A three-phase electronic combined transformer

A technology of combining transformers and sensors, which is applied in the directions of instruments, measuring electrical variables, voltage/current isolation, etc., can solve the problems of limited accuracy improvement in measurement and protection, and achieve high measurement accuracy requirements, accurate power grid parameter characteristics, and reduce cost effect
CN105759101BActive Publication Date: 2019-04-16YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
Publication Date
2019-04-16

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The embodiment of the invention discloses a three-phase electronic combined mutual inductor. The three-phase electronic combined mutual inductor comprises a combined sensor, a signal processing module, a signal conversion module and a merging unit connected successively. The combined sensor comprises a low power iron core coil, a hollow coil, an optical voltage sensor and an energy-gaining coil. The merging unit is connected with a synchronization pulse generating module. The synchronization pulse generating module is also connected with any one of the combined sensor, the signal processing module and the signal conversion module. According to the embodiment of the invention, the structure of an existing hollow coil is improved, the measuring precision of the three-phase electronic combined mutual inductor is improved, the protecting precision is relatively high, the development tendency that the measuring precision and the protecting precision of the intelligent power grid are improved day by day is met, and the application prospect is wide.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of electronic transformers, in particular to a three-phase electronic combined transformer. Background technique

[0002] Smart grid has become the focus of attention in the world and is the future development direction of power grid. Smart grid involves all aspects of the power system. In recent years, digital substations have developed rapidly. In digital substations, metering circuits are composed of electronic transformers, optical fiber networks and digital instruments.

[0003] An electronic transformer consists of one or more voltage or current sensors connected to a transmission system and a secondary converter to transmit a quantity proportional to the quantity to be measured and supplied to measuring instruments, meters and relay protection or control circuits. In the case of a digital interface, the measurement information is output via the merging unit. Electronic transformer is one of the key ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More