Grid impact study of the Combined Cycle Power plant (CCPP) in Mubarek


A Korean construction group is considering located the Mubarek Combined Cycle Power plant (CCPP) in Qashqadaryo region of the Republic of Uzbekistan. The Qashqakadaryo is located south part of Uzbekistan. The total installed capacity envisaged for the CCPP plant is  around 300 MW.

The CCPP Plant is planned to connect to existing 220kV transmission network with 3 feeders.

In order to dispose of all technical information so as to avoid any potential grid problems, the client wanted a complete impact study of the Mubarek CCPP on the Uzbek national grid.

The Korean construction group called upon UzAssystem to take care of this grid impact study.


2 DigSILENT models have been created. First model is design of 385 MVA Siemens SCC5 4000 Gas Turbine and 210 MVA Steam Turbine regarding to design of 450 MVA CCPP plant design. Second model is design of 2 pieces 190 MVA GE 9E.04 Gas Turbine and 165 MVA Steam Turbine. And in each model 300MW loading condition are evaluated.

The purpose of the studies is to:

check the system behavior and loading of the step-up transformers and transmission lines

check the voltage profiles of the buses, transformers and cables

check short circuit levels for ensuring switchgear ratings are sufficient with respect to fault levels

check power quality of the system

check harmonics flow, load unbalance and voltage flicke

The DigSILENT is a software solution providing highly services in the field of electrical power systems for transmission, distribution, generation, industrial plants and renewable energies.

Clients Benefits

To show the impact that Mubarek CCPP location and installed capacity will have on the grid

To show how the network will operate, providing load-balance analyses and identifying any risks or gaps that present a risk to the network.

To anticipate the behavior of the system and of its equipment

To investigate N-1 and N-2 contingency cases, short circuit analysis and transient analysis for the most reliable connection possible



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Million €

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