG control system adopts the configuration monitoring + PLC + controller mode. Among them, configuration monitoring is mainly responsible for issuing various control parameters, protection settings of the whole machine, and displaying operation status and faults; PLC is mainly responsible for the operation process of the whole machine; the main controller adopts DSP+FPGA architecture, and DSP is a step-down type from the previous generation. SVG’s TMS320F2812 is upgraded to TMS320F28335. TMS320F28335 has 32-bit floating-point calculation capabilities and high accuracy, which can easily calculate decimals. Fixed-point TMS320F2812 cannot directly calculate decimals and must be converted. It is mainly responsible for monitoring, PLC and FPGA. Data transfer between: FPGA is mainly responsible for 35kV direct-mounted SVG sampling, algorithm calculation, PWM pulse generation and protection, etc.
[0040] Such as figure 1 As shown, a 35kV direct-mounted S...
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