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2017 19th International Conference on Intelligent System Application to Power Systems (ISAP)最新文献

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Intelligent system for automatic performance evaluation of distribution system operators 智能配电系统运营商绩效自动评估系统
R. Teive, E. A. C. Neto, F. L. R. Mussoi, A. Rese, J. Coelho, F. F. Andrade, F. L. Cardoso, F. Nogueira, J. P. Parreira
The performance evaluation of distribution network operators is essential for the electrical utilities to know how prepared the operators are to execute their operation standards and rules, searching for minimizing the time of power outage, after some contingency. The performance of operators can be evaluated by the impact of their actions on several technical and economic indicators of the distribution system. This issue is a complex problem, whose solution involves necessarily some expertise and a multi-criteria evaluation. This paper presents a Tutorial Expert System (TES) for performance evaluation of electrical distribution network operators after a given contingency in the electrical network. The proposed TES guides the evaluation process, taking into account technical, economic and personal criteria, aiding the quantification of these criteria. A case study based on real data demonstrates the applicability of the performance evaluation procedure of distribution network operators.
配电网运营商绩效评估是电力公司了解配电网运营商在突发事件发生后执行其运行标准和规则,寻求最大限度减少停电时间的准备情况的关键。运营商的业绩可以通过他们的行动对配电系统的几个技术和经济指标的影响来评估。这是一个复杂的问题,其解决方案必然涉及一些专业知识和多标准评估。本文提出了一种指导专家系统(TES),用于在给定电网事故发生后对配电网运营商进行性能评估。拟议的工商业污水附加费标准指导评估过程,考虑到技术、经济和个人标准,并协助量化这些标准。以实际数据为例,验证了配电网运营商绩效评价方法的适用性。
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引用次数: 5
Methodology for islanding operation of distributed synchronous generators 分布式同步发电机孤岛运行方法学
P. J. Colorado, D. L. Silva, A. Grilo
There is an increase interest for islanding operation of distributed generators (DG) due to economical and technical reasons. However, the control strategy applied to the DG is different for grid connected and islanding conditions, which demands identifying the DG connection status. This paper presents a methodology for detecting the DG connection status. The methodology is able to detect the occurrence of an islanding event or the reconnection of the DG to the utility grid. The developed method is based on a disturbance in the torque applied to the generator and it does not depend on communication systems. According to the response of this disturbance, it will be possible to identify whether the DG is connected to the utility grid or not.
由于经济和技术原因,人们对分布式发电机组的孤岛运行越来越感兴趣。然而,在并网和孤岛条件下,对DG的控制策略是不同的,这就需要对DG的连接状态进行识别。本文提出了一种检测DG连接状态的方法。该方法能够检测到孤岛事件的发生或DG与公用事业电网的重新连接。所开发的方法是基于施加在发电机上的转矩中的扰动,并且不依赖于通信系统。根据该扰动的响应,可以识别DG是否连接到公用电网。
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引用次数: 3
Sensitivity guided genetic algorithm for placement of distributed energy resources 基于灵敏度的分布式能源配置遗传算法
Yuting Tian, Niannian Cai, M. Benidris, Atri Bera, J. Mitra, C. Singh
This paper introduces an enhanced Genetic Algorithm (GA) that uses the concept of sensitivity analysis to develop an encoding strategy for improving the computational efficiency of the search process. The objective is to determine the optimal placement of distributed energy resources (DERs) with minimum generation cost. Locational Marginal Price (LMP) is employed as an indicator to quantify the need for additional generation at candidate locations. LMP at each node is determined from Lagrange multipliers associated with the power balance equation at that node. By renumbering and encoding the locations based on their LMP ranks, desired candidate locations are gathered and encoded to share more common genes. Then, genetic algorithm is utilized along with the AC optimal power flow model to search for the optimal locations for distributed energy resources with varied sizes. The method is demonstrated on several test systems, including IEEE 14,30,57 and 118 bus test systems. The placement of DERs with minimum generation cost is found and the results validate the improvement in convergence speed.
