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2022 IEEE 8th International Conference on Energy Smart Systems (ESS)最新文献

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Algorithmization of designing gas-hydrodynamic measuring transducers using structural and parametric optimization 基于结构和参数优化的气液动力测量传感器设计算法
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969338
Y. Pistun, H. Matiko, H. Krykh
The paper presents an algorithm for designing gas-hydrodynamic measuring transducers of physical and mechanical parameters of fluids. It starts by synthesizing and choosing the structural diagrams and integrating the mathematical modeling of transducers into the optimization process of its design and mode parameters. Then, the optimization results analysis and a final variant of the transducer with the specified technical characteristics are carried out. An example of the application of the developed algorithm for designing a diagram of measuring transducer of the combined parameter depending on kinematic viscosity and density of petroleum product is presented.
提出了一种流体物理力学参数气液动力测量传感器的设计算法。首先对换能器的结构图进行综合和选择,并将换能器的数学建模融入到其设计和模态参数的优化过程中。然后,对优化结果进行分析,并对具有指定技术特性的换能器进行最终改型。给出了将该算法应用于石油产品运动粘度和运动密度组合参数测量传感器图的设计实例。
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引用次数: 1
Feature of Solar Radiation Forecast Services Use for Solar Plants 太阳辐射预报服务应用于太阳能发电厂的特点
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969258
I. Verbytskyi, Mykola Lukianov, R. Strzelecki
Many countries, including Ukraine, are beginning to regulate the generation of energy produced from renewable energy sources more tightly to mitigate power imbalances. For this reason, electricity energy providers from renewable sources are forced to forecast energy generation and pay penalties if their forecast doesn't match with real energy generation. Renewable energy providers may use weather forecast as well as install energy storage system to minimize the penalties. The main purpose of the study is the review common cloudiness forecast services, uncertainty interval calculation of solar radiation for these services based on comparing with real solar radiation, estimating the opportunity of combining forecast data from several sources to minimize error and analysing the profit from the power plant using forecast services.
包括乌克兰在内的许多国家开始对可再生能源发电进行更严格的监管,以缓解电力失衡。因此,来自可再生能源的电力能源供应商被迫预测发电量,如果他们的预测与实际发电量不符,则要支付罚款。可再生能源供应商可以利用天气预报,并安装储能系统,以尽量减少罚款。本研究的主要目的是回顾常用的云量预报服务,在与实际太阳辐射比较的基础上计算这些服务的太阳辐射的不确定性区间,估计结合多个来源的预报数据以减少误差的机会,并分析电厂使用预报服务的利润。
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引用次数: 0
Analysis of the Probable Decrease of Load Shedding Reserve in Power System of Ukraine at Installed Capacity of Renewable Energy Sources 乌克兰可再生能源装机条件下电力系统减载储备可能减少的分析
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969260
Volodymyr A. Lytvynchuk, M. Kaplin, N. Bolotnyi, O. Karmazin
Analysis of system emergencies in European power systems, which have a share of renewable sources in the generation structure, revealed the shortcomings of the under frequency load shedding (UFLS). An important fact of this was that UFLS disconnected at the same time part a load of demand together with the generation that was in the network of Distribution System Operator (DSO). From the analysis of emergencies, it was possible to conclude that if there is a share of distribution generation (DG) in the power system, it is necessary to take into account this feature when choosing the amount of load shedding (LS) and setting of UFLS relay. The paper conducted research to determine the reasons for the reduction of the UFLS reserve on a single line diagram of the local network with the connected solar power plant. The current UFLS scheme, which uses relays with and without time delay, was investigated and was offered an optimal scheme.
