Mikhail Andreev

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.

Platform based on Hybrid Real-Time Power System Simulator for development and research of Intelligent Power Systems with active-adaptive networks

This paper reveals the application of the Hybrid Real-Time Power System Simulator (HRTSim) as a universal hardware and software platform for developing solutions to design and research of Intelligent Power Systems with active-adaptive networks. Also, features of HRTSim and experience of its application for solving tasks of development of methods and tools for control of regimes in Intelligent Power Systems with active-adaptive networks are briefly described in the paper.

Application of Hybrid Real Time Simulator for solution of Smart Grid tasks on the example of Elgaugol energy cluster pilot project

This paper describes hardware and functional features of Hybrid Real Time Simulator (HRTSim) of electrical power systems, also its application for solution of Smart Grid (SG) tasks concerned with active adaptive networks (AAN) construction. As an example of such task solution the working results of HRTSim implementation and its application for testing and setting up of active-adaptive voltage and var control system (AAVVCS) of regional Smart Grid are presented.

Simulation of automatic exciting regulators of synchronous generators in hybrid real-time power system simulator

This paper presents the features of the implementation of automatic exciting regulators (AER) models in the Hybrid Real-Time Power System Simulator (HRTSim). This simulator has unique abilities: simulation without decomposition, no restrictions on the dimension of the simulated power system, realtime simulation, exclusion of methodological error of simulation, usage of full and adequate models of primary and auxiliary power system equipment. These features allow using HRTSim for a variety of tasks in the energy sector. The article presents fragments of AER research and setting in Tomsk power system with using of HRTSim.

Application of Hybrid Real-Time Power System Simulator for Designing and Researching of Relay Protection and Automation

Development, research and operation of smart grids (SG) with active-adaptive networks (AAS) are actual tasks for today. Planned integration of high-speed FACTS devices greatly complicates complex dynamic properties of power systems. As a result the operating conditions of equipment of power systems are significantly changing. Such situation creates the new actual problem of development and research of relay protection and automation (RPA) which will be able to adequately operate in the SGs and adapt to its regimes. Effectiveness of solution of the problem depends on using tools - different simulators of electric power systems. Analysis of the most famous and widely exploited simulators led to the conclusion about the impossibility of using them for solution of the mentioned problem. In Tomsk Polytechnic University developed the prototype of hybrid multiprocessor software and hardware system - Hybrid Real-Time Power System Simulator (HRTSim). Because of its unique features this simulator can be used for solution of mentioned tasks. This article introduces the concept of development and research of relay protection and automation with usage of HRTSim.

Application of hybrid real-time power system simulator for setting up and close loop testing of protection and control equipment

This paper presents new tool for setting up and comprehensive close loop testing of protection, automation and control equipment (PACE). The role of this tool for Smart Grid (SG) design process is also described. Comprehensive close loop tests of PACE in power system (PS) various regimes with consideration of possible interactions between tested equipment and other automation are possible only with the use of real-time software and hardware simulators. But digital simulators are based on numerical methods of integration and therefore impose constraints on differential order and stiffness of a mathematical model of PS. Besides, each step of differential equation integration causes the error which is accumulated and cannot be eliminated. Because of this a simulation time is very restricted and simulation itself can never be continuous. New capabilities are provided with the use of a hybrid simulation concept which has no mentioned limitations. The concept of hybrid simulation was created at Tomsk Polytechnic University and became a base for construction of Hybrid Real-Time Power System Simulator (HRTSim). HRTSim is a multipurpose tool suitable for various power engineering tasks, among which are PACE setting up and testing. Practical results of HRTSim application in the Tyumen PS are presented in this paper. HRTSim was used there for testing and setting up of momentary and sustained fast turbine valving control (FTVC) systems of the generating unit of the Surgut co-generation power plant.

Universal mathematical model of three-phase electrical transmission lines

Basis and synthesis of electrical transmission lines mathematical model, which allows reproducing the whole range of both normal processes and fault within three-phase electrical transmission lines of different length, taking into consideration electromagnetic influence of parallel chains and probable corona effect are considered.

Decision Support System Based on the Concept of Hybrid Simulation for Dispatching Personnel of Electric Power Systems

This article summarizes the results of an analytical review of usage in Russian and the world information and telecommunications decision support systems for dispatching personnel of electric power systems (ITDSS DP EPS). The need for a fundamentally new and effective ITDSS DP EPS has been identified. A comparative evaluation of the effectiveness of the possible directions of research in the field of ITDSS DP EPS has been done. As the key methods for development of ITDSS DP EPS the numerical and hybrid approaches to electric power system (EPS) simulation were highlighted. Theoretical substantiation of unacceptability of the first variant allowed choosing the hybrid approach as a major which allows developing and applying the most effective methods, ways and means for every significant aspect of the problem of creation of ITDSS DP EPS. In accordance with this approach, two possible constructions of ITDSS DP EPS have been proposed, discussed and described briefly in the article.

Testbed Based on Hybrid Real-Time Power System Simulator for Setting up and Testing of Protection and Control Systems

In this article we will focus on creating of testbed based on hybrid real-time power system simulator (HRTSim) for setting up and testing of relay protection (RP), automatic (AS) and control systems (CS), as well as the opportunities and prospects of its application. The simulator has physical outputs, which allows using it for close-loop testing of RP, AS and CS. Physical currents and voltages generated in the simulator during a simulation process can be transmitted to the analog inputs of tested device by means of external amplifiers. There are no restrictions on the dimension of the simulated power system and time interval for HRTSim. These opportunities and usage of adequate models of primary and auxiliary power system equipment allows reducing the number of possible equivalenting and creating as closely as possible to the real conditions for setting up and testing of any RP, AS and CS, including wide-area protection and control systems.

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