Single-phase electrical parameters fast acquisition module

Abstract

The invention provides a single-phase electrical parameter rapid collection module which comprises a power source ancillary circuit, an electric parameter collection circuit, an electric parameter computing circuit, a single-chip microcomputer working circuit, a signal isolation circuit and an RS 485 communication isolation circuit, wherein the power source ancillary circuit is respectively connected with the electric parameter collection circuit, the electric parameter computing circuit, the single-chip microcomputer working circuit, the signal isolation circuit and the RS 485 communication isolation circuit; the electric parameter computing circuit is connected with the electric parameter collection circuit and the signal isolation circuit; the single-chip microcomputer working circuit is connected with the signal isolation circuit and the RS 485 communication isolation circuit. The single-phase electrical parameter rapid collection module has the advantages that the current and the voltage of single-phase electricity are collected in real time, a current effective value, a voltage effective value, a power factor, active power, reactive power, active electric energy and reactive electric energy of the single-phase electricity are obtained, the electrical parameters can be outwards transferred by an RS 485 interface, and an MODBUS communication protocol is conformed to.

Description

technical field [0001] The invention relates to a collection module, in particular to a fast collection module of single-phase electrical parameters. Background technique [0002] The world today is undergoing an energy industry revolution. The key to its development is to develop renewable energy and reduce the proportion of non-renewable energy in energy consumption; Improve energy efficiency. Electricity is the most widely used energy source in China. With the improvement of living standards and the development of the national economy, China's consumption of electric energy is getting higher and higher, but the efficiency of using electric energy is getting lower and lower. Lagging, industry regulatory information cannot be collected dynamically, accurately, and in real time, and the regulatory authorities cannot timely, completely, and accurately grasp the electricity consumption information of power users, so that the competent authorities lack scientific and effectiv...

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Problems solved by technology

Although the price of the current transformer is relatively low, there are hysteresis and saturation phenomena caused by the phase shift, resulting in phase error during measurement, which affects the measurement accuracy; at the same time, the dynamic current sensing range of the current transformer is small, and it does not have the characteristics of fast monitoring

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