Power systems research and operation : selected problems

Description

Preface Contents Decentralized Market Coupling with Taking Account Power Systems Transmission Network Constraints 1 Introduction 2 Network Congestion Management Constraints in the Context of European Electricity Market Coupling 2.1 Flow-Based Market Coupling Mechanism 2.2 Decentralized Market Coupling Concept 3 New Approach to Decentralized Market Coupling Taking into Account Power Systems Network Constraints 3.1 Universal Mathematical Model of Net Export Curves 3.2 Concept of Development of Decentralized Market Coupling and Method of the Optimal Volume Electricity Exchange Determination to Minimize Prices in Coupled Markets 4 Example of Assessing the Feasibility of Integrating a Separate Price Zone of the Ukrainian Power System into the European Electricity Market 5 Conclusions References Improving the Reliability and Power Quality in Distribution Networks with Sources of Dispersed Generation 1 Introduction 2 The Main Ways to Improve the Reliability of Power Supply in Distribution Networks with Dispersed Generators 3 Improving the Efficiency of Distribution Network Operation When Using Dispersed Sources of Generation 4 Formation of “Soft” Points of Disconnection of the Distribution Network Circuits to Ensure Reliable and Efficient Operation of Power Distribution Systems with Dispersed Generation Sources 5 Conclusion References Some Features of Electromechanical Oscillations Modes Identification in Power Systems 1 Introduction 2 Methods’ Testing and Selection to Identify LFO Modes in Real-Time. Identification Results Generalization 3 Two Examples of Electromechanical Oscillations’ Modes Identification Using PMU Data 4 Conclusions References Hybrid Diagnostics Systems for Power Generators Faults: Systems Design Principle and Shaft Run-Out Sensors 1 Introduction 2 Current State of Power Generators in Ukraine 3 Design Principle of Hybrid Faults Diagnosis System in Power Generators 3.1 Hybrid Faults Diagnosis System Architecture 3.2 Microelectronic Components Work Principle 3.3 Power Optoelectronics Components Work Principle 3.4 Software Solution Work Principle 4 Capacitive Shaft Run-Out Sensors for Diagnostics Shaft Faults in Power Generators: Work Principle and Characteristics 4.1 Sensors Located and Construction 4.2 Determination Sensor Response Characteristic 4.3 Sensor Temperature Stability 4.4 Sensor Electromagnetic Stability 4.5 Technological Factors Influence on Capacitive Shaft Run-Out Sensor Characteristics 5 Conclusions References Operating Modes Optimization of Bulk Electrical Power Networks: Structural and Parametrical Methods 1 Introduction 2 Development Technical and Economic Analysis Methods for Comparison Measures and Technical Means of the Bulk Electrical Networks 3 Assessment of the Efficiency Reducing the Active Power Losses in Electric Power Transmission Lines by Structural Means 4 Optimization of Bulk Electrical Networks Operating Modes by Controlled Lateral Compensation Using 5 Analysis and Optimization of Power Systems Operating Modes According to the Minimizing Criterion of Active Power Losses 6 Conclusions References Short Term Renewable Energy Forecasting with Deep Learning Neural Networks 1 Introduction 2 Mathematical Models of Wind and Solar Plants for Generation Forecasting 3 Forecasting Using Deep Neural Networks 4 Model Evaluation 5 Conclusions References Grids Transfer Capacity: Calculation Methodology and Features 1 Introduction to the Grid Transfer Capacity Problem 2 Voltage Stability and Features of Calculation of Total Transfer Capacity of Interfaces 2.1 Methodology for Determining the Limits for Aperiodic Static Stability of Power System Regimes in the Time Frame of Power System Operational Control 2.2 Introduction to Voltage Stability 2.3 Voltage Stability Indicators for TTC Calculation 3 Methodology of Calculation of Grid Transfer Capacity 4 The Sensitivity of Grid Transfer Capacity to Various System Parameters 4.1 The Sensitivity of TTC to Consideration of PQ-Characteristics of Generators 4.2 Different Approaches to Build of Weighing Trajectory for TTC Calculation 4.3 Example of Grid Transfer Capacity Calculation 5 Automated Procedure of Identification of Allowable Transfer Capacity and Other Control Data for TSO References Frequency Stability of the Bulk Isolated Power System with a High Share of Renewables and Nuclear Generation 1 Introduction 2 Frequency Characteristics Identification of the Power System 3 Development of the Local Load–frequency Controller Considering the Impact of the Renewables 4 Frequency Stability Simulation Considering the Operation of the Under-Frequency Load Shedding Relays and Special Protection Automatics of the Nuclear Power Plants References