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Power Systems

The team consists of six members professor Dr.Sc., two assoc. professors, chief assistant, assistant and a PhD student. The main fields of competence of the team are:

- Calculation and analysis of:

  • steady states: voltage levels; advisable tap positions of network transformers; power and energy loss in transmission and distribution networks; advisable reactive power compensation;
  • emergency states: short circuits;interruption of phase lines; complex complex types of faults, including in wind and photovoltaic power plants;
  • optimal settings of AVR and PSS;
  • small-signal stability of electric power systems;
  • transient stability of electric power systems;
  • robust stability of electric power systems;

- Preproject study and design of:

  • underground and overhead lines up to 400 kV;
  • transformer substations up to 400 kV.

- Design of specialized software in the field of electric power engineering;

- Consultations and trainings in the field of electric power engineering.

Some of the more important projects the team has worked on are:

  • Improvement of the frequency control of the Turkish Electric Power System for synchronous operation with UCTE –contractorESO EAD
  • Analysis of the small-signal stability of the new and old part of NPP „Kozloduy” – contractorNPP „Kozloduy”
  • Analysis of the power system stabilizers PSS-2A in AES-3C Maritza Iztok 1 EOOD power plant by a detailed mathematical model and proposal of new settings which will damp better the electromechanical oscillations in the generators – contractorAES-3C Maritza Iztok 1 EOOD
  • Development of scientific methodology and software tool for determination of the appropriate settings of Automatic Voltage Regulators (AVR) and Power System Stabilizers (PSS), installed in Bulgarian power plants – contractorNEK EAD
  • Functionality extension of the software tool NASAVR for calculation of the parameters of AVR and PSS – contractorNEK EAD
  • Training of dispatchers from the National and the Territorial Dispatching Centers on the subject „Modern methods for modeling and analysis of electrical power systems transient processes in MATLAB environment“ – contractorESO EAD
  • Representation of wind farm „Sveti Nikola”as equivalent synchronous generator for the purposes of calculation of short circuits contractorAES GeoEnergy EOOD
  • Representation of wind farm „Vetrokom”as equivalent synchronous generator for the purposes of calculation of short circuits
  • Representation of PV farm „Samovodene”as equivalent synchronous generator for the purposes of calculation of short circuits
  • Analysis of the operating states of the 110 kV network, owned by Mini Maritsa Iztok EAD, and of the supplying generators under conditions of compensation of reactive power – contractorMini Maritza Iztok EAD
  • Study and analysis of the problem with increased reactive power of TRLK Vyrbitza after the change of the commercial metering point and proposition of measures for overcoming the problem – contractorBulgarian Air Traffic Services Authority
  • Analysis of the conditions for automatic power supply backup of substation 223 ­– contractorNeftohim AD
  • Analysis of the MV distribution network of NEK EAD, Dobrich region – contractorNEK EAD
  • Forecasting and planning of electricity losses in low voltage distribution networks – contractorEnergoproekt
  • Temporary scheme for power supply of the consumers "Airport Radar", "Condition Main Hall", "Main Control Room" and "Boilers" from 20 kV network and diesel-generator C 1250 – contractorBulgarian Air Traffic Services Authority
  • Calculation of the overvoltage levels and currents for short circuits to ground in substations „Staro Orqhovo” and „Dolen Chiflik” – contractorNEK EAD
  • Calculations of short circuits to ground in cable MV distribution network in substation “Shumen-1” and consultations on the methodology of calculation – contractorNEK EAD
  • Preparation of expert assessment the state and allowable operating conditions of diesel-generator C 1250 – contractorBulgarian Air Traffic Services Authority
  • Software for automated design of the mechanical part of 20 kV overhead lines – contractorNEK EAD
  • Design of transformer substation 20/6/0,4 kV for emergency water supply from artificial lake "Conevo" of Varna city and region – contractor ViK OOD
  • Design of the electrical part of the project "Expansion – new production buildings in III-"Dekaba", .14, 26- , Varna" – contractor Mauer Locking Systems OOD
  • Installation for grinding of coal and petroleum coke in plant "Vulkan" – contractorET Simenoni

Contacts:

Team leader: Prof. DrSc Eng. Math. Krum Kostov GERASIMOV
Address: Studentska Str 1, 330NUK
9010 Varna
Tel.: +359 52 385 702
+359 898 804 113
e-mail: [email protected]

 


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