Methods for the Integrated Reliability Analysis of Heat Supply

Penkovsky

2018

MATEC Web Conf.

The paper formulates the problem of ensuring the reliability of the heat supply system due to the optimal distribution of reliability parameters in the system, including taking into account capabilities of an active consumer to replace part of the load with own sources of thermal energy. Methods and models for solving this problem are proposed, which are based on the theory of random processes, the theory of hydraulic circuits, and the basic laws of heating. Results of the computational experiment based on the developed methodical apparatus are presented. The possible economic effect of using an active consumer for solving the describe problem is also reviewed in the paper.

Section: Computational Experiments and Analysis Of Resultsmentioning

confidence: 99%

Section: Mathematical Formalization Of the Problem Of Optimizing The mentioning

confidence: 99%

Optimization of the reliability of heat supply with an active consumer

Penkovsky

2018

MATEC Web Conf.

“…1. A scheme of DHS: 1) a general scheme of the DHS; 2) a simplified scheme of HS The calculation scheme of a considered DHS is constructed according to a comprehensive approach to the research into the reliability of heat supply [18][19][20] as a joint structure integrating the components of the schemes of HS and HN and is given in Fig. 2.…”

Section: Case Study and Analysis Of Resultsmentioning

confidence: 99%

“…The rationale of using the stationary Markov model as well as the other aspects of using the tool of Markov random processes in the problems of DHS reliability are considered in more detail in [14,[18][19][20][21][22].…”

Section: Formalization Of a Problem Of Determination Of Optimal Reliamentioning

confidence: 99%

Methods and models of ensuring reliability of district heating systems with prosumers

Stennikov

2017

E3S Web Conf.

Abstract. The paper is concerned with the statement of a district heating systems reliability problem. The reliability is planned to be ensured through the optimal distribution of reliability parameters among components of system, considering the capabilities of the prosumer to supply part of load by their heat sources. The methods and models are suggested to solve this problem. They are based on the theory of random processes, theory of hydraulic circuits and basic laws of cogeneration. The case study results obtained using the developed technique are presented. A potential economic benefit of involving the prosumer is demonstrated in the case study. The conclusions and directions for further research are formulated.

“…The values of the radius vary from 2 km (the least distance between the consumer and source) to 15.5 km in the direction of pumping station PS 4-7. An analysis of heating system reliability shows that the standard values of availability factor and probability of failure-free operation, set according to [51], [52], are not met for some nodes that belong to the zones of EHSR. According to the reliability indices obtained, we adjusted EHSR in the considered system.…”

Section: Case Studymentioning

confidence: 99%

Optimization of the Effective Heat Supply Radius for the District Heating Systems

Stennikov

Mednikova

Environmental and Climate Technologies

et al. 2019

The problem of determining the effective (optimal) heat supply radius is considered. Heat supply radius is transportation distance of heat energy in the district heating systems (DHS), under which the highest indices of economic efficiency of district heating to consumers are respected. To solve this difficult and multifactorial problem, a bi-level approach has been proposed. This approach allows finding the optimal frameworks of territorial areas of district heating while fulfilling the necessary requirements for thermal-hydraulic modes in heat networks and for reliability of heating to consumers. Methodology for solving the formulated problem is based on bi-level programming methods, models of Theory of hydraulic circuits, nonlinear optimization methods, nodal reliability indices (availability factor, failure-free operation probability), Markov random processes models and other methods and models. A case study has been conducted using the developed methodological apparatus for the actual DHS scheme of the Irkutsk city (Russia, Siberia).