本文介绍了一种改进的遗传算法(GA),该算法利用敏感性分析的概念来开发一种编码策略,以提高搜索过程的计算效率。目标是以最小的发电成本确定分布式能源(DERs)的最佳布局。区位边际价格(LMP)被用作量化候选地点额外发电需求的指标。每个节点的LMP由与该节点的功率平衡方程相关的拉格朗日乘数确定。通过根据LMP等级对位置重新编号和编码,收集所需的候选位置并对其进行编码以共享更多的共同基因。然后,利用遗传算法结合交流最优潮流模型,寻找不同规模分布式能源的最优位置;该方法在IEEE 14、30、57和118总线测试系统上进行了验证。找到了具有最小生成成本的der的位置,结果验证了收敛速度的提高。
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引用次数: 3
Data-driven energy management architecture for more-electric aircrafts 数据驱动的电动飞机能源管理架构
M. Kamal, Jin Wei, G. Mendis
This paper proposes an attack-resilient ANFIS-DBN based energy management architecture for a hybrid emergency power system of More-Electric Aircrafts (MEAs). Our proposed architecture develops a Deep Belief Network (DBN) stacked Adaptive Neuro-Fuzzy Interference System (ANFIS)-based method to evaluate the integrity of the power output of the fuel-cell in the fuel-cell based hybrid auxiliary power unit (APU), which is vulnerable to the cyber-attacks and critical for the effective energy management and emergency control. Our ANFIS-DBN-based method achieves the integrity evaluation by leveraging the real-time measures on the State of Charge (SOC) of the battery, power output of the ultra-capacitor and the load profile. In our simulation, we evaluate the performance of our proposed ANFIS-DBN-based method to support the integrity of the Energy Management Strategies (EMSs) used in hybrid emergency power system for more-electric aircrafts by using MATLAB/Simulink. Our simulation results illustrate the effectiveness of our proposed method in effectively evaluating the integrity of critical data and achieving resilient control.
针对多电动飞机混合应急电源系统,提出了一种基于anfiss - dbn的抗攻击能量管理架构。本文提出了一种基于深度信念网络(DBN)堆叠自适应神经模糊干扰系统(ANFIS)的方法来评估燃料电池混合辅助动力装置(APU)中燃料电池输出功率的完整性,该方法容易受到网络攻击,对有效的能量管理和应急控制至关重要。我们基于anfiss - dbn的方法通过利用电池的荷电状态(SOC)、超级电容器的输出功率和负载分布的实时测量来实现完整性评估。在我们的仿真中,我们利用MATLAB/Simulink评估了我们提出的基于anfiss - dbn的方法的性能,以支持多电动飞机混合应急电源系统中使用的能量管理策略(ems)的完整性。我们的仿真结果证明了我们提出的方法在有效评估关键数据完整性和实现弹性控制方面的有效性。
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引用次数: 0
Primary frequency regulation in islandec microgrids through droop-based generation and demand control 基于下垂发电和需求控制的孤岛微电网一次频率调节
Andrew Klem, Kaveh Dehghanpour, H. Nehrir
Conventionally, droop control has been used for primary frequency control, allowing generators to share imbalances in generation and load. This paper proposes the use of different types of droop-based control logics for load regulation to turn on or off groups of loads to help restore the system power balance. The proposed droop-based controllers are used by an aggregator to identify individual loads that can be used for demand response (DR) and control them according to their assigned priority. This procedure incorporates an incentive provided by the utility to the customer to allow control of their loads. Also, we will show that droop control can be used on a variety of resources in an MG at the same time, including energy storage system (ESS), generator, and loads to cooperatively contribute to frequency stabilization. Numerical experiments presented show that the proposed method is an effective way to prevent large frequency deviations due to variations in renewable generation and power contingencies in islanded MGs.
