As a result of R&D, a measuring system for controlling the thickness of the HDPE/LDPE (high-density polyethylene/low-density polyethylene) polymer geomembrane was developed using automation equipment. The relevance of this work consists of the development of a domestic, relatively inexpensive system for controlling the thickness of the HDPE/LDPE polymer geomembrane in production conditions based on modern equipment for enterprise automation. The scientific novelty consists of the use of original design solutions in the development of hardware and software complex mechanisms that allow controlling the thickness of the HDPE/LDPE polymer geomembrane layers along the entire width of the shaft, excluding deformation of the film as a result of foreign bodies entering during extrusion, cuts, monitoring the quality of the film in real time, as well as the possibility of analyzing the measured parameters in the database of the automated system.

The authors develop standards and design of pre-emergency, emergency and post-emergency control of mine technological environment and electric machinery activity. The electric machinery operation parameters to be controlled are energy supply of explosion-proof electric machinery, cable integrity and improper access to the machinery; the control objects are switchers and starters within an extraction district. The technological environment parameters to be controlled are gas content, including CH₄, CO, CO₂ and O₂, variation in mine air pressure, light, sound, temperature, acceleration or dislocation of central control unit housing. The article presents engineering solutions on subsystems of data reading, processing and storage.

This article describes the operation principle of an extrusion line for producing a polypropylene film for sleeves. The advantages and disadvantages of the technological and structural nature for an extrusion line are presented, as well as the stages of polymer sleeves with the calculation of technological parameters and a description of the main purpose of each stage. The film quality is described, such as the turbidity, coefficient of friction, glossiness, and breaking strength. The dependence of the milkiness on the average cooling temperature of the extruder head is defined. The glossiness dependence is calculated on the cooling temperature of the extruder head. The dependence of the friction coefficient on the cooling temperature of the extruder head was established. The influence of the crystallization line height on the glossiness of the film is defined. The influence of the crystallization line height on the milkiness is shown. The dependence of fluctuations in the average thickness (thickness difference) of the film on the thickness of the forming slot is found. The dependence of fluctuations in the average thickness (thickness difference) of the film and degree of inflation of the sleeve is discovered. The relationship between the quality parameter of the film and technological parameters of its production process has been determined. An automated system for temperature control has been developed in the production of polyethylene film by installing a temperature sensor with feedback.

The article presents the remote monitoring systems for operation of high-voltage substations and shovels, designed at the Karaganda State Technical University and introduced at Shubarkol-Komir open pit coal mine. The systems measure power consumption parameters and controls power consumers and electrical protection. The high-voltage substation monitoring systems transmit data via rf modem, the shovel operation monitoring systems use GPRS modems to transmit data via Internet to a central operator office. In the course of trial operation of the remote monitoring systems, it was succeeded to save power owing to elimination of idle operation of heavy-duty mining machines; moreover, the scope of the continuous control covered power consumption and electric protection at substations and on shovels.

The work is devoted to the development of a system for diagnosing the technical condition of structural elements of overhead high-voltage power lines (HVPL). Methods for research and development of structural diagrams of systems for collecting and primary processing of information are based on a combination of experimental and descriptive methods, which will ensure the achievement of goals and scientific objectives. This paper defines the main directions of research and development for monitoring overhead power lines, develops methods for monitoring volumetric and surface leakage currents of high-voltage insulators, and presents the structure of the hardware of electrical energy converters for powering electronic units structurally located in the upper part of the overhead power line support. The materials of the work will form the basis for the construction, structure and technical solutions for a complex of remote monitoring of the condition of overhead transmission line structural elements.

В статье рассмотрена задача разработки системы текущего контроля степени обледенения элементов конструкции сверхвысоковольтных воздушных линий электропередачи 500 кВ в условиях роста климатически обусловленных нарушений в работе магистральных электрических сетей Республики Казахстан. На основе анализа эксплуатационных данных показано, что значительная доля технологических нарушений связана с гололёдно-ветровыми воздействиями, вызывающими провисание и обрывы проводов, повреждение линейной арматуры, деформацию опор и отключения линий. Для количественной оценки условий гололёдообразования разработан критерий метеорологических параметров Кмет, основанный на совместном учёте температуры воздуха, относительной влажности и условий формирования ледяных отложений на цилиндрических проводниках. Предложенный критерий позволяет оценивать вероятность возникновения опасных режимов гололёдообразования и формировать диагностические признаки неблагоприятных климатических условий. На основе полученных результатов разработаны алгоритм функционирования системы текущего контроля степени обледенения элементов конструкции и структурная схема аппаратной части, включающая блоки мониторинга механического состояния элементов линии, климатических параметров, сбора и передачи данных, аналитической обработки информации и взаимодействия с инженерно-техническим персоналом. Предлагаемый подход ориентирован на раннее выявление опасных режимов эксплуатации и снижение числа аварийных ситуаций на воздушных линиях электропередачи 500 кВ. Ключевые слова: воздушные линии электропередачи; сверхвысоковольтные линии электропередачи; обледенение; гололёд; метеорологические параметры; критериальный функционал; вероятность гололёдообразования; распределённый мониторинг.