چكيده به لاتين
Measuring electrical current is an important principle in high pressure substations. Conventional substations use current transformers with magnetic cores, which have many operating limitations. The use of current transformers based on Optic technology brings many advantages such as no core saturation, high accuracy in a wide dynamic range, safety against electromagnetic interference and light volume and weight. With the development of smart grids and the success of OCT test results that have been installed around the world, we should soon see the technology being replaced in the electricity industry. However, not paying attention to the adverse effects of OCT reduces the accuracy and reliability of the optical current transformer, and only by compensating for common OCT errors can be achieved the long-term stability against the factors limiting the accuracy and reliability of the optical current transformer. In this Thesis, with the aim of providing the necessary basis for the internalization of this technology in Iran, the first steps have been taken to introduce this technology and identify the factors limiting its accuracy. Therefore, in order to achieve the desired accuracy within the framework of international standards, solutions have been proposed to reduce or compensate for common OCT errors. In this Thesis, for the first time, with the approach of introducing the effective parameters in the selection of OCT, the instructions for selecting the optical current transformer for the respected experts and researchers of the electrical industry, who will soon face the issue of using this technology, are discussed.
