Many years of operation experience at home and abroad shows that DC voltage withstand test is not suitable for rubber plastic power cable in handover or preventive test, and AC voltage withstand test (frequency range 30-300hz) should be used to ensure the safe movement of cable. This is an epoch-making…

[Abstract]: distributed access and centralized access also play an important role in the wind power well network. In this paper, two kinds of access modes are analyzed effectively, and the influence of wind power access on the relay protection of power grid is studied effectively.   [Key words]: wind power…

Abstract: with the rapid development of China's power industry, smart grid has become an important part of the development of the power industry. Firstly, the smart grid is described; secondly, the characteristics of smart grid technology are analyzed; finally, the application of smart grid in power technology and power system…

Transformer is the heart of the power supply and distribution system, which transforms high-voltage power into low-voltage power for daily use. Transformer installation is also the most important part of the whole power installation project. To ensure the quality of transformer installation is very important for the stable operation of…

Insulating oil dielectric strength tester is an advanced instrument and equipment designed and developed in accordance with the requirements of national standards. It has many advantages, beautiful appearance and convenient operation. Today, it is welcomed by users to introduce the function of insulating oil dielectric strength tester.   1. The…

How to choose frequency conversion series resonance?       Nowadays, a lot of power industry related manufacturers will use series resonance tester, so we must compare and inspect the market of series resonance sales. Here, Zhizhuo measurement and control recommends you to choose famous large factories, so that they…

I. selection of high voltage circuit breaker - type and type       The type and type of high-voltage circuit breaker shall be selected according to the installation location, environment and service conditions of the circuit breaker. Vacuum circuit breaker has been widely used in 35kV and below power…

1. Inspection of iron core and clamp       The core of the transformer shall have sufficient mechanical strength. The mechanical strength of the iron core is guaranteed by the strength of all clamping parts on the iron core and their connecting parts. When the winding generates electric power,…

Substation   Power is transmitted through a power transformer. In the power system, the process of transforming the voltage from low level to high level (step-up) or from high level to low level (step-down) through certain equipment. Generally, the rated voltage of generator in power system is below (15-20) kV.…

Wuhan Zhizhuo measurement and Control Technology Co., Ltd. solves the problem that the test results of transformer tester cannot be saved   Problem Description: The analyzer startup process is normal, the test process is normal, and the test results are normal, but the test results cannot be saved, nor can…