Investigation of Properties of Combined Scheme of Single-Phase Switching of Induction Electric Drive of Pumping Plants

Shurub, Yu.V.; Vasilenkov, V.; Tsitsyurskiy, Yu. L.

doi:10.15407/techned2018.06.050

Cited by 7 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[26] of Part 1, economic [3], [25] of Part 1, mathematical modelling [22], [25, 26], [30,31], [33], [17] of Part 1, functional modelling [21,22], [18] of Part 1, diagnostics and self-control [23,26], [22] of Part 1 and others. It can also be applied to tasks regarding meaning recognition in electrical engineering problems: automatic control of technological processes [3,4], [32,33], [17] of Part 1, electromagnetic compatibility [23,35], [19] of Part 1, studies of electrophysical processes [34,37], [30] of Part 1, electromechanical processes [32, 33], [34,35], [17] of Part 1, the stability of the systems [20,36], [27] of Part 1, the stability of the electric drive [22,33], [34,35] and the quality of the pulse circuits [35], [23] of Part 1, etc. It is also useful for the tasks of pattern recognition, based on morphological features: linguistic, cochlear, biological [20] of Part 1, medical [28] of Part 1,mechanical [35], optical [36], physicochemical [37], and etc.…”

Section: Extending the Results To Other Recognition Tasksmentioning

confidence: 99%

Detecting development scenarios of dynamic events in electric power network smart-grids.Part two“Selective Protection”

Sivokobylenko¹,

Nikiforov

Zhuravlov³

2021

AAIT

View full text Add to dashboard Cite

When implementing development concepts in the electric power industry (such as “Smart Grid”, “Digital substation” and “Outsourcing of services”), the task of ensuring stable relay protection operations and automation devices is urgent. The problem is solved according to the developed structural-information (SI) method. A method for selective search of the optimal amount of structured information for automatic decision-making is proposed. The article discusses an algorithm for recognising scenarios for the development of semantic events, which is included in the SP-method. The algorithm is applied uniformly for all hierarchical levels of recognition, based on the goals of decision making at the senior level. Control of the sequence of information events is performed in the dynamics of the passage of events along one path from all relationships according to the structural-information model. Part 1 shows a collaborative structural-information model consisting of a shaping tree in a dynamic object and a recognition tree in devices. A theoretical description of the algorithm is given using the amplitude and time (Ξ,Η) selectivity windows in the general structural scheme of S-detection. The application of the method for different hierarchical levels of recognition is shown. The decision-making results are presented in two forms, by means of a single semantic signal to indicate a group of results and filling in the table of the sequence of occurrence of the recognised elementary information components. Part 2 shows the application of the SPmethod at different hierarchical levels of recognition for the synthesis of a selective relay, which implements an algorithm for finding a damaged network section with single-phase ground faults in 6-35 kV distribution networks with a Petersen’s coil. The reasons for the unstable operation of algorithms of known selective relays are indicated, based on the concepts of scenario recognition. The improvement of the structure of a selective relay operating on the basis of the criterion for monitoring the coincidence of the first half-waves of the mid-frequency components in the signals of transient processes is considered. Examples of the synthesis of elementary detectors of absolute, relative and cumulative actions in relation to a selective relay are given, which make it possible to fill the amount of information for general S-detection. The simulation of the operation of the synthesised S-detector on the signals of real emergency files of the natural development of damage to the isolation of the network phase and simulation of artificial scenarios of events in the mathematical SI-model are carried out.

show abstract

Section: Extending the Results To Other Recognition Tasksmentioning

confidence: 99%

Detecting development scenarios of dynamic events in electric power network smart-grids.Part two“Selective Protection”

Sivokobylenko¹,

Nikiforov

Zhuravlov³

2021

AAIT

View full text Add to dashboard Cite

show abstract

“…The use of a capacitor with an adjustable capacity increases the overall dimensions of the ED. In [4], for the operation of controlled pumps at single-phase power, the use of a combined circuit controlled by a thyristor voltage converter (TVC) of the electric drive with variable structure of the power part, shown in Fig. 1 is proposed.…”

mentioning

confidence: 99%

“…where  is the control angle of the thyristors (in electrical degrees);  0 is the frequency of supply voltage;  is the The numerical values of the matrices of coefficients 4 1 k k  that allow to associate the stator voltage vector of the two-phase IM model in the stator coordinates α, β, 0, with the parameters of the external motor circuit (network voltage, capacitor capacity) and the state variables are given in Table 1 depending on the position of switch K and the state (conductive or non-conductive) of the thyristor controller.…”

mentioning

confidence: 99%

“…Thus, changing the structure of the power circuit does not require a change in the system of differential equations, and is accompanied only by a change in the coefficients 4 1 k k  in equation 2, without violating the laws of continuity of motor flux linkages and capacitor charges. Table 1 Matrices of coefficients of equation 1Circuit (position of the key К)…”

mentioning

confidence: 99%

See 1 more Smart Citation

Harmonic Analysis of the Combined Circuit of Single-Phase Switching of Induction Electric Drive With Thyristor Control

Shurub¹,

Tsitsyurskiy²

2020

Elektroteh. elektromeh.

View full text Add to dashboard Cite

Purpose. The purpose of this article is to provide a comparative analysis of influence of the phase controlled single-phase induction electric drive coordinates harmonic components on the operational characteristics of the electric drive under different variants of the power part. Methodology. A mathematical model of the combined circuit of a single-phase induction motor with a variable structure of the power part and a constant capacitance of the phase-shifting capacitor is generalized for various variants of connection of the power part of the electric drive with thyristor control. The comparative harmonic analysis of currents and torques of the motor is carried out and the factors influencing the energy efficiency of the electric drive at different circuit of connection of the power part are determined. Results. The analysis of the obtained data shows that the series-parallel circuit has the best harmonic composition of the consumed current in practically the whole range of changes of load torque and speed. The main effect on the loss increase is due to the asymmetry of the currents in the series-parallel circuit and the higher harmonics in the Steinmetz circuit. Originality. For the analysis of the processes in these circuits, a generalized thyristor control single-phase electric drive mathematical model, in which the structure of differential equations remains unchanged regardless of the circuit of connections of the power part, is developed. Practical value. Using of the combined circuit of single-phase switching on of a three-phase induction motor allows to use a constant capacity in the range of slips from nominal to critical without exceeding the nominal losses. References 4, tables 1, figures 5.

show abstract

Synthesis of the Digital Controllers of the Electric Drives as Actuators of Utility Technological Control Systems

Shurub

Dudnyk

2019

2019 IEEE 6th International Conference on Energy Smart Systems (ESS)

View full text Add to dashboard Cite

Investigation of Properties of Combined Scheme of Single-Phase Switching of Induction Electric Drive of Pumping Plants

Cited by 7 publications

References 6 publications

Detecting development scenarios of dynamic events in electric power network smart-grids.Part two“Selective Protection”

Detecting development scenarios of dynamic events in electric power network smart-grids.Part two“Selective Protection”

Harmonic Analysis of the Combined Circuit of Single-Phase Switching of Induction Electric Drive With Thyristor Control

Synthesis of the Digital Controllers of the Electric Drives as Actuators of Utility Technological Control Systems

Contact Info

Product

Resources

About