通过对发电结构中含有可再生能源的欧洲电力系统突发事件的分析,揭示了低频减载(UFLS)的缺点。其中一个重要的事实是,UFLS同时断开了部分需求负荷,连同配电系统运营商(DSO)网络中的发电。通过对突发事件的分析,可以得出结论,如果电力系统中有一定份额的配电发电(DG),那么在选择减载量(LS)和UFLS继电器的整定时,有必要考虑到这一特征。本文通过对并网太阳能电站的单线线图进行研究,确定UFLS储备减少的原因。研究了目前采用带时延和不带时延继电器的UFLS方案,并给出了最优方案。
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引用次数: 0
An Analysis of Uncertainty for Failure Risk Assessment of Power Transformer 电力变压器故障风险评估的不确定性分析
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969341
E. I. Bardyk, N. Bolotnyi
The diagnostic issues for complex technical objects condition under uncertainty are considered. This problem is relevant in the tasks of ensuring quality, reliability and efficient operation of technical objects. This article is devoted to the problem study of associated with uncertainty in the development and implementation of risk management system for power transformer failure. The proposed approach is based on fuzzy logic. This allows formalizing the expert's knowledge about the fault types of power transformer and decision-making in a multicriteria problem. As a result of the research, a classification of uncertainty types under risk assessment. Recommendations are also made on methods of overcoming problems associated with uncertainty problems that arise during the development and implementation of management systems, through more accurate risk assessment. The proposed approach based on methods of information processing is formalized, convenient for computer implementation and their subsequent verification in the diagnosis of various technical objects.
研究了不确定条件下复杂技术对象的诊断问题。这个问题关系到保证技术对象的质量、可靠性和高效运行的任务。本文对电力变压器故障风险管理系统的开发与实施中与不确定性相关的问题进行了研究。该方法基于模糊逻辑。这允许将专家关于电力变压器故障类型的知识和多标准问题中的决策形式化。根据研究结果,对风险评估中的不确定性类型进行了分类。还就如何通过更准确的风险评估,克服在制定和实施管理制度期间出现的与不确定性问题有关的问题提出了建议。所提出的基于信息处理方法的方法是形式化的,便于计算机实现及其在各种技术对象诊断中的后续验证。
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引用次数: 1
Monitoring of loss power components in three-phase low-voltage power supply systems 三相低压供电系统中损耗功率元件的监测
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969305
D. Tugay, O. Shkurpela, Y. Forkun, Valentyn Akymov, Denis Bystrov, R. Makoviei
A comparison of two mathematical models of decomposition of the total power loss in three-phase four-wire systems is made. The paper considers a five-component model used in the Fluke 437–II Power Quality Monitor - energy loss calculator, and an alternative four-component model based on modern power theory. The comparison was performed using the developed meter of total power loss components in practical conditions. Based on the results of monitoring the electrical network of 0.4 kV, the advantages and disadvantages of each model and their prospects for use in the Smart Grid were determined.
对三相四线制系统总损耗分解的两种数学模型进行了比较。本文考虑了Fluke 437-II电能质量监测仪中使用的五分量模型-能量损耗计算器,以及基于现代功率理论的替代四分量模型。用研制的总功率损耗分量计在实际工况下进行了比较。根据对0.4 kV电网的监测结果,确定了各模型的优缺点及其在智能电网中的应用前景。
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引用次数: 0
Design and Control of 11-Level Modular Multilevel Converter with Dual Purpose Inverter for Grid Connected Photovoltaic System 并网光伏系统11级模块化多电平双用途逆变器的设计与控制
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969250
S. Behera, Kishor Sasmal, S. Behera, N. Giri, O. Rubanenko, M. Bajaj
An 11-level modular converter is designed to cater to the need of a single-phase system in accordance with IEEE standards in respect of total harmonic distortion (THD). The control technique is used for controlling the KW as well as KVAR by means of power angle and modulation index respectively. The objective of the inverter is to make operate in dual mode as an active power injector, as well as a reactive power injector into the grid irrespective of the active power supply from the solar photovoltaic (PV) arrays. The operation is accomplished with a grid-connected solar photovoltaic (PV) system. The modular multilevel converter (MMC) inverter is placed between the grid and the PV array along with an RL load. All the simulation and analysis work has been performed in MATLAB Simulink software. Further, THD is compared with two techniques such as level shifted Pulse Width Modulation (PWM) and phase shifted PWM.