传统上,下垂控制被用于一次频率控制,允许发电机分担发电和负载的不平衡。本文建议使用不同类型的基于下垂的控制逻辑进行负载调节,以打开或关闭负载组,以帮助恢复系统功率平衡。聚合器使用所提出的基于下垂的控制器来识别可用于需求响应(DR)的单个负载,并根据分配的优先级对其进行控制。这一程序结合了公用事业公司向用户提供的一种激励,以允许控制其负载。此外,我们将展示下垂控制可以同时用于MG中的各种资源,包括储能系统(ESS),发电机和负载,以协同实现频率稳定。数值实验结果表明,该方法能够有效地防止孤岛电网中由于可再生能源发电变化和电力突发事件造成的较大频率偏差。
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引用次数: 4
A semi-analytical method to solve chance constrained stochastic economic dispatch with demand response providers 有需求响应提供者的机会约束随机经济调度的半解析方法
Hao Ming, Le Xie
This paper addresses a computational issue of solving stochastic economic dispatch with the participation of uncertain demand response providers. In particular, we study the linear constraints in the chance constrained formulation of the dispatch problem. A semi-analytical method is proposed to simplify the formulation and computation of chance constraints in the economic dispatch problem. Compared with existing methods such as deterministic, analytical method and sample-based approaches, the advantage of the semi-analytical method lies in its lower computational cost, controllable level of risk and low information exchange between agents and the independent system operator. Numerical results on the IEEE 14 bus system with two demand response providers illustrate the potential efficacy of the proposed method.
本文研究了不确定需求响应提供者参与下求解随机经济调度的计算问题。特别地,我们研究了调度问题的机会约束公式中的线性约束。为了简化经济调度问题中机会约束的表述和计算,提出了一种半解析方法。与现有的确定性方法、解析方法和基于样本的方法相比,半解析方法的优势在于计算成本低、风险可控、agent与独立系统操作者之间的信息交换少。在具有两个需求响应提供者的IEEE 14总线系统上的数值结果表明了所提方法的潜在有效性。
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引用次数: 1
A stochastic game framework for reactive power reserve optimization and voltage profile improvement 无功储备优化与电压剖面改进的随机博弈框架
Md Arifin Arif, M. Ndoye, G. Murphy, K. Aganah
Voltage control and reactive power management are two critically important criteria for ensuring quality power delivery and system stability in the grid. As the two issues are coupled, they have been generally tackled simultaneously. In this paper, we utilize the concept of stochastic game modeling from game theory to develop a novel algorithm to solve the multi-objective optimization (MOO) problem of reactive power reserve maximization and voltage profile improvement. The MOO is first reduced to a single objective optimization (SOO) problem using the weighted-sum (or scalarization method). The solution to the SOO problem is then viewed as the equilibrium solution of a stochastic game. The algorithm that implements our proposed solution concept is validated in MATLAB/MATPOWER using the IEEE-39 (New England) bus system model, and very encouraging results are reported.
电压控制和无功管理是保证电网供电质量和系统稳定的两个至关重要的标准。由于这两个问题是结合在一起的,它们通常是同时解决的。本文利用博弈论中的随机博弈建模概念,提出了一种求解无功储备最大化和电压线优化的多目标优化算法。首先使用加权和(或标量化方法)将mooo简化为单目标优化(SOO)问题。然后将SOO问题的解视为随机博弈的均衡解。采用IEEE-39(新英格兰)总线系统模型,在MATLAB/MATPOWER中对算法进行了验证,得到了令人鼓舞的结果。
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引用次数: 3
Model reduction for fast assessment of grid impact of high penetration PV 快速评估高渗透光伏发电对电网影响的模型简化
Yazhou Jiang, N. Acharya, Yan Pan
A key challenge in properly analyzing the impact of solar photovoltaics (PV) during planning, interconnection and operation in the distribution grid is computational complexity. Such studies require the use of Quasi-Steady-Time-Series (qSTS) power flow to capture the complex interaction of PV with voltage regulating equipment and protection devices and a large number of scenario studies are needed to capture location specific constraints and uncertainties. In addition, a typical distribution feeder can have thousands of nodes and there can be thousands of such feeders in a given utility system. To solve this problem, a new and systematic method for distribution network reduction is proposed. The objective is to reduce the size of distribution systems by more than 80% while preserving the accuracy of power flow results. To this end, an extended Ward-equivalent method has been proposed to create an equivalent circuit. Moreover, load and PV aggregation based on the backward sweep method has been developed to further simplify the feeder. The proposed method is tested with a modified IEEE 123-node distribution test system. The simulation results demonstrate the high efficiency and accuracy of the proposed approach for distribution network reduction.
