Search

An integrated energy system is a complex technical object, digital twin technologies improve the quality of its design and management. The paper proposes a methodological approach to the development of a software platform for constructing a digital twin of the integrated energy system and solving a set of problems that arise during system design and management. The Model-Driven Engineering (MDE) concept is implemented to automate the stages of a digital twin construction based on the platform. A three-level architecture of a network multiuser software system is proposed. An algorithm used for automated construction of a digital twin of the integrated energy system is presented.

Active promotion of digital technologies in the energy sector requires a change in the principles of building energy systems, as well as the concept of their expansion planning. The functioning of infrastructural energy systems that are transforming as a result of the innovative development is fundamentally impossible without advanced information and communication technologies and intelligent digital tools. Energy systems are becoming sophisticated cyber-physical systems. At the same time, the problems of cybersecurity are exacerbating. The joint functioning of several types of energy systems in the form of a single integrated energy system provides new functional capabilities. The use of digital technologies in integrated energy systems provides the collection, processing, transmission and representing of information on all components of the system regarding all aspects of integration. Digitalization of integrated energy systems is carried out in the following two directions: application of digital technologies for individual subsystems for the purpose of their control; the use of digital technologies for technical and technological integration solutions in order to ensure coordination of subsystems and the implementation of system-wide goals. The adoption of digital technologies in integrated energy systems contributes to the organization of flexible, coordinated control of the expansion planning of such systems.

The paper presents a new methodological approach to developing a universal platform for the design of district heating systems. The reasons for the development of the platform are considered and a scientific statement of the problem is given. The main methodological results obtained during the development of the platform are presented. The description of the scientific and practical significance of the results is given. A new methodological approach was developed using modern information technologies. The methodological approach is based on the paradigm of Model-Driven Engineering. The essence of this paradigm is that the software is generated on the base of formal description provided by the models. The proposed approach allows one to successfully solve the problem of separation of methods for solving applied problems and models of elements of a district heating system. The paper describes the developed architecture of the software platform. A description of the architectural subsystems of the platform is presented: the computing subsystem and the graphics subsystem.

Modeling of intelligent integrated energy systems, which has a complex structure, is performed using specialized software, which is caused by the computational complexity of the models, methods and algorithms used. The paper lists the requirements for software for modeling intelligent integrated energy systems and concludes that it is necessary to develop a technological platform. A methodological approach to the development of a technological platform for modeling integrated energy systems is presented. The methodological approach includes the following components: principles of building a technological platform, architecture of a technological platform, and the structure of an ontology system, a method of automated integration of software components into a software system.

The problem of optimizing the transmission capacity of a pipeline network is important for ensuring its operability. The problem arises at different stages of the network life cycle (design, optimization, development). The problem is to determine the diameters of the pipelines, the locations of the pumps and the heads on them, the locations of the regulators (flow and pressure) and their parameters. The article proposes a new algorithm based on dynamic programming, which implements an original approach to organizing a computational procedure. The general principles of the algorithm and the content of its steps do not depend on the purpose of the network and the composition of its equipment. The algorithm is versatile and allows one to optimize networks for various purposes. The proposed algorithm is implemented in the IRNET software. On its basis, calculations were made for the development of real district heating systems.

The conversion of existing energy systems to intelligent integrated energy systems can happen only if economic benefits due to introduction of the intelligent integrated energy systems will exceed required level of investments. Thus, it is necessary for every optimal design energy systems problem according to the purposes of the study to determine various aspects of equipment configuration, investment and a proposed unit commitment on a case-by-case basis. The studies, taking under consideration energy efficiency of renewable energy units, are particularly important as environmental safety standards are increasing. In the paper optimal design of prosumer energy supply system problem in the intelligent integrated energy system was investigated. For this purpose a super structure for an energy supply system includes different generating capacities with relevant power range. The superstructure for prosumer energy supply system consists of an electric boiler, a gas-fired boiler, a solar photo-voltaic, a solar heating system and a gas-fired CHP. An ability of district energy system to receive the excess generating energy is restricted by the constraints. The heat and electricity tariffs and the received to district energy supply system energy constraints are varying according to time period. As a result of this study, cost-effectiveness analysis of chosen equipment configuration was undertaken.

The optimization of heat sources in populated areas is associated with the optimization of their structure. The optimization problem is of linear discrete nature and is hard to formalize [1]. The aim of the optimization is to identify the types, sites and mix of equipment of the heat sources. Moreover, this optimization problem is closely related to the scheme and parameter optimization since the equipment mix of heat sources and their connection to existing (newly constructed) consumers determine the heat network configuration. The emerging new trends in the technological development of heating systems require a significant correction of stating and solving typical technical and economic problems to design these systems, which, in turn, predetermines the transition to a new level of their methodological support [2]. The paper proposes a mathematical formulation of the problem of optimal development of heat sources and considers a methodological approach to solving it, including effective load distribution between heat sources, and calculation of the optimal heat network configuration, given the minimum environmental impact of heat sources.

The integration of many energy systems of various types (electricity, heat, cooling, etc.) into a single technological entity involves the use of new information and communication technologies and a holistic multi-level automated control system, which provides the establishment of integrated intelligent energy systems. In such systems, the consumer can both provide themselves with various types of energy, and supply energy into the energy system. The paper presents a methodology for modeling the prosumer in intelligent integrated energy systems. The methodology includes the following components: a mathematical model of the prosumer in intelligent electricity, heat/cooling systems; a method of choosing the energy sources to cover their load with minimal costs of electricity, heat/cooling generation. The methodology developed for modeling the, prosumer in intelligent electric, heat/cooling systems was implemented in software. The presented results are tested on a test energy supply scheme.

The paper is concerned with the specific features of Russia’s economic development in a new economic environment that caused the need to revise the priorities of energy policy. The research presents the initial conditions, targets and strategic directions of energy development in the East of the country. The focus is made on the priority lines of innovation and technology cooperation between Russia and Northeast Asian countries in the field of energy, and recommendations on necessary conditions and initiatives for their successful implementation are given.

At present, there is a growing need to solve the design problem of the hydraulic circuit of an intelligent heating system with the required transmission capacity, hydraulic stability and reliability indices. The paper proposes a mathematical statement of the design problem of such a hydraulic circuit and an original methodological approach to solve it by decomposing a general complex problem into several simpler ones (of a smaller dimensionality). The proposed approach makes it possible to tailor the computational procedure to specific features of a heating system to be modeled.