根据IEEE总谐波失真(THD)标准,设计了一种满足单相系统需要的11电平模块化变换器。该控制技术分别通过功率角和调制指数对KW和KVAR进行控制。逆变器的目标是使其在双重模式下运行,既可以作为有功功率注入器,也可以作为无功功率注入器注入电网,而不管太阳能光伏(PV)阵列的有功功率供应如何。该操作是通过并网太阳能光伏(PV)系统完成的。模块化多电平变换器(MMC)逆变器与RL负载一起放置在电网和光伏阵列之间。所有的仿真和分析工作都在MATLAB Simulink软件中进行。此外,还比较了移电平脉宽调制(PWM)和移相脉宽调制(PWM)两种技术。
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引用次数: 2
Approaches to developing an audio system as part of a smart house 智能住宅中音频系统的开发方法
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969315
S. Bevz, V. Voitko, S. Burbelo, P. Stavytskyi
Approaches to the development of the system of music synthesis and recognition are considered. In addition, such audio software as part of the smart house system can bring additional benefits and increased experience for its users. It is important to consider an audio recognition state that considers fingerprint creation and optimization. Moreover, an approach of parallel GPU computing is considered as a solution to the fingerprint matching process optimization.
考虑了音乐合成和识别系统的发展途径。此外,这种音频软件作为智能家居系统的一部分,可以为用户带来额外的好处和增加的体验。考虑考虑指纹创建和优化的音频识别状态是很重要的。此外,本文还提出了一种基于并行GPU计算的指纹匹配优化方法。
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引用次数: 0
Operation Modes Investigation of Cascade Pump Unit Using Refining Hydraulic Network Model 基于精炼水力网络模型的梯级泵机组运行模式研究
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969279
M. Pechenik, S. Burian, I.V. Khudia, M. Pushkar, Vitalii Teriaiev
The article considers the electromechanical water supply system of a residential building, the pumping station of which includes two half-power capacity centrifugal pumps connected in parallel. At the same time one pump is adjustable and provides stabilization of pressure in a hydraulic network at the necessary level, the second - not regulated which is switched on at the maximum loads and uses soft start system. For more accurately assess the dynamic and static characteristics of water supply, the features of the daily schedule of water yearly consumption, defined in spring, autumn, winter and summer periods are considered. Using the SimHydraulics library of the MatLab application package, a refining model of the hydraulic network has been developed, which allows to take into account the characteristics of network and design features of its individual elements with a high degree of accuracy. The study of the level of accuracy of pressure stabilization of the water supply system is performed, as well as the results of the analysis of energy characteristics of the electromechanical water supply system with variation of its load level during the day and year. Based on the review of the previous research, the expediency of using cascade pumping unit electromechanical systems for water supply systems of residential buildings was determined. Recommendations for the use of a refining model of the hydro network in the study of the modes of operation of the water supply complex are presented.
本文考虑了某住宅楼的机电供水系统,该系统的泵站包括两台半功率容量的离心泵并联。同时,一个泵是可调节的,并在液压网络中提供必要水平的压力稳定,第二个-不调节,在最大负载时打开并使用软启动系统。为了更准确地评估供水的动态和静态特征,考虑了在春、秋、冬、夏四个时期定义的年用水量每日时间表的特征。利用MatLab应用程序包中的simhydraulic库,开发了液压网络的精化模型,该模型可以高精度地考虑网络的特性和各个元件的设计特点。对供水系统稳压精度水平进行了研究,并对机电供水系统日、年负荷水平变化时的能量特性进行了分析。在回顾前人研究成果的基础上,确定了住宅供水系统采用梯级抽油机机电系统的便利性。在研究供水系统的运行模式时,提出了使用水网精炼模型的建议。
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引用次数: 1
Peculiarities of the Reconstruction of the Relay Protection of a Transformer Substation 变电站继电保护改造的特点
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969294
N. Filimonenko, Kostiantyn Filimonenko, Hryhoriy Melkonov
The paper presents the results of the analysis for the implementation of the transition of the existing 6 kV Substation to voltage class 35 kV with reconfiguration and automation of electrical equipment of the substation - this is a necessary and priority step to improve the efficiency of electrical networks. When considering in detail all the advantages of the presented terminals the most acceptable is the Sepam (Schneider Electric) type relay protection. To achieve safe and reliable operation of the power supply system, the substation must be equipped with microprocessor relay protection devices. In addition to the necessary functioning of the terminals can be equipped with interface parts of the lower stage, which are needed when building an automated design (configuration) of power facilities. The aim of the paper is to study the possibility and implementation of equipping microprocessor-based relay protection of the substation to ensure the normal safe and reliable operation of the substation power supply system. Switch to relay protection and electrical automation device on microprocessor-based element base.
