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2022 IEEE Sustainable Power and Energy Conference (iSPEC)最新文献

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Voltage control of offshore wind farm considering reactive ability of electrochemical energy storage 考虑电化学储能反应能力的海上风电场电压控制
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10032975
Haitao Wu, Jian Yu, Jun Liu, Rui Mei, Xiangmei Ji, Hong Wang
With the integration of power electronic equipment, the voltage stability control of new energy based power system is increasingly complex. To improve the voltage stability of offshore wind farm, a voltage control method is proposed based on the reactive power coordination of wind farm and electrochemical energy storage. Firstly, this paper investigates the basic structure of offshore wind farm combined with electrochemical energy storage. Secondly, the control strategy of power conversion system (PCS) and reactive power operating region of wind farm are formed. Meanwhile, the detailed control method and reactive power operating region of electrochemical energy storage are also studied. Thirdly, to solve the problem of voltage variation of the point of common coupling (PCC), a novel voltage control method is proposed by coordinating the reactive power ability of offshore wind farm and electrochemical energy storage. Based on the actual offshore wind farm in Jiangsu Province, we build the simulation model in PSCAD. According to the simulation results, the proposed voltage control can improve the voltage stability with the utilization of energy storage under load fluctuation conditions.
随着电力电子设备的一体化,新能源电力系统的电压稳定控制日益复杂。为提高海上风电场电压稳定性,提出了一种基于风电场无功协调和电化学储能的电压控制方法。首先,研究了电化学储能结合的海上风电场的基本结构。其次,形成了风电场功率转换系统和无功运行区域的控制策略;同时,对电化学储能的详细控制方法和无功运行区域进行了研究。第三,针对共耦合点电压变化问题,提出了一种协调海上风电场无功能力和电化学储能的新型电压控制方法。结合江苏海上风电场的实际情况,在PSCAD中建立了仿真模型。仿真结果表明,所提出的电压控制方法可以在负荷波动条件下利用储能提高电压稳定性。
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引用次数: 0
De-Re-Coupling Scheme-based Model Predictive Control of a Three-phase High-Frequency Link Matrix Converter 基于去耦合方案的三相高频链路矩阵变换器模型预测控制
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10032976
Tianran Fu, Zhaoyang Yan, E. Pashajavid, Liaqat Ali
This paper presents a model predictive control (MPC) strategy for a three-phase high-frequency link matrix inverter (HFLMI). The de-re-coupling concept will be utilised to decompose the matrix converter composed of bidirectional switches into two conventional inverters with unidirectional switches. Then, a finite control set MPC (FCS-MPC) scheme is developed to generate switching commands of the switches, successfully regulating output current following the given reference trajectory. The proposed de-re-coupling-based MPC method reduces the modulation procedure’s complexity for HFLMIs and can efficiently deal with voltage spikes caused by transformer leakage inductance. Further, the proposed method requires comparatively less computation. The efficacy of the developed strategy is evaluated using various Matlab/Simulink simulation cases.
提出了一种三相高频链路矩阵逆变器的模型预测控制策略。利用去耦合的概念将由双向开关组成的矩阵变换器分解为两个具有单向开关的常规逆变器。然后,提出了一种有限控制集MPC (FCS-MPC)方案来生成开关的开关命令,成功地按照给定的参考轨迹调节输出电流。提出的基于去重耦合的MPC方法降低了hflmi调制过程的复杂度,并能有效地处理变压器漏感引起的电压尖峰。此外,该方法的计算量相对较少。利用Matlab/Simulink仿真实例对所开发策略的有效性进行了评估。
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引用次数: 1
Effects of various accelerated corrosion conditions on corrosion behavior of galvanized steel in marine atmospheric environment 不同加速腐蚀条件对海洋大气环境中镀锌钢腐蚀行为的影响
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10033015
Xunping Yan, Yun Cong, Gencheng Wang, Zhenpeng Zhang
In this work, the salt spray test and applied current accelerated corrosion test were used to simulate the accelerated corrosion process of the ocean atmosphere. The electrochemical tests were conducted to study the effect of different concentrations of NaC1 solution (3.5%, 5% and 10%) and immersion time (0, 24, 48 and 96 h) on the corrosion behavior of galvanized steel in marine atmospheric environment, and a variety of analysis methods were used to study the corrosion behavior of galvanized steel in the simulated ocean atmosphere. The effects of static immersion test with various concentrations of NaC1 solution on the corrosion behavior of galvanized steel in marine atmospheric environment were further studied. In addition, this work can guide and evaluate the service life of transmission towers.
