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APF parallel operation system and method based on high-speed serial optical fiber

A high-speed serial and operating system technology, applied in active power filtering, AC network to reduce harmonics/ripples, etc., can solve problems such as system paralysis

Active Publication Date: 2019-03-12
XINFENGGUANG ELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the APF parallel operation system using this master-slave control system has the following disadvantages: once the master controller fails, the entire system will be in a paralyzed state
If you want to get out of the paralyzed state, you can only repair or replace the main controller

Method used

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  • APF parallel operation system and method based on high-speed serial optical fiber
  • APF parallel operation system and method based on high-speed serial optical fiber
  • APF parallel operation system and method based on high-speed serial optical fiber

Examples

Experimental program
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Embodiment

[0029] An APF parallel operation system based on high-speed serial optical fiber, including load 9, bus bar 1, current transformer installed on the grid side or load side and 4 APF units, the compensation capacity of the 4 APF units is equal, and the load 9 passes through the cable Connected to the busbar. The APF unit includes a controller, the primary side of the current transformer is socketed on the bus 1, and the secondary side of the current transformer is sequentially connected in series with the controllers of each APF unit, and the controller includes a DSP module and an optical fiber communication module and a voltage signal detection module for collecting voltage signals, the optical fiber communication module includes an optical fiber transmitting interface and an optical fiber receiving interface. The optical fiber communication modules of all APF units are serially connected through communication optical fibers to form a ring network. The DSP modules of all APF u...

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Abstract

The invention provides an APF parallel operation system based on a high-speed serial optical fiber, and relates to the technical field of power electronics control. The APF parallel operation system comprises a current transformer installed on a network side or a load side and no less than two APF units and is characterized in that the secondary side of the current transformer is sequentially connected with the various APF units, each APF unit comprises a controller, and each controller comprises a DSP module, an optical fiber communication module and a grid voltage signal detection module foracquiring grid connection point voltage signals; and the optical fiber communication modules of all the APF units are sequentially connected in series through the communication optical fiber to forma looped network, main control programs and slave control programs are preset in the DSP modules of all the APF unit controllers the controller of one APF unit calls the main control program, the controllers of the other APF units call the slave control programs, and when the parallel APF units individually generate a fault, usage can be quickly recovered by setting parameters on the condition that equipment is not replaced.

Description

Technical field: [0001] The invention relates to the technical field of power electronic control, in particular to an APF parallel operation system and method based on high-speed serial optical fibers. Background technique: [0002] With the development of power electronic technology, more and more power electronic devices are used in the power grid, which brings a lot of harmonics and seriously affects the quality of the power grid. As a device for filtering harmonics, APF (Active Power Filter) can quickly filter out harmonics in the power grid and improve the quality of the power grid. [0003] Due to the limited capacity of a single machine, in practical applications, APF uses multiple devices to run in parallel and be controlled by a main controller. For example, the application number is 201110188074.9, and the subject name is "A Master-Slave Control System for APF / SVG Parallel Operation". Voltage transformer and current transformer, among them, the output terminal of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01
CPCH02J3/01Y02E40/20
Inventor 任其广陈早军李志刚姜圆九林亚军朱海梅李菲菲
Owner XINFENGGUANG ELECTRONICS TECH CO LTD
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