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2022 IEEE 7th International Energy Conference (ENERGYCON)最新文献

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Development of a Viable Black Start Restoration Pathway and Problem Formulation Sequence 可行的黑启动恢复路径和问题表述序列的开发
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830473
Ye-Obong N. Udoakah, H. B. Sonder, Jun Liang, L. Cipcigan
The robustness of the power grid, which is normally deigned to meet “N-1 or N-2” criteria, is constantly being threatened as a result of frequent weather-related extreme events. The impact of such events on any country’s economy can be massive and hence certain measures must be put in place to either prevent or reduce such impacts to its barest minimum. The resilience nature of some distributed energy resources (DERs) has further enhanced its viability in most power grid applications today. The integration of DERs into the power grid, especially at the distribution level, has greatly changed the dynamics of the modern electricity system. The role of DER in the provision of black start services is the focus of this paper. Since the emerging power grid must be safeguarded against all forms of instability, which is most likely to result in a system collapse leading to a power blackout, a critical review of some outstanding blackout events of the last decade was carried out. Armed with this knowledge, a restoration strategy capable of improving the resiliency of the grid in the unlikely events of a blackout is presented in this work. The uniqueness of the developed black start restoration sequence is the real time coordination of the restoration process by the advanced distribution management system. Besides this, a black start restoration (BSR) problem formulation method which can be applied in distribution management system is presented. The formulated BSR problem was done as a dynamic optimisation problem.
电网的稳健性通常被设计为满足“N-1或N-2”标准,但由于频繁的与天气有关的极端事件,电网的稳健性不断受到威胁。此类事件对任何国家经济的影响都可能是巨大的,因此必须采取某些措施,以防止或将此类影响减少到最低限度。一些分布式能源(DERs)的弹性特性进一步增强了其在当今大多数电网应用中的可行性。分布式电源与电网的集成,特别是在配电层面,极大地改变了现代电力系统的动态。DER在提供黑启动服务中的作用是本文的重点。由于新兴电网必须防止各种形式的不稳定,这很可能导致系统崩溃导致停电,因此对过去十年中一些突出的停电事件进行了批判性的回顾。有了这些知识,在本工作中提出了一种能够在不太可能发生的停电事件中提高电网弹性的恢复策略。所开发的黑启动恢复序列的独特之处在于通过先进的配电管理系统对恢复过程进行实时协调。在此基础上,提出了一种适用于配电管理系统的黑启动恢复(BSR)问题表述方法。将公式化的BSR问题作为一个动态优化问题来处理。
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引用次数: 1
Multiscale Data Analytics for Residential Active Power Measurements through Time Series Data Mining 基于时间序列数据挖掘的住宅有功功率测量多尺度数据分析
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830170
G. Stamatescu, Radu Plamanescu, A. Dumitrescu, Irina Ciomei, M. Albu
Modern measurement and automation equipment for energy systems collect, store, process and communicate ever increasing quantities of raw data which can be used to build data-driven prediction and classification models. Directly using these large and unprocessed data sets can be inefficient especially in imbalanced class problems, where the positive class is sparsely represented in the training examples, such as classification of micro-scale transients. This is due to the longer time required for model training, and due to the increased possibility of obfuscating the useful information behind noisy readings. The matrix profile represents a computationally efficient and general purpose time series data mining technique which is suitable for embedded deployment in future generation smart meters, and in embedded energy gateways. Our analysis concerns the application of this technique on two types of residential electric power measurement data sets: a detached single family house and an apartment, with variable reporting rate and subsequence size parametrisation. Quantitative results support the findings that such approaches serve as practical instrument for measurement time series preprocessing in energy analytics.