本文采用盐雾试验和外加电流加速腐蚀试验模拟海洋大气的加速腐蚀过程。通过电化学试验研究了不同浓度的NaC1溶液(3.5%、5%和10%)和浸泡时间(0、24、48和96 h)对镀锌钢在海洋大气环境中腐蚀行为的影响,并采用多种分析方法研究了镀锌钢在模拟海洋大气中的腐蚀行为。进一步研究了不同浓度NaC1溶液的静态浸泡试验对镀锌钢在海洋大气环境中腐蚀行为的影响。此外,该工作还可以指导和评估输电塔的使用寿命。
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引用次数: 0
Feasibility Analysis of Implementing Hybrid Powered Electric Vehicle Charging Stations in Sarawak 沙捞越实施混合动力电动汽车充电站的可行性分析
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10032990
A. Haidar, Lim Wei Han, T. Ahfock
The transportation sector in Sarawak completely depends on fossil fuel which produces a high quantity of greenhouse gases. A suitable design of charging stations for electric vehicles (EVs) equipped with grid-integrated renewable energy resources (RERs) can help in addressing this issue. This paper proposes to enhance the execution requirements of the hybrid-powered electric vehicle charging stations (EVCSs) in Sarawak. A generalized approach for modelling a renewable energy-based hybrid microgrid equipped with EVCS is presented in detail. Four types of microgrid configurations with biomass and solar photovoltaic (PV) systems have been studied to find the optimal size of each component feasible for EVCS. Each design of the hybrid-powered EVCS has been analyzed in terms of economic and environmental viability using the climate data with associated monetary data. The analysis shows that the cost of lowering emission to zero is directly proportional to the total net present cost (RM 259, 0SS) when using PV microgrid-powered EVCS. The outcome of this paper provides insight for policymakers on the technical and financial benefits of EVCS deployment. It also promotes the industry of Plug-in Electric Vehicles (PEVs) in Malaysia.
沙捞越的运输部门完全依赖于产生大量温室气体的化石燃料。为配备并网可再生能源的电动汽车设计合适的充电站有助于解决这一问题。本文提出了提高沙捞越州混合动力电动汽车充电站的执行要求。详细介绍了一种基于可再生能源的混合微电网的建模方法。研究了生物质能和太阳能光伏(PV)系统的四种微电网配置,以找到EVCS可行的每个组件的最佳尺寸。利用气候数据和相关的货币数据,对混合动力EVCS的每个设计进行了经济和环境可行性分析。分析表明,当使用光伏微网供电的EVCS时,将排放降低到零的成本与总净当前成本(rm259, 0SS)成正比。本文的结果为决策者提供了有关EVCS部署的技术和财务效益的见解。它还促进了马来西亚的插电式电动汽车(pev)行业。
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引用次数: 0
A Novel Sequence to Sequence based CNN-LSTM Model for Long Term Load Forecasting 一种新的基于序列对序列的CNN-LSTM长期负荷预测模型
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10033062
Osaka Rubasinghe, Xinan Zhang, Tat Kei Chau, T. Fernando, H. Iu
Long term load forecasting (LTLF) models play an important role in the strategic planning of power systems around the globe. Obtaining correct decisions on power network expansions or restrictions based on future predictions help substantially reduce the infrastructure cost of the power grid. The classical approach of LTLF limits to the use of artificial neural networks (ANN) or regression based approaches along with a large set of historical demand, weather, economy and population data. Considering the drawbacks of these classical methods, this paper introduces a novel sequence to sequence (seq2seq) deep neural network (DNN) model to forecast the monthly peak demand for a time horizon of three years. Selecting the correct time interval plays a key role in LTLF. Therefore, using monthly peak demand avoids unnecessary model complications while providing all the essential information for a good long term strategical planning. The accuracy of the proposed method is verified by the load data of “New South Wales (NSW)”, Australia. The numerical results validate that the proposed method has achieved higher prediction accuracy compared to the existing work.
