Test system and method for performance of electronic current transformer

A technology of current transformer and test system, which is applied in the direction of instruments, measuring electric variables, measuring devices, etc., can solve the problems of increasing workload, achieve the effects of reducing repeated wiring, improving test efficiency, and facilitating on-site management
CN106932746AActive Publication Date: 2017-07-07STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +2
3 Cites 3 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
Publication Date
2017-07-07

Smart Images

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

Abstract

The invention discloses a test system and method for a performance of an electronic current transformer. The system is composed of a standard current transformer, a testing electronic current transformer, a sampling rate adaptive module, and a merging unit, wherein primary sides of the standard current transformer and the testing electronic current transformer are connected in series. The input terminal of the sampling rate adaptive module is connected with the output terminal of the testing electronic current transformer; the input terminal of the merging unit module is connected with the output terminals of the standard current transformer and the sampling rate adaptive module respectively. According to the invention, with simultaneous access of electromagnetic current transformer and the testing electronic current transformer sampling loops in hybrid sampling differential protection, time delay testing of a hybrid sampling differential loop is completed by using the electromagnetic current transformer as a reference. The system and method are applied to delay compensation in UPFC protection.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of flexible direct current transmission, and in particular relates to an electronic current transformer performance test system and method. Background technique

[0002] The DC electronic transformer is an important device for measuring the voltage of the flexible DC transmission system, and its measurement performance is related to the safe and stable operation of the flexible DC transmission system. Good on-site test equipment will help improve the test efficiency of DC voltage transformers and ensure the safe and stable operation of the flexible DC transmission system.

[0003] In the current field test, the test method is mainly a flow test, where currents of different sizes are passed through the primary side to test the accuracy and delay characteristics of the DC electronic transformer. Multiple wirings are required for the accuracy and delay characteristics tests. Repeated measurement increases the ...

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