Abstract
In modern conditions, when there is a mass construction of small power plants based on renewable sources, the installation of power storage devices is gaining pace, consumers ' electrical installations are being modified, they are becoming adaptive and intelligent, there is a process of mass appearance of electric vehicles, and a revision of traditional provisions in the field of system reliability of power systems is required. Scientific research in the field of EPS flexibility has recently been intensified, and this flexibility is considered in a fairly broad setting. It is important to note that the issues of EPS flexibility are not new, but the term “flexibility” was not used to refer to this issue before, although all the main issues were considered within the framework of the topic of system reliability and development of EES, and the issue of continuity of modern research with previous scientific research and existing scientific results is important. Traditionally, one of the aspects of system reliability has been the power security of the EPS, which refers to the ability of the system to withstand sudden disturbances without unintended impacts on electricity consumers. At the same time, the analysis of power security was mainly performed only in the volume of the system-forming power gird of the EPS. For the power systems of the future, the importance of power security increases significantly, but as an analysis of the power security of the system-forming and distribution power grids together.
Highlights
Introduction and problem statementRecently, scientific research in the field of Electric Power System (EPS) flexibility has been intensified, and this flexibility is considered in a fairly broad setting [1, 2]
In modern conditions, when there is a mass construction of small power plants using renewable energy sources, the volume of installation of power storage devices is increasing, consumer electrical installations are changing, there is a process of mass appearance of electric vehicles, and it is necessary to review traditional provisions in the field of system reliability
The authors made the following conclusions: 1. The task of ensuring EPS flexibility is a development of the traditional tasks of ensuring system reliability
Summary
Scientific research in the field of Electric Power System (EPS) flexibility has been intensified, and this flexibility is considered in a fairly broad setting [1, 2]. In the traditional electric power industry, the main emphasis in the field of system reliability of power plants was placed on the maneuverability of highcapacity generating equipment and sufficient reserves of capacity of inter-system and intra-system main power grids. Unscheduled deviations from the forecast mode were predictable, because the main reason for them was an emergency shutdown of equipment, which allowed us to normalize such perturbations (normative perturbations in stability analysis [9]), and allowed us to apply the rich experience of studying the hardware reliability of elements of the EPS [10]. The annual load schedule of the unified power system of Siberia for 2019 (Fig.1) does not contain any significant spikes, neighboring days have a similar load. Despite the fact that these days were in different years, the load schedules are very similar, so even without using mathematical forecasting methods, last year's daily load schedule can be used with acceptable accuracy for subsequent years
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