本文介绍了通过变电站电气设备的改造和自动化,实现现有6千伏变电站向35千伏电压等级过渡的分析结果,这是提高电网效率的必要和优先步骤。当详细考虑所有端子的优点时,最可接受的是Sepam(施耐德电气)型继电保护。为了实现供电系统的安全可靠运行,变电站必须配备微处理器继电保护装置。除了终端的必要功能外,还可以配备下层的接口部件,这是建立自动化设计(配置)电力设施时所需要的。本文的目的是研究在变电站安装基于微处理器的继电保护,以保证变电站供电系统正常安全可靠运行的可能性和实现。开关到继电保护和电气自动化装置在微处理器为基础的元件基础上。
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引用次数: 0
Field-Weakening Methods for Torque-Flux Direct Field-Oriented Control of Induction Motors 感应电动机转矩-磁链直接定向控制的弱磁场方法
Pub Date : 2022-10-12 DOI: 10.1109/ESS57819.2022.9969273
S. Peresada, Y. Nikonenko, S. Kovbasa
The torque and flux direct field-oriented control systems of induction motors based on the proposed open-loop and closed-loop field-weakening methods are presented. Field-weakening operation regimes are designed to take into account physical limitations of the motor and inverter. The developed solutions guarantee torque-flux reference trajectories tracking in all speed regulation regions of induction electric drive: constant torque, constant power and constant slip frequency. Tracking of torque and rotor flux vector module is ensured by special simultaneous generation of the torque and flux reference functions. The closed-loop method has an additional non-linear feedback channel of inverter voltage module which adjusts the flux reference based on the measured (estimated) stator voltage module in order to maintain it at the maximum level. It is shown by simulations that the closed-loop algorithm with a voltage controller provides more complete utilization of motor power compared to the open-loop method. It increases the dynamic power in the supply voltage limitation conditions. The proposed control systems have the typical structure of the modern vector-controlled induction drives and can be used to improve dynamic properties and efficiency in the field-weakening operation mode.
提出了基于开环和闭环弱磁方法的异步电动机转矩和磁链直接定向磁场控制系统。弱磁场运行机制的设计考虑了电机和逆变器的物理限制。开发的解决方案保证了在感应电力驱动的所有调速区域:恒定扭矩,恒定功率和恒定滑移频率的扭矩-磁通参考轨迹跟踪。通过特殊的转矩和磁链参考函数同步生成,保证了转矩和转子磁链矢量模块的跟踪。闭环方法在逆变器电压模块中增加一个非线性反馈通道,该通道根据测量(估计)定子电压模块调整磁通基准,使其保持在最大水平。仿真结果表明,与开环方法相比,带电压控制器的闭环算法能更充分地利用电机功率。它增加了电源电压限制条件下的动态功率。所提出的控制系统具有现代矢量控制感应驱动器的典型结构,可用于改善弱磁场工作模式下的动态性能和效率。
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引用次数: 0
期刊
2022 IEEE 8th International Conference on Energy Smart Systems (ESS)
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