A circuit interface and state monitoring ied

Abstract

The embodiment of the invention provides a circuit interface and a state monitoring IED (Intelligent Electronic Device). The circuit interface comprises a signal control FPGA (Field Programmable Gate Array), a signal conversion module, a power output selection module, a double-power regulating module, a single-power regulating module and a terminal set, wherein one ends of the double-power regulating module and the single-power regulating module are externally connected with a DC (Direct Current) power supply and the other ends of the double-power regulating module and the single-power regulating module are connected with the power output selection module; the terminal set is sequentially connected with the power output selection module, the signal conversion module and the FPGA; the FPGA controls the power output selection module to select the double-power regulating module or the single-power regulating module to receive the direct current input by the DC power supply, and the direct current is output by the terminal set or is transmitted to the FPGA by the signal conversion module; the FPGA receives an analog signal or a digital signal from the terminal set through controlling on / off of an analog input module and a digital input module inside the signal conversion module. The circuit interface enables the state monitoring IED to be flexibly upgraded.

Description

technical field [0001] The invention relates to the field of smart grids, and more specifically relates to a circuit interface and a state monitoring IED. Background technique [0002] The smart grid is based on the physical grid including various power generation equipment, transmission and distribution networks, electrical equipment and energy storage equipment, and integrates modern advanced sensor measurement technology, network technology, communication technology, computing technology, automation and intelligent control. A new type of power grid formed by a high degree of integration of technologies and physical power grids. Therefore, the status monitoring data of various institutions and equipment in the smart grid become the basis for the control core to issue instructions or take countermeasures. [0003] At present, the commonly used mode is to collect various AC and DC sensor signals through different and dedicated circuit interfaces in the IED (Intelligent Elec...

AI Technical Summary

Problems solved by technology

[0004] In view of this, in order to solve the defect that the existing IED equipment cannot be upgraded flexibly, a circuit interface and a state monitoring IED are provided. The technical solution is as follows:

Images