要正确分析太阳能光伏发电在配电网规划、并网和运行过程中的影响,一个关键的挑战是计算复杂性。此类研究需要使用准稳定时间序列(qSTS)潮流来捕获光伏与电压调节设备和保护装置的复杂相互作用,并且需要大量的场景研究来捕获特定位置的约束和不确定性。此外,典型的配电馈线可以有数千个节点,并且在给定的公用事业系统中可以有数千个这样的馈线。为解决这一问题,提出了一种新的配电网系统精简方法。目标是将配电系统的规模减少80%以上,同时保持潮流结果的准确性。为此,提出了一种扩展的ward等效方法来创建等效电路。此外,为了进一步简化馈线系统,还提出了基于反向扫描的负荷与光伏聚合方法。在改进的IEEE 123节点分布测试系统上对该方法进行了测试。仿真结果表明,该方法具有较高的效率和准确性。
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引用次数: 6
Intelligent microgrid power management using the concept of Nash bargaining solution 采用纳什议价概念的智能微电网电力管理解决方案
Kaveh Dehghanpour, H. Nehrir
In this paper, we propose a decision model for multiobjective power management of a generic MicroGrid (MG). The concept of Nash Bargaining Solution (NBS) from game theory is used by the central MG control unit to dispatch different resources within the MG. Using NBS, the MG is guaranteed to reach a solution on the Pareto-front of the multiobjective power management optimization problem. This solution is "unique" and introduces a "fair" balance among the different objective functions of the MG. Hence, through NBS, a multiobjective power management procedure is designed for MGs that can be implemented efficiently in real-time. Simulation results show the applicability of the proposed method to multiobjective MG power management.
本文提出了一种通用微电网多目标电力管理决策模型。中央MG控制单元采用博弈论中的纳什议价解决方案(NBS)概念来调度MG内部的不同资源。利用NBS,保证了多目标电力管理优化问题的Pareto-front解。这种解决方案是“独特的”,并在MG的不同目标功能之间引入了“公平”的平衡。因此,通过NBS,设计了一个多目标电源管理程序,可以有效地实时实现。仿真结果表明,该方法适用于多目标MG电源管理。
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引用次数: 5
A comparison of placement methods for collecting PMU data used in angular stability detection 角稳定性检测中PMU数据采集放置方法的比较
J. López, Chan-nan Lu
Phaser Measurement Units (PMUs) enable several online critical applications, such as State Estimation (SE) and stability monitoring enhancement where the dynamic behavior of the electric network is supervised in order to maintain a reliable power supply. However, due to the cost of PMUs, identifying key locations for installation is essential. Several PMU allocation algorithms have been suggested. Two PMU placement formulations for enhancing the instability detection are studied and their performance is assessed. These are the Lyapunov Exponent and the Correlation Matrix based methods. Simulated PMU data obtained from the optimal locations are tested in an intelligent system stability detection framework. Test results on a practical 1646 bus network are presented.
相位测量单元(pmu)支持一些在线关键应用,例如状态估计(SE)和稳定性监测增强,其中监督电网的动态行为以保持可靠的电源供应。然而,由于pmu的成本,确定安装的关键位置是必不可少的。提出了几种PMU分配算法。研究了两种增强不稳定性检测的PMU放置配方,并对其性能进行了评估。这些是基于李雅普诺夫指数和相关矩阵的方法。在智能系统稳定性检测框架中对从最优位置获得的模拟PMU数据进行了测试。给出了在实际1646总线网络上的测试结果。
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引用次数: 0
期刊
2017 19th International Conference on Intelligent System Application to Power Systems (ISAP)
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