用于能源系统的现代测量和自动化设备收集、存储、处理和传输数量不断增加的原始数据,这些数据可用于构建数据驱动的预测和分类模型。直接使用这些大型且未经处理的数据集可能效率低下,特别是在不平衡类问题中,其中正类在训练示例中是稀疏表示的,例如微尺度瞬态的分类。这是由于模型训练所需的时间更长,并且由于噪声读数背后的有用信息混淆的可能性增加。矩阵剖面代表了一种计算效率高、通用的时间序列数据挖掘技术,适用于下一代智能电表和嵌入式能源网关的嵌入式部署。我们的分析涉及该技术在两种类型的住宅电力测量数据集上的应用:独立的单户住宅和公寓,具有可变的报告率和子序列大小参数化。定量结果支持了这一发现,即这种方法可以作为能源分析中测量时间序列预处理的实用工具。
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引用次数: 3
Incorporating Settling Time Constraints of Energy Storage Systems in Frequency Containment Control Optimization Problems 含频控制优化问题中储能系统沉降时间约束的研究
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830171
M. Krpan, M. Miletić, I. Kuzle, H. Pandžić
Response of energy storage units and power plants to a set-point change is not necessarily linear with a constant ramp rate, especially for frequency containment services Which are actuated on a $leq$ 30s time scale. This is because real systems have time lag in their dynamic behavior Which will cause the output to behave nonlinearly before settling down. This paper shows how to implement this behavior into the linear programming optimization framework using settling time constants of a common energy storage system and power plants. Simulation results show that if linear programming is used to model the units participating in the frequency containment services, neglecting the settling time constraints can lead to decisions Which may not be grid-compliant in practice.
储能单元和发电厂对设定点变化的响应不一定是线性的,特别是对于在$leq$ 30s时间尺度上启动的频率控制服务。这是因为实际系统在其动态行为中存在时间滞后,这将导致输出在稳定之前表现为非线性。本文介绍了如何利用一个普通储能系统和发电厂的稳定时间常数将这种行为实现到线性规划优化框架中。仿真结果表明,如果采用线性规划对参与限频服务的单元进行建模,忽略稳定时间约束可能导致实际决策不符合电网要求。
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引用次数: 0
Research on node voltage indices for battery storage management through fuzzy decision making in power distribution networks 基于模糊决策的配电网电池储能管理节点电压指标研究
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830192
M. Barukčić, T. Varga, T. Benšić, V. J. Štil
This paper presents research on power management of a battery storage system (With the aim of reducing system losses) Without information about loads in a power distribution network with installed renewable energy sources and distributed generation. The poWer management of the storage system used in the research is based on a fuzzy inference system to define the input or output poWer of the battery storage system. The optimization procedure to determine the optimal parameters of the power management system is also provided. Except for the optimal allocation of the battery storage and distributed generation systems, the optimization of the parameters is performed along with the allocation optimization. The whole optimization problem is solved for the annual data of load and generation profiles of renewable sources using hourly values, i.e., the optimization is solved simultaneously for 8760 load and generation data. The optimization problem is solved by co-simulation using the metaheuristic optimization technique. Since the method is based on the use of fuzzy systems and metaheuristic optimization, it represents the implementation of computer intelligence for optimal allocation and energy management problems. The presented method is applied to the test distribution system IEEE with 37 nodes. The achieved reduction in annual energy losses is about 40 % of the losses in the power system without the distributed generation units and the battery storage system.
本文研究了在没有可再生能源和分布式发电配电网负荷信息的情况下,电池储能系统的电源管理(以减少系统损耗为目标)。研究中使用的存储系统的功率管理是基于模糊推理系统来定义电池存储系统的输入或输出功率。给出了确定电源管理系统最优参数的优化过程。除了对蓄电池储能系统和分布式发电系统进行优化配置外,在优化配置的同时对各参数进行优化。利用小时值求解可再生能源负荷和发电剖面年数据的整个优化问题,即同时求解8760个负荷和发电数据的优化问题。采用元启发式优化技术,通过联合仿真解决了优化问题。由于该方法基于模糊系统和元启发式优化的使用,它代表了计算机智能在优化分配和能源管理问题上的实现。将该方法应用于具有37个节点的IEEE测试配电系统。所实现的年能量损失减少约为不含分布式发电机组和蓄电池储能系统的电力系统损失的40%。
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引用次数: 1
An experimental facility for latent heat thermal energy storage units 潜热蓄热装置的实验装置
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830278
Héctor Bastida, Amanda Younes, C. E. Ugalde-Loo, Rob Smart, M. Khaljani, N. Jenkins, Babar Baluch
Assessing the performance of thermal energy storage (TES) units beyond software simulation requires testing in a controlled environment, with specific operating modes, and in safe conditions. A test-rig with an energy source and a monitoring system is very helpful to conduct experimental tests to assess the performance of TES systems. To this end, this paper presents an experimental facility for the study of latent heat TES (LH-TES) units. Emphasis is placed on the individual elements of the facility, which includes plumbing components and electric heaters to support the charging process of the TES units. Water is used as the heat transfer fluid (HTF). To demonstrate the capabilities of the test-rig, an LH-TES prototype for heating applications is used. Four different configurations and three operating modes are assessed: charging, discharging and discharging-mixing. The wide range of the experiments possible with the developed facility enables testing of early designs of LH-TES units ahead of deployment in real thermal networks.
