An Ethernet-based active power filter remote monitoring system and method
A remote monitoring system, power filter technology, applied in active power filtering, information technology support systems, AC networks to reduce harmonics/ripples, etc. , accurate and real-time communication needs, etc., to achieve the effect of large data transmission, high accuracy and good real-time performance
Active Publication Date: 2018-02-06
NANJING APAITEK TECH
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Problems solved by technology
[0003] Since the active power filter has a large amount of operating data, the monitoring system has high requirements for remote data communication. Traditional bus mechanisms such as RS232, RS485, etc. have been unable to meet the high-speed, accurate and real-time communication needs of large data volumes.
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[0013] Such as figure 1 As shown, an Ethernet-based remote monitoring system for active power filters includes a display unit, a communication unit, a main control unit and an active filter bank. The active filter bank is composed of n active filters. ≥1, each active filter interacts with the main control unit through optical fiber; the main control unit interacts each active filter operating data and grid related data with the communication unit through the optical fiber. The controller of the communication unit includes FPGA and MCU, FPGA and MCU exchange data through dual-port RAM; FPGA receives data sent by main control unit, MCU connects and controls Ethernet controller of remote display unit and PC monitoring system, and communicates remotely through internet.
[0014] The FPGA of the communication unit checks the RAM state space with a cycle of 200ms, and reads and writes data according to the corresponding communication state; MCU reads the state space in the RAM cyclicall...
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The invention discloses an Ethernet-based active power filter remote monitoring system and method. The system includes a display unit, a communication unit, a main control unit and an active filter bank. The active filter bank consists of n active Filter composition, n≥1, each active filter interacts with the main control unit through the optical fiber; the main control unit interacts with the communication unit through the optical fiber with the operating data of each active filter and the power grid related data, and the communication The controller of the unit includes FPGA and MCU. FPGA and MCU perform data interaction through dual-port RAM; FPGA receives the data sent by the main control unit, and MCU connects and controls the Ethernet controller of the remote display unit and the PC monitoring system, remotely through the internet communication. The system of the present invention has simple structure, large amount of data transmission, high accuracy, and good real-time performance. It combines Ethernet access technology with active power filter data acquisition, and realizes the monitoring and control of active power filters very well. , data download and other functions.
Description
Technical field [0001] The invention relates to a remote monitoring system, and more specifically to a remote monitoring system through an active power filter based on Ethernet. Background technique [0002] In modern society, load harmonic currents seriously affect the use of electrical energy by users. Active power filters are a powerful means to solve power harmonic problems. The quality of the power grid and the operation of active power filter devices need to be monitored by the terminal monitoring system. Therefore, whether the active power filter monitoring system can monitor the on-site active power filter operation status and power grid quality in real time, accurately and comprehensively; whether it can accurately control the on-site active power filter operating parameters, it seems critical important. [0003] Because the active power filter has a large amount of operating data, the monitoring system has high requirements for remote data communication. Traditional bus ...
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IPC IPC(8): H02J13/00H02J3/01
CPCH02J13/0062H02J3/01H02J13/00001Y04S40/124Y04S40/128Y02E40/20Y02E60/00
Inventor 张勇葛文海仇志凌芮国强陈斐斐
Owner NANJING APAITEK TECH