长期负荷预测(LTLF)模型在全球电力系统的战略规划中发挥着重要作用。根据对未来的预测,对电网的扩展或限制做出正确的决策,有助于大幅降低电网的基础设施成本。LTLF的经典方法限制了人工神经网络(ANN)或基于回归的方法以及大量历史需求、天气、经济和人口数据的使用。考虑到这些经典方法的不足,本文引入了一种新的序列对序列(seq2seq)深度神经网络(DNN)模型来预测三年时间范围内的月峰值需求。选择正确的时间间隔在LTLF中起着关键作用。因此,使用月度峰值需求可以避免不必要的模型复杂性,同时为良好的长期战略规划提供所有必要的信息。通过澳大利亚新南威尔士州(NSW)的负荷数据验证了该方法的准确性。数值结果表明,该方法比现有方法具有更高的预测精度。
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引用次数: 0
Expanded Hydrogen and Ammonia Power Generation for Hydrogen Storage with Unit Commitment 扩大氢和氨发电的储氢与单位承诺
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10033058
Rena Jimbo, N. Yamaguchi, Yusuke Manabe
Because of global warming, interest in low carbonization applications has grown worldwide. In Japan, efforts are underway to build a power system with low carbonization because it is necessary to reduce emissions in the electric power sector, which has the highest rate of CO2 emissions. As ammonia and hydrogen are known as carbon-free fuels, their use as fuels has considerable attention. An important concern in Japan is its low energy self-sufficiency ratio. Although introducing renewable energy has improved the energy self-sufficiency rate, it is necessary to store the surplus power because renewable energy sources do not have a supply-demand adjustment function. In this study, we propose a model that can optimize the operating status of power plants while enhancing the domestic manufacturing rate of ammonia. To verify the proposed model, we performed numerical simulations for eight cases.
由于全球变暖,对低碳化应用的兴趣在世界范围内增长。在日本,为了减少二氧化碳排放量最高的电力行业的排放,正在努力建设低碳化的电力系统。由于氨和氢是众所周知的无碳燃料,它们作为燃料的使用受到了相当大的关注。日本的一个重要问题是能源自给率低。虽然可再生能源的引入提高了能源自给率,但由于可再生能源不具有供需调节功能,因此需要储存多余的电力。在本研究中,我们提出了一个模型,可以优化电厂的运行状态,同时提高氨的国产化率。为了验证所提出的模型,我们对8个案例进行了数值模拟。
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引用次数: 0
Autonomous Distributed Frequency Control for the Management of Energy Storage Systems in Microgrid 微电网储能系统管理的自主分布频率控制
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10033002
N. Yorino, Kazuya Amimoto, Y. Sasaki, Y. Zoka, Hiromu Inami, S. Ogawa
This paper proposes a novel frequency control method based on autonomous distributed control scheme. The operating frequency is controlled by battery energy storage systems (BESSs) in AC microgrid (MG) where an efficient coordination of BESS’s state-of-charges (SOCs) is performed without communications. The BESS-SOCs of the individual prosumers are automatically managed to a same value, while the frequency is deviated in a specified bandwidth as a function of the total BESS-SOCs in MG. The proposed method can increase the reliability of MG operation specially in emergency state where communication is lost. The method is useful not only for the management of BESS-SOCs but also for any distributed generations (DGs) with limited energy storages. The simulation results show that the effectiveness of the proposed method where the MG survives until all energy storages are consumed.
提出了一种基于自治分布式控制方案的频率控制方法。工作频率由交流微电网(MG)中的电池储能系统(BESS)控制,在交流微电网(MG)中,BESS的充电状态(soc)在没有通信的情况下进行有效协调。单个产消者的bess - soc被自动管理到相同的值,而频率在指定的带宽内偏离,作为MG中总bess - soc的函数。该方法能有效地提高MG运行的可靠性,特别是在通信中断的紧急状态下。该方法不仅适用于bess - soc的管理,而且适用于任何储能有限的分布式代(dg)。仿真结果表明了所提出的方法的有效性,其中MG存活到所有储能消耗殆尽。
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引用次数: 0
Low-carbon economic optimal dispatch strategy of integrated energy system considering electric-heat flexible load and carbon trading 考虑热电柔性负荷和碳交易的综合能源系统低碳经济最优调度策略
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10033052
Xinfeng Jiang, Q. Ai, Yun Chen, Jiayu Wang
In order to improve the consumption of renewable energy, stabilize load fluctuations and control total carbon emissions, this paper proposes a low-carbon economic optimal dispatch strategy of integrated energy system (IES) considering electric-heat flexible load and carbon trading. Combined with the curtailable, shiftable and transferable characteristics of flexible load on the demand side, the strategy establishes an optimal dispatch model under the ladder-type carbon trading mechanism, which comprehensively considers the operation cost, flexible load dispatch cost and carbon trading cost. The analysis of the case study proves that the participation and interaction of flexible electric and thermal loads can significantly improve the consumption rate of renewable energy, realize load peak shaving and valley filling, and relieve peak power supply pressure.