除了软件模拟之外,评估热储能(TES)装置的性能需要在受控环境、特定操作模式和安全条件下进行测试。具有能量源和监测系统的试验台对进行测试以评估TES系统的性能非常有帮助。为此,本文设计了一个潜热TES (LH-TES)装置的实验装置。重点放在设施的各个组成部分,包括管道组件和电加热器,以支持TES单元的充电过程。水被用作传热流体(HTF)。为了展示试验台的能力,使用了用于加热应用的LH-TES原型。评估了四种不同的配置和三种操作模式:充电,放电和放电混合。开发的设备可以进行广泛的实验,可以在实际热网络部署之前对LH-TES单元的早期设计进行测试。
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引用次数: 0
Operation Orchestration of Local Energy Communities through Digital Twin: A Review on suitable Modeling and Simulation Approaches 基于数字孪生的地方能源社区运营协同:合适的建模与仿真方法综述
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830264
T. Nguyen-Huu, T. Tran, Minh-Quan Tran, P. Nguyen, J. Slootweg
Increasing the integration of distributed energy resources (DERs) requires an orchestration of the existing centralized management system used for the electricity grid and the emerging distributed ones for local energy communities (LEC). To support this orchestration, design and operation strategies of LECs needs to be analysed, based on a so-called Digital Twin (DT) platform with suitable modeling and simulation techniques. This paper presents a set of requirements needed to develop DT, thus enabling operation orchestration of LECs. Based on these specific requirements, a comprehensive review on the relevant physics-based and data-driven models will be discussed, especially focusing on the flexibility profile of LEC based on data-driven model to support the balancing reserves to the electricity grid.
增加分布式能源(DERs)的整合需要对现有的用于电网的集中式管理系统和新兴的用于地方能源社区(LEC)的分布式管理系统进行协调。为了支持这种编排,LECs的设计和操作策略需要基于所谓的数字孪生(DT)平台进行分析,并采用合适的建模和仿真技术。本文提出了开发DT所需的一组需求,从而实现LECs的操作编排。基于这些具体要求,本文将对相关的物理驱动模型和数据驱动模型进行综合综述,重点讨论基于数据驱动模型的LEC支持电网平衡储备的灵活性概况。
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引用次数: 4
The Role of the Flexibility Aggregator within the Flexibility Value Chain and Associated Research Needs 柔性聚合器在柔性价值链中的作用及相关研究需求
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830367
I. Ilieva, Olav Henrik Skonnord
This paper discusses important issues concerning the role of the flexibility aggregator within the flexibility value chain. Specifically, main business and operational characteristics of the aggregator are being exposed, together with gaps found in earlier research. Consequently, it became possible to extract the key research needs that future scientific work focusing on the flexibility aggregator should pay attention to. Based on the investigation carried, it was concluded that, in the course of future research on the topic, attention should be paid on ensuring robust estimates for flexibility baseline and predictions, adequate risk assessment of various flexibility assets compositions, appropriate usage of timing and pricing, attractive contract regimes and optimized aggregation/disaggregation approaches.
本文讨论了柔性集成商在柔性价值链中的作用问题。具体而言,该聚合器的主要业务和运营特征正在暴露出来,以及早期研究中发现的差距。因此,可以提取出未来以柔性聚合器为重点的科学工作应注意的关键研究需求。根据所进行的调查,得出的结论是,在今后对该专题的研究过程中,应注意确保对灵活性基线和预测的可靠估计,对各种灵活性资产组成进行充分的风险评估,适当使用时间和定价,有吸引力的合同制度和优化的汇总/分解方法。
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引用次数: 0
Converter State-Space Model Estimation Using Dynamic Mode Decomposition 基于动态模态分解的变换器状态空间模型估计
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830201
P. Suskis, J. Zakis, A. Suzdalenko, H. V. Khang, A. Rassõlkin, T. Vaimann, Raimondas Pomarnacki
Power electronic reliability is an important topic for modern industrial electronics. Each component of a power converter has its lifespan, which is affected by many factors like ambient temperature, humidity, load, and thermal cycles of the system. This study focuses on modeling and identifying a state-space model of a power converter under the degradation of passive components, namely the capacitor and inductor. A state-space model of a buck converter is estimated within the framework by dynamic mode decomposition. The algorithm requires 10 to 16 long historical samples of the state variables and the control signal. The numerical results prove that the suggested algorithm can track the system change in time.
