A knowledge-based company has produced an efficient tap changer that reduces the risk of mechanical failures and explosions in power transformers.
The domestic firm, active in developing advanced technologies in the electricity industry, has produced a device superior to its foreign counterparts by improving the technology of this essential part used in transformers, according to the CEO of the Urmia Advanced Transformer Systems Company.
“One of the company's products is the tap changer or the electrical voltage changing device in transformers,” Kheirollah Hadidi was also quoted as saying by the news portal of Vice Presidency for Science and Technology.
The transformer is one of the main components of power systems and its main task is to change the voltage level. It operates on the mutual induction principle and only on an AC power supply. Since there are no rotations or moving parts in the device, transformers belong to the group of static devices.
“By changing the number of turns of coils in transformers, the output voltage can be adjusted, and this issue is done by tap changers in transformers,” he added.
Hadidi noted that classic tap changers work like a similar system used in cars.
“This technology also has its drawbacks. About a third of the explosions of electricity transformers are related to the malfunction of tap changers because they perform the switching action in a fully mechanical, spring-loaded and very fast way. In this process, many mechanical delays occur,” he said.
The knowledge-based company has eliminated the problems of the previous model and works much more efficiently.
Urmia Advanced Transformer Systems Company has undertaken the production project in cooperation with government institutions.
According to Hadidi, the product has a high export potential, in addition to preventing the outflow of foreign currency needed for import.
Troubleshooting Electric Device Helps Cut Energy Wastage, Costs
A domestic knowledge-based company has produced an electric motor control device that can be used to troubleshoot power lines and motors, which helps reduce energy wastage and costs.
An electric motor control device is the main tool for undertaking predictive repairs and preventing unwanted outages caused by errors in motors used in industrial electric drives, according to a member of the Board of Directors of Yekta Behineh Tavan Company (aka Yekta Behin).
“Electrical analysis, insulation test, thermal analysis and thermographic analysis are among monitoring methods that prevent the failure of transmission lines,” Reza Mehri added.
Motor control devices are regulated in a manual, automatic, or remote manner. They can be used for starting or stopping a motor attached to a machine, apart from serving several other purposes such as condition monitoring. These controls are categorized according to the type of motor they are designed to operate.
Condition monitoring observes motor current and voltage signals, as well as thermography and mechanical vibrations.
Each of the common mechanical and electrical defects of electric motors and power lines has a specific effect on the measured waveforms and can be identified by analyzing the waveforms.
The electrical monitoring of electric motors records the current and voltage of the stator phases and analyzes its characteristics, making it possible to identify most of the common faults in electric motors and power lines.
By using the troubleshooting technique, it is possible to identify the defects in the rotor, stator, air gap and other mechanical parts, and prevent further damage. For this purpose, the current and voltage behavior of the motor in different working conditions are recorded and data are analyzed.
By using troubleshooting, it is possible to identify broken or cracked rotor bars, check the condition of wound rotor motors and stator core, in addition to solving winding and insulation problems.
Noting that Yekta Behin has created 12 direct jobs, Mehri said the company has been able to meet the country’s needs and save foreign currency by preventing the import of foreign counterparts.
Versatile Software Designed for Smart Reading of Energy Meters
A domestic knowledge-based company has designed specialized software and hardware for efficiently reading water, electricity and gas meters, and reducing the time and manpower required conventionally.
By implementing the smart aggregation of readings from energy meters, the need for human and financial resources, as well as waste of time, is reduced, according to the CEO of Arayeh Chin Mehr Azar Company Morteza Maqsoudi.
“For years, water, electricity and gas companies have been sending agents to read the meters installed in homes and offices which, at times, give rise to significant human errors. These errors invariably violate the rights of both consumers and companies,” he added.
He explained that the readings are summarized by energy companies, giving rise to a large volume of information with little efficiency.
The CEO said the company’s software and hardware have helped reform this time-consuming procedure in several Iranian provinces.
Maqsoudi noted that an agent can read the gas, electricity and water meters by installing software on their phones, which information is transferred online to the central server of the companies concerned by using the necessary hardware.
“In this method, a much larger volume of information is collected compared to the old method. It is also possible to analyze the data gathered through this method. For instance, the electricity company can categorize low- or high-consumption subscribers and apply incentives or penalties as per their consumption patterns,” he said.
The knowledge-based firm has also presented a plan whereby information required by gas, electricity and water companies could be read at the same time by using its hardware and software. As only one agent reads all three meters, much lower manpower and resources are required.
Maqsoudi stated that the use of technology could transform the traditional way in which Iranian service companies have been operating in the same old way for years.