为了提高可再生能源的利用率,稳定负荷波动,控制碳排放总量,本文提出了考虑电-热柔性负荷和碳交易的综合能源系统低碳经济最优调度策略。该策略结合需求侧柔性负荷的可剪性、可移性和可转移性,综合考虑运行成本、柔性负荷调度成本和碳交易成本,建立了阶梯型碳交易机制下的最优调度模型。案例分析证明,柔性电热负荷的参与与互动,可以显著提高可再生能源的消纳率,实现负荷调峰填谷,缓解尖峰供电压力。
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引用次数: 1
Optimal reactive power allocation method for an offshore wind farm based on novel power operation region of PMSG 基于PMSG新功率运行区域的海上风电场无功优化分配方法
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10033075
Zhichao Yang, Bingtuan Gao, Z. Cao
To mitigate the voltage fluctuation of offshore wind farm with long-distance transmission, an optimal reactive power allocation method is proposed for permanent magnet synchronous generator-based (PMSG-based) wind farm participating in reactive power regulation of power system. Considering the wind conditions and maximum capacity of grid-side converter, this paper investigates the novel power operation region of wind turbine which depicts the maximum reactive power upper limit of single PMSG. Further, since each wind turbine can produce different power capacity as result of wake effect and collection line, an optimization strategy is designed for reactive power allocation under the premise that the total active power remains unchanged. By adjusting the power of each PMSG within power operation region, the proposed strategy can fully improve the voltage support ability without using static var generator (SVG). Case study is carried out to verify the advantages of proposed method in PSCAD.
为缓解海上风电场长距离输电电压波动,提出了一种永磁同步发电机(pmsg)风电场参与电力系统无功调节的最佳无功分配方法。考虑风力条件和电网侧变流器的最大容量,研究了风电机组的新型功率运行区域,该区域描述了单个PMSG的最大无功功率上限。进一步,由于尾迹效应和集流线的影响,每台风力机产生的功率容量不同,在总有功功率不变的前提下,设计了无功功率分配的优化策略。该策略通过调整各PMSG在电力运行区域内的功率,可以在不使用静态无功发电机(SVG)的情况下充分提高电压支撑能力。通过实例验证了该方法在PSCAD中的优越性。
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引用次数: 0
Portable IoT Solution for HRES Integration 用于HRES集成的便携式物联网解决方案
Pub Date : 2022-12-04 DOI: 10.1109/iSPEC54162.2022.10033076
M. Trape, S. K. Shah, A. Hellany, M. Nagrial, J. Rizk
With recent technological enhancements being made in Renewable Energy Systems, resulting in distinct financial and environmental benefits, the implementation of Hybrid Renewable Energy Systems (HRES) is becoming a popular approach to resolve power reliability issues. These may be intrinsically related to certain types of renewable energy systems, especially when meteorological conditions are considered. Improving the reliability index that leads to better power quality being delivered is a trend in complex systems combining several sub-systems operating under a single grid connection. The solution presented in this paper involves a portable monitoring station using Internet of Things (IoT), with a flexible communication bus and signal conditioning devices to monitor and communicate with any system which might compose an HRES. Consequently, this process can assist with any troubleshooting, or data analytics required to monitor the performance and integration of these systems without relying on stationary infrastructure for its implementation.
随着近年来可再生能源系统的技术进步,在经济和环境方面取得了显著的效益,混合可再生能源系统(HRES)的实施正成为解决电力可靠性问题的一种流行方法。这些可能与某些类型的可再生能源系统有内在联系,特别是考虑到气象条件时。提高可靠性指标,从而获得更好的电能质量,是在单一电网连接下由多个子系统组成的复杂系统的发展趋势。本文提出的解决方案涉及使用物联网(IoT)的便携式监测站,具有灵活的通信总线和信号调理设备,可以与任何可能构成HRES的系统进行监控和通信。因此,这个过程可以帮助进行任何故障排除,或者监控这些系统的性能和集成所需的数据分析,而不依赖于固定的基础设施来实现。
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引用次数: 0
期刊
2022 IEEE Sustainable Power and Energy Conference (iSPEC)
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