scholarly journals Emergency diagnostics of synchronous electric drive of pumping units in the mine

2018 ◽  
pp. 94-98
Author(s):  
I.I. Peresunko ◽  
E.S. Bednov ◽  
V.N. Kyanchuk ◽  
Yu.V. Kurochkin ◽  
◽  
...  
Keyword(s):  
Electric Drive ◽  
Pumping Units ◽  
Emergency Diagnostics

SIMULATION OF SOFT START OF SYNCHRONOUS ELECTRIC DRIVES

2019 ◽  
Author(s):  
Shakhboz Dadabaev
Keyword(s):  
Computer Simulation ◽  
Electric Drive ◽  
Water Supply Systems ◽  
Factors Affecting ◽  
Electric Drives ◽  
Soft Start ◽  
Simulation Results ◽  
Pumping Units ◽  
Negative Factors ◽  
Supply Systems

The main negative factors affecting the starting modes of synchronous electric drives of pumping units of irrigation water supply systems were identified, computer simulation of direct and soft start of synchronous electric drive was made, the simulation results are shown in graphs and a brief conclusion was made on the study.

scholarly journals Computer Modeling of Pumping Station with Unregulated Electric Drive

2020 ◽  
Vol 220 ◽  
pp. 01039
Author(s):  
Shakhboz Dadabaev ◽  
Elena Gracheva
Keyword(s):  
Electric Drive ◽  
Electromagnetic Torque ◽  
Electric Motors ◽  
Motor Speed ◽  
Electric Drives ◽  
Pumping Station ◽  
Soft Start ◽  
Soft Starter ◽  
Pumping Units ◽  
Static Torque

The results of the analysis of transient and technological processes of the irrigation pumping station of the first lift, taking into account the negative starting effects on the synchronous electric drive, are considered. The analysis and review of the ways of regulating the performance of the units of the irrigation pumping station of the first lift are made, and the main difficulties of the existing methods of regulating the pump supply are revealed. Computer simulation of starting modes of high-voltage synchronous electric motors with direct and soft start, where soft starter was used for soft start, was carried out. The simulation took into account the changes in the currents of all phases of the electric motor, the electromagnetic torque, the motor speed, the effective value of the current, as well as the static torque. The introduction of semiconductor soft starters for electric drives of high-power pumping units has been substantiated.

scholarly journals Improving the Efficiency of Distributed Water Supply Systems by Means of an Adjustable Electric Drive

2021 ◽  
Vol 24 (5) ◽  
pp. 19-34
Author(s):  
Mykola Moshnoriz ◽  
Serhiy Babiy ◽  
Alexander Payanok ◽  
Alexey Zhukov ◽  
Dmytro Protsenko
Keyword(s):  
Water Supply ◽  
Control Systems ◽  
Electric Drive ◽  
Electrical Network ◽  
Effective Control ◽  
Water Supply Systems ◽  
Pipeline Network ◽  
Pumping Station ◽  
Pumping Units ◽  
The Impact

The water supply of the pumping station must meet the needs of the consumer which change during the day. Therefore, its performance needs to be adjusted. Any deviation of the pump unit’s performance from the nominal value leads to additional energy costs. Under such conditions, great importance is paid to optimising the operation of electric drives of the water supply pumping station. To regulate the performance of a pumping station, it is often resorted to changing the number of operating pumping units, the engines of which are started directly from the electrical network. Medium-and high-power engines are subject to technical restrictions for a direct start, which are supplemented by the need to maintain pauses between starts. Therefore, when ensuring the desired value of pumping station performance, it is very important to consider the features of starting pump engines. Control systems are widely used in the field of electric drive and water supply. It is in these areas that the efficiency of the control system depends on the amount of electricity that will be consumed by the technological process or the reliability of its operation. It is known that pumps account for about half of all energy produced. Therefore, the issue of effective control systems is particularly relevant in the field of water supply. The purpose of this study is to increase the reliability and efficiency of the water supply system by considering the distribution properties of the pipeline network when controlling electric pump drives, which will allow coordinating the operation of the pumping station, the pipeline network, and the consumer. To achieve this purpose, the study was conducted to assess the impact of the distribution and length of the pipeline network. The system of water supply and distribution is analysed, what criteria affect the correct performance of work and what problems may arise during operation for a long period of time are investigated. Ways to optimise the operation of pumping stations to increase their energy efficiency and cost-effectiveness of installations are investigated. The main reasons for the expediency of using an adjustable electric drive to control pumping units are considered

scholarly journals REDUCING ENERGY COSTS AND INCREASING THE RELIABILITY OF THE ELECTRIC DRIVE OF PUMPING UNITS BY INTRODUCING A FREQUENCY CONVERTER INTO THE CONTROL SYSTEM

