New substation will improve power supply reliability in Khromtau
220/110/6 kV Kromtau substation was built as part of the program to expand power supply. Advanced technologies were used for construction, both in terms of equipment and automation and control. All automation was implemented using Siemens equipment.
At present, the main existing substation of Donskoy GOK provides power for the entire region, and another line runs towards Aitekebi and Irgiz. The new substation has 125 megawatts capacity. As an example, it can provide power to several more areas. Now, according to the plan, power consumption of Donskoy GOK should be about 80 megawatts of permitted capacity. This is sufficient for the uninterrupted power supply of Khromtau, the region, and new production facilities.
- Earlier, power was supplied from Kempirsay substation, which was the only supplier for the entire region, Pavel Konyakhin, Chief Power Engineer of Donskoy GOK, notes. Power was supplied via three lines to Donskoy GOK. After the substation was put into operation, a new power source appeared—an extra 220 kV line from Ulke substation to Khromtau substation. Now, even if Kempirsay line will shut down, we can still provide power to the community and industry.
With the launch of new industrial sites at Donskoy GOK, the existing capacity from KEGOK and the power system would be insufficient. Increasing capacity will make it possible to operate without the risk of reducing the reliability of the entire power system.
“Electricians from Donskoy GOK electrical workshop will provide round-the-clock service at the new substation,” Gani Ermanov, Head of the Electrical Workshop notes. “We have qualified engineers and technicians for complex works”.
The substation is intended for the future development of Khromtau wind farm, which is under construction by ERG.
The project's goal has been achieved: ensuring uninterrupted power supply to DGOK in full volume up to 84 MW and the possibility of additional power supply to KEGOC JSC grid up to 200 MW, including from WPP with 150 MW installed capacity.
