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Analysis and improvement of split core current transformer
Dec 17 , 2020
Split core current transformer, as its name implies, is a current transformer that can be opened and closed on the primary circuit (the side of the measured current circuit, usually a cable or parent card), and is a secondary device by sensing the current on the primary circuit Take measurements or protect relays. In recent years, although the development of China's distribution network has i...
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Smart grid: electronic transformer interface standards urgently need to be unified
Oct 28 , 2020
New electronic transformers have been developed and applied in our country for more than ten years, and more than 300 power stations have been tested or officially operated. The number of domestic units engaged in the research and development of electronic transformer technology has increased to more than 30, and some or all series of manufacturers have been close to 10. At present, in addition to...
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A brief introduction to zero sequence transformer
Oct 28 , 2020
Zero-sequence current transformers are also called residual current transformers, ground current transformers or leakage current transformers. They are usually used in power fire protection equipment. When the power system generates zero-sequence grounding current, it is used in conjunction with the relay protection device for pre-protection Or monitor. The basic principle of the zero sequence cur...
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The future development direction of electronic transformers
Oct 28 , 2020
According to media reports, the future research and development directions of electronic transformers include passive sensing, structural combination, functional reuse, and component standardization. Passive sensing: Due to the technical advantages of passive sensing, independent ECT sensing components will tend to be passive. This includes that active sensors will be self-powered and move towards...
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The main function of reactor
Sep 18 , 2020
Reactors are also called inductors. When an electrical conductor is connected to the power supply, it will create a magnetic field in a certain space it occupies. Therefore, all electrical conductors that can carry current are inductive in a general sense. However, if the power supply is long, the inductance of the electrical conductor is not large, and the resulting magnetic field is not strong. ...
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What role can the reactor play
Sep 18 , 2020
Reactors are also called inductors. When an electrical conductor is connected to the power supply, it will cause an electromagnetic field in a certain space occupied by it. Therefore, all electrical conductors that can carry current are inductive in a general sense. The inductive load must absorb the active current and reactive current of the power grid to operate, so that the power grid can impro...
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Let's talk about inductors today to see how it works
Sep 17 , 2020
Principle and main function of inductors Inductor is an electronic component that can convert electrical energy into magnetic energy, store it under appropriate conditions, and then release it and then convert it into electrical energy. The most important role of inductor is electromagnetic conversion. Inductor All electrical conductors (transmission lines) will cause electromagnetic fields when p...
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You can understand these simple voltage transformer common sense
Sep 17 , 2020
Regarding voltage transformers, in fact, many people don’t know about it. Although voltage transformers have always been near your friends and serve your daily lives, then the following is about voltage transformers. Detailed description. 1. The working principle of voltage transformer is introduced in detail The number of the voltage transformer is P.T, and the working principle of the voltage tr...
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What is the difference in working principle between current transformer and voltage transformer
Sep 17 , 2020
Working principle of current transformer The working principle of the current transformer is similar to that of the transformer. The most critical difference with the voltage transformer is that under normal operation, the pressure drop on the primary and secondary windings is not large, which is equivalent to a transformer with a short-circuit fault condition. Therefore, the magnetic flux Ф in th...
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What is the difference between a current transformer and a voltage transformer?
Sep 17 , 2020
1. The structure is different: The primary winding of the current transformer is wound with thick lines, usually only one or a few turns, and is connected in series with the load of the measured current; the voltage transformer is a step-down transformer, and its primary winding coil has many turns, which is consistent with the measured current load. The high-voltage power grid is connected in par...
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