电力电子可靠性是现代工业电子学的一个重要课题。电源转换器的每个部件都有其使用寿命,其使用寿命受环境温度、湿度、负载和系统热循环等诸多因素的影响。本研究的重点是在无源元件(即电容和电感)退化的情况下,对功率变换器的状态空间模型进行建模和识别。通过动态模态分解在框架内估计降压变换器的状态空间模型。该算法需要状态变量和控制信号的10 ~ 16个长历史样本。数值结果表明,该算法能够跟踪系统的时间变化。
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引用次数: 2
Adaptive Frequency Control Algorithm In Off-Grid Power System Based On Photovoltaic Diesel Hybrid System And Energy Storage 基于光伏柴油混合系统和储能的离网电力系统自适应频率控制算法
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830511
G. Nesterenko, D. Armeev, Dmitriy Gladkov, V. Zyryanov, Julia V. Mokrousova, A. Myachina
The paper gives the principles of frequency control in off-grid power system based on autonomous hybrid power plant (AHPP). AHPP is intended for territories, which aren’t connected to the centralized electric power supply. Composition of power sources in AHPP includes traditional generators, renewable energy source (RES) and electric energy storage system (EESS). The control principles are designed for limitation frequency deviations in power system, providing the balanced use of the adjustable abilities of power sources. With consideration to the stated requirements and efficiency criteria, the frequency control algorithms, the AHPP control algorithm using energy sources of several types, and algorithm maintaining EESS state of charge during control have been developed. In order to analyze effectiveness of the algorithms, the mathematical model of off-grid power system based on AHPP has been developed in MATLAB/Simulink. AHPP includes diesel generators, solar power plant and EESS. Simulation of AHPP operation in power system with abruptly variable load has been conducted. The results of calculations performed using the model have proved effectiveness of developed control principles from the viewpoint of frequency control quality and maintenance of EESS state of charge during regulation process.
本文给出了基于自主混合电厂的离网电力系统频率控制原理。AHPP适用于没有连接到集中电力供应的地区。AHPP的电源组成包括传统发电机、可再生能源(RES)和电力储能系统(EESS)。控制原理的设计是为了限制电力系统的频率偏差,提供电源的可调能力的平衡使用。根据规定的要求和效率标准,开发了频率控制算法、多类型能源AHPP控制算法和控制过程中保持EESS充电状态的算法。为了分析算法的有效性,在MATLAB/Simulink中建立了基于AHPP的离网电力系统数学模型。AHPP包括柴油发电机、太阳能发电厂和EESS。对负荷突变的电力系统AHPP运行进行了仿真研究。利用该模型进行的计算结果表明,从频率控制质量和调节过程中EESS充电状态保持的角度来看,所开发的控制原理是有效的。
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引用次数: 0
Experimental Validation of Thermal Monitoring Systems for Medium-Voltage Switchgears 中压开关设备热监测系统的实验验证
Pub Date : 2022-05-09 DOI: 10.1109/energycon53164.2022.9830246
Maurizio Zajadatz, M. Suriyah, T. Leibfried
Due to the ongoing energy transition, the need for monitoring solutions in medium-voltage technology is increasing. In this paper, a full-scaled test bed for thermal monitoring of medium-voltage switchgears is presented. The focus of the experiments is on the validation of new sensors and the monitoring solutions they allow. In addition to the existing control system, each switchgear is equipped with a modern data acquisition system. This enables synchronous recording of all measured values and provides all common communication interfaces including communication protocols to read out prototypes of new sensors. In this work, the system is tested in the laboratory, but can be applied in the field without any problems.
由于正在进行的能源转型,对中压技术监测解决方案的需求正在增加。本文介绍了一种用于中压开关设备热监测的全尺寸试验台。实验的重点是验证新的传感器和它们允许的监测解决方案。除了现有的控制系统外,每个开关柜还配备了现代化的数据采集系统。这可以同步记录所有测量值,并提供所有常见的通信接口,包括通信协议,以读出新传感器的原型。在这项工作中,系统是在实验室测试,但可以在现场应用没有任何问题。
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引用次数: 0
期刊
2022 IEEE 7th International Energy Conference (ENERGYCON)
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