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State Grid Xinjiang Electric Power Self-developed the first domestic low-voltage current transformer live detection device put into use.

Tianshan Net News (Photographic report by correspondent Yin Wenqing) On March 16, the first domestic low-voltage current transformer live detection device independently developed by State Grid Xinjiang Electric Power Co., Ltd. was put into use in Kuitun, Xinjiang. Relying on this set of equipment, power supply companies in various cities in Xinjiang can carry out "non-inductance" detection of low-voltage current transformers without power outages in the future, so as to minimize the impact of users' electricity consumption.

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What are the working principles and characteristics of voltage transformers?

The impedance of the voltage transformer itself is very small. Once the secondary side is short-circuited, the current will increase sharply and burn the coil. For this reason, the primary side of the voltage transformer is connected with a fuse, and the secondary side is reliably grounded, so as to avoid personal and equipment accidents caused by high potential to the ground on the secondary side when the insulation of the primary and secondary sides is damaged.

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Why do voltage transformers have several output terminals?

The voltage transformer is a transformer with iron core. It is mainly composed of 1. secondary coil, core and insulation. When a voltage U1 is applied to the primary winding, a magnetic flux φ is generated in the core.

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Henan Zhengzhou Power Supply Company: Scientific Supply See Results

During the peak summer this year, Henan Zhengzhou Power Supply Company strictly implemented the decision-making and deployment related to power supply protection, strengthened load management, scientifically controlled load, and formed a joint force with the government and society.

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Shaoyang Substation Maintenance Company to Carry out Current Transformer Replacement Work to Ensure Safe Operation of Equipment

Shaoyang News Network, December 16 (Correspondent Shen Wanda Wang Ke) "The current transformer of Xianling Line at 306 intervals has a small change ratio and a large measurement error. In serious cases, it may cause the protection device to malfunction and must be replaced as soon as possible." On December 16, the maintenance personnel of Shaoyang Substation Maintenance Company were 110 kV Xianchaiqiao Substation to rectify the problems found in the Spring Festival power supply safety inspection.

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domestic first set! Successful trial operation in Pu!

On the evening of April 22, the first domestic 252 kV environmental protection gas (clean air) current transformer was successfully put into trial operation in Puyang. This is an important measure for the State Grid Corporation to implement the national "double carbon" policy and promote the green environmental protection of equipment. It is also one of the important pilot work of the State Grid Corporation's current transformer "oil to gas" to improve the explosion-proof capability of equipment.

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Bozhou Power Supply: The First Explosion-proof Current Transformer Operated in 220 kV Woyang Transformer Network

In order to implement the pilot work, Bozhou Power Supply Company plans ahead of time, formulates an annual maintenance plan, tracks the production cycle and defines the installation time. Do a good job in site investigation, personnel access and other safety work requirements, compile the examination and approval of maintenance plans, pay special attention to the quality of construction technology, to ensure the smooth operation of the first explosion-proof current transformer of the national network in Bozhou 220 kV vortex yang transformer network.

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