2020 ◽  
pp. 59-61
Author(s):  
V. D. Zhokhov ◽  
S. P. Smolyakov ◽  
A. D. Zhokhov ◽  
Yu. P. Serdobintsev
Keyword(s):  
Control System ◽  
Control Systems ◽  
Electric Drive ◽  
Frequency Converter ◽  
Programmable Logic Controller ◽  
Energy Costs ◽  
Programmable Logic ◽  
Pumping Stations ◽  
Pumping Units ◽  
Reducing Energy

The analysis of the principle of operation of pumping stations and their control systems is carried out. An algorithm for controlling pumping units using a frequency Converter (if) has been developed. Based on this algorithm, software for a programmable logic controller (PLC) was created.

scholarly journals THE ELECTRIC DRIVE PUMPING UNITS STEADY OPERATING MODES OPTIMIZATION BY THE MODES RELIABILITY CRITERIAS

2019 ◽  
pp. 24-32
Author(s):  
I. I. Yaremak
Keyword(s):  
Centrifugal Pump ◽  
Electric Drive ◽  
Operation Mode ◽  
Working Fluid ◽  
Pump Unit ◽  
Pumping Station ◽  
Operating Modes ◽  
Pumping Unit ◽  
Reliability Of Operation ◽  
Pumping Units

According to the research results, the target functions of the task of optimizing the functioning of the units according to the criteria of the regime reliability, depending on the flow of the working fluid were synthesized, which made it possible to research the influence of the regime on the reliability of operation of electric and hydraulic subsystems of the pump unit. The extreme weight of local target functions of regime reliability of electric motor and the centrifugal pump in various (especially low-flow rate) operating modes are determined. It is proposed to optimize the operating modes of  pumping units of oil pumping station with the simultaneous use of the reliability criteria of electric drive and centrifugal pump. . It was established that the maximum values of reliability of electric drive and centrifugal pump are achieved at different values of the load, which requires the involvement of multi-criteria optimization methods. The problem of optimization of the established modes of the pump unit in the multicriteria setting, taking into account the technological limitations of its subsystems was formalized. The analysis of modern methods of solving the problem of multicriteria optimization of the steady modes of operation of pump units is carried out. The method of solving the multicriterion optimization problem is substantiated, which fully takes into account the influence of operation mode on the reliability of electric and hydraulic subsystems of pumping unit. It is revealed that the most appropriate method for solving this problem is the method of approaching an ideal (utopian) point in the criteria space. With this method, the desired ratio of criteria at the optimum point is the best. The value of the "agreed optimum" of liquid flow has been determined in order to choose the optimum for the reliability of operation mode of the pumping unit of oil pumping station.

scholarly journals Energy efficient water pumping installation on the basis of frequency-regulated electric drive

2021 ◽  
pp. 81-96
Author(s):  
P. Klendiy ◽  
◽  
L. Kolodiychuk ◽  
O. Dudar ◽  
◽  
...  
Keyword(s):  
Water Supply ◽  
Control Systems ◽  
Water Consumption ◽  
Electric Drive ◽  
Water Losses ◽  
Automatic Control Systems ◽  
Operating Modes ◽  
Water Pumping ◽  
Unit Energy ◽  
Pumping Units

Electric pumping units are not characterized by optimal operating modes and today are energy-intensive technologies. Water consumption is determined by unevenness and is formed under the influence of many, often uncontrollable factors. The inconsistency of the planned water supply regime with the actual water consumption leads to excessive pressures, which causes not only direct overconsumption of electricity at pumping stations, but also increases the likelihood of accidents in the network, contributes to greater water losses due to leaks in the water supply network. additional overconsumption of electricity consumed by pumping units to compensate for pressure loss. With the right choice of electric pump unit, its mechanical characteristics and power of the motor are designed to provide the required pressure in the system at maximum water consumption (morning and evening). At other times of the day, due to the decrease in water consumption, the pressure in the system increases and it is necessary to cover the throttle valve, and this requires constant rotation near it and is accompanied by electricity losses. In electric pumps, which are equipped with an unregulated electric drive, the flow control is carried out in almost the only traditional way - throttle on the discharge side. The paper reveals the need for transition from throttle control systems of pump units to automatic control systems by automatically maintaining the required technological parameter, in particular, the pressure at the flow rate of changing water due to the use of frequency-regulated asynchronous electric drives. Keywords: water pumping unit, energy consuming technologies, throttling, frequency-regulated electric drive

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