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DSP-based voltage drop compensation control system and method

A voltage drop and control system technology, applied in AC network voltage adjustment, sustainable manufacturing/processing, climate sustainability, etc., can solve problems such as limited ability of PI controller voltage change, adjustment parameters, complex grid structure, etc. Achieve the effects of improving robustness and adaptability, improving dynamic characteristics, and broad application prospects

Inactive Publication Date: 2016-03-09
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0003] At present, the traditional PI regulation is generally used in the outer loop control. Due to the complex structure of the power grid, it is difficult to establish a detailed power grid model including a voltage drop compensator, which leads to many problems in the outer loop controller using PI regulation: (1) Difficulty Adaptively adjust the parameters according to the operation mode of the power grid, (2) the correctness of the PI controller based on the simulation analysis cannot be guaranteed, (3) the PI controller has limited ability to track the voltage change of the power grid, which will bring harmonic pollution to the power grid

Method used

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  • DSP-based voltage drop compensation control system and method

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Embodiment

[0041] The signal conditioning circuit is composed of an AC voltage sensor and a filter conditioning circuit; the input terminal of the AC voltage sensor receives the bus electrical signal through a transformer, and its output terminal is connected to the input terminal of the filter conditioning circuit; the filter conditioning circuit The output end is connected with the input end of the DSP control module through a phase-locked loop circuit.

[0042] The voltage sensor is a KD250V / J2V module of Kehai Company.

[0043] The DSP control module (see Figure 5 ) adopts TMS320F2812DSP chip, and its built-in module includes EV event manager, ADC analog-to-digital converter, SCI serial port communication module; Composed; the ADC analog-to-digital conversion module receives 8 analog signals of the signal conditioning circuit and performs sampling processing; the CAPI module performs phase-locked capture on the signal of the signal conditioning circuit through a phase-locked loop c...

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Abstract

A DSP-based voltage drop compensation control system is characterized by comprising a signal conditioning module, a signal drive module, a DSP control module, a converter monitoring module and a converter module. A control method of the DSP-based voltage drop compensation control system comprises signal acquisition, conditioning, calculating, determining, compensating and outputting. The invention is advantageous in that the robustness and adaptability of a voltage drop compensator controller are improved so that a voltage drop compensator can quickly and stably compensate the voltage of a mounting point, the dynamic features of the system is improved, and by using the DSP of TMS320LF2812A type from a TI company as the core of control, the invention is simple in structure, easy to implement and has a broad application prospect in the industry.

Description

(1) Technical field: [0001] The invention belongs to the technical field of power system control, in particular to a voltage drop compensator control system and method based on DSP (Digital Signal Process, digital signal processing). (two) background technology: [0002] With the development of power systems, energy storage technologies such as superconducting energy storage technology, battery energy storage technology, flywheel energy storage technology and supercapacitors have begun to be used in actual power grids to form voltage drop compensators. Among them, the representative voltage drop compensator is STATCOM (Static Synchronous Compensator, static synchronous compensator), SMES (superconducting magnetic energy storage, superconducting magnetic energy storage system) and DVR (dynamic voltage restorer, dynamic voltage restorer), where STATCOM and SMES are connected in parallel At the busbar of the power grid, the DVR is connected in series in the outgoing line of the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/12
CPCY02P80/20
Inventor 马步云岳巍澎臧鹏王婧苏长江史学伟
Owner STATE GRID CORP OF CHINA
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