The paper looks at the issues of operation safety of the national power grid and the characteristics

of the national power grid in the areas of transmission and distribution. The issues of

operation safety of the national transmission and distribution grid were discussed as well as threats

to operation safety and security of the electricity supply related to these grids. Failures in the

transmission and distribution grid in 2017, caused by extreme weather conditions such as: a violent

storm at the night of 11/12.08.2017, hurricane Ksawery on 5–8.10.2017, and hurricane Grzegorz on

29–30.10.2017, the effects of which affected tens of thousands of electricity consumers and led to

significant interruptions in the supply of electricity were presented. At present, the national power

(transmission and distribution) grid does not pose a threat to the operation safety and security of

the electricity supply, and is adapted to the current typical conditions of electricity demand and the

performance of tasks during a normal state of affairs, but locally may pose threats, especially in

extreme weather conditions. A potentially high threat to the operation safety of the national power

grid is closely linked to: age, technical condition and the degree of depletion of the transmission and

distribution grids, and their high failure rate due to weather anomalies. Therefore, it is necessary

to develop and modernize the 400 and 220 kV transmission grids, cross-border interconnections,

and the 110 kV distribution grid (especially in the area of large urban agglomerations), and the MV

distribution grid (especially in rural areas). The challenges faced by the transmission and distribution

grid operators within the scope of investment and operating activities, with a view to avoiding

or at least reducing the scale of grid failures in the case of future sudden high-intensity atmospheric

phenomena, are presented.

W artykule przedstawiono wybrane aspekty krajowego technicznego poziomu bezpieczeństwa dostaw energii elektrycznej. Przeprowadzono analizę i ocenę infrastruktury elektroenergetycznej w obszarze wytwarzania, przesyłu i dystrybucji w aspekcie bezpieczeństwa dostaw energii elektrycznej. Przedstawiono charakterystykę sektora wytwórczego oraz infrastruktury sieciowej w obszarze przesyłu i dystrybucji. Określono sytuację obecną i przyszłą w zakresie funkcjonowania wspomnianej infrastruktury elektroenergetycznej w ramach Krajowego Systemu Elektroenergetycznego w kontekście bezpieczeństwa dostaw energii elektrycznej. Oceniono poziom krajowego bezpieczeństwa dostaw energii elektrycznej w obszarze wytwarzania i infrastruktury sieciowej oraz określono zagrożenia i przedstawiono katalog niezbędnych działań w celu poprawy bezpieczeństwa dostaw energii elektrycznej. Stwierdzono, że w obszarze wytwarzania brak jest obecnie zagrożenia bezpieczeństwa dostaw energii elektrycznej w normalnych warunkach obciążenia, ale istnieje duże prawdopodobieństwo jego wystąpienia w przyszłości (po 2025 r.) w warunkach prognozowanego wzrostu zapotrzebowania na energię elektryczną i obowiązywania nowych zaostrzonych wymagań ochrony środowiska (dyrektywy IED, konkluzji BAT, Pakietu Zimowego). Określono, że infrastruktura sieciowa w obszarze przesyłu i dystrybucji jest wprawdzie przystosowana do występujących obecnie typowych warunków zapotrzebowania na energię elektryczną i realizacji wewnętrznych zadań w stanach normalnych, ale może stwarzać potencjalne zagrożenie dla bezpieczeństwa dostaw energii elektrycznej. Dodatkowo w kontekście prognozowanego wzrostu zapotrzebowania na energię elektryczną w przyszłości, niedostatecznej mocy źródeł wytwórczych w Krajowym Systemie Elektroenergetycznym i dostępnej poprzez połączenia międzysystemowe, nierównomiernego ich rozłożenia na obszarze kraju przy braku odpowiednich zdolności przesyłowych sieci, konieczności poprawy jakości i niezawodności dostawy energii do odbiorców końcowych oraz intensywnego rozwoju odnawialnych źródeł energii obecna infrastruktura sieciowa w obszarze przesyłu i dystrybucji będzie niewystarczająca.

Increasing energy security in the face of rising energy demand and declining funding for fossil fuels has necessitated the diversification of energy supply and the shift to renewable energy. Sustainable management of energy supply is aimed at achieving a low-carbon intensity of production, especially in energy-intensive industries, including the mechanical-engineering industry. The article examines the possibility of shifting the current mechanical-engineering enterprise system and the technical, environmental and economic indicators of production to the new concept of the green economy, which will be an alternative to the further sustainable development of the industry. This article analyzes key approaches to energy conservation. An analytical model has been developed for calculating the energy risk of the mechanical-engineering enterprise and has built a context diagram of mechanical-engineering production, taking into account the environmental impact and the possibility of energy modernization, which allows the setting of strategic goals to ensure the sustainability of energy supply in the mechanical-engineering industry and develop the main principles of efficient enterprise activities in the context of increased risk. It has been proven that one of the criteria for increasing the profitability indicator is the adaptability of enterprises to external conditions and increasing alternative options for obtaining energy from our own autonomous sources.

This article is intended to determine the features of public management and the development process of the energy supply system of the Republic of Kazakhstan. Today, the sustainable development of the country’s economy depends directly on the energy sector. Modern society and industry are completely dependent on a stable power supply and today, energy is considered the most important component of the life support of the country’s population. The country’s electrical power industry needs new large-scale investments and promising development. To do this, in the near future, the state needs to consider ways to solve problems that have arisen. The purpose of the study is to consider the elements of public administration and the evolution of the energy supply system in Kazakhstan, as well as public administration systems in other countries, such as the USA, Norway, Great Britain, and the Russian Federation. In the article, with the help of SWOT analysis and scientific analysis, the factors of development of the country’s energy industry are considered.

In recent years, the Australian government has changed course with regard to the gradual replacement of the country’s energy supply by traditional energy resources to alternative renewable energy sources to preserve the environment. The research relevance is predefined by the need to introduce the latest technology and to find investors for the further development of the state energy sector. In this regard, the research to reveal the current state of the energy sector in Australia, the study of existing projects, their productivity, and their impact on the environment. The main methods of research are the method of analysis of existing publications describing the current state of the energy sector as well as the method of comparing the country’s energy performance before and after the implementation of relevant reforms to better illustrate the effectiveness of existing projects. As a result, it was determined that the Australian government pursues a policy of carbon neutrality in the energy industry to reduce the harm caused to nature by harmful emissions into the atmosphere. The state has a focus on reducing the cost of electricity. It is also determined that Australia has a positive attitude toward foreign investment and is open to proposals for new technologies that improve the efficiency and security of the energy supply. The research mentions Australia’s main trading partners, their joint projects, and enterprises. The main directions of alternative energy currently used, their advantages, and their disadvantages are identified. The research result may be of practical value for investors in the field of renewable energy sources in order to better understand the energy market in Australia and possible prospects, as well as for all interested parties.