Ruslan A. Ufa

A Hybrid Simulation Model for VSC HVDC

The motivation for the presented research is based on the needs to develop new methods and tools for obtaining the information required to evaluate the mutual influence of HVDC and HVAC systems. This paper presents the specialized concept of a hybrid simulation for advanced modeling of VSC HVDC. The results obtained by the prototype of specialized hybrid processor of VSC HVDC model confirm the effectiveness of the proposed approach with respect to the detailed representation of commutation process of real power semiconductors and possibility of real-time simulation of all the processes in VSC and EPS as a whole without any decomposition and limitation on their duration.

Development of hybrid model of STATCOM

The results of analysis of main trends in simulation of Flexible Alternative Current Transmission Systems as well as the challenges of their adequate simulation are presented in this paper. The necessity of development of new methods and tools for retrieval of information required for evaluation of mutual influence between Flexible Alternative Current Transmission Systems and alternating current systems is shown. The concept of hybrid simulation for designing of Static Synchronous Compensator model as the most functional devices of Flexible Alternative Current Transmission Systems technologies and their simulation result are given in the paper. The obtained results prove the advantages of hybrid simulation approach for continuous three-phase real time simulation without decomposition of processes on an unlimited interval in the Static Synchronous Compensator model for implementation in large power system models.

Hybrid real-time simulator of power system for advanced simulation of the FACTS and HVDC system based on voltage source converter

The motivation of the presented research is based on the need to develop new methods and tools for obtaining information required to evaluate mutual influence between high voltage direct and alternating current systems. This paper presents a specialized concept of hybrid simulation for advanced simulation of the Flexible Alternating Current Transmission System (FACTS) and High Voltage Direct Current Transmission System (HVDC) based on Voltage Source Converter (VSC). The presented simulation results of the developed hybrid model of VSC confirm the achievement of the desired properties of the model and the effectiveness of the proposed solutions.

Advanced Simulation of the Power Electronic Converters of VSC FACTS and HVDC in Hybrid Real Time Simulators of Power System

The present paper focuses on simulation of VSC (voltage source converter) based on FACTS (Flexible Alternating Current Transmission System) and HVDC (High Voltage Direct Current) transmission technologies. Particular attention is paid to hybrid real-time simulation approach which provides adequate and comprehensive modeling of electric power systems (EPS), containing FACTS and HVDC. The results of experimental research support the necessary level of adequate simulation of commutation processes and suitability of the presented concept and simulation tools for effective solution of research and development tasks of effective use of HVDC and FACTS devices in EPS.

Detailed simulation of distance protection for its testing and setting

Abstract A significant part of severe accidents (blackouts) in electric power systems (EPS) is associated with incorrect operation of relay protection and automation (RPA). One of the main reasons for the incorrect actions of the RPA devices is its rough settings, which often does not correspond to the real operating conditions for specific device. An analysis of currently used methods and tools for RPA setting up, shown that they are largely relied on the guidelines of previous decennaries. Respectively modern techniques have the same drawbacks associated with accounting the processes in specific RPA and primary transducers and its errors by approximate coefficients. It is possible to solve the indicated problem with a highly detailed analysis of the operation of key elements of RPA schemes in the specific operating conditions. The obtained results allow to estimate the processes in protected objects, processing errors in instrumental current (ICT) and voltage (IVT) transformers, as well as in RPA itself. Such possibility could be achieved by the detailed RPA mathematical modeling. The combination of an adequate EPS simulator and RPA models allows configuring parameters of the RPA settings ensuring its correct operation in real EPS. The article presents result of this research for distance protection

Development of hybrid model of B2B HVDC

This paper presents some results of development of model of high voltage direct current system back-to-back link. The model based on concept of hybrid simulation, comprising three level of simulation: physical, analog and digital. The obtained results, including steps on the regulation references, recovery from severe perturbations in two-machine alternative current networks and ect, prove the advantages of hybrid simulation approach for comprehensive analysis of electric power system, including of flexible alternative current transmission systems devices and high voltage direct current technologies.

Hard- and software simulation tools of emergency control system of turbine frequency and power regulators

The paper discusses the modeling of emergency control system of turbine frequency and power regulators using a hybrid real time simulator of electric power system. It presents the results of pilot simulation of frequency and power regulators ensuring dynamic and static stability in an electric power system.