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2021 6th Asia Conference on Power and Electrical Engineering (ACPEE)最新文献

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Collaborative expansion planning for power grid and generators enabling flexibility enhancement 电网和发电机协同扩展规划,增强灵活性
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9436883
Jing Gou, Ao Li, Yunkai Lei, Yunche Su, Yin Liu, You-bo Liu, Fuyang Wang
Today’s power systems are subject to various challenges arising from the large-scale integration of renewable energy sources (RES), especially wind energy production, which not only improves the economic efficiency of production capacity, but also brings higher demand for grid flexibility. At the same time, the process of electric power marketization has been promoted. The mechanism of ancillary services market, especially peak regulation market, has been increasingly sounder than before. In this paper, a power grid-generator collaborative expansion planning for the deep peak regulating market is proposed. The upper model is the planning layer model to determine the line to be selected and unit reconstruction. Based on the network frame of upper layer, a real time clearing model for peak regulation market is presented in lower layer, which pass the returns on investment to the planning model. Finally, a case analysis and numerical results show the effectiveness of the proposed planning and clearing model.
当今的电力系统面临着可再生能源特别是风能发电大规模并网所带来的各种挑战,这不仅提高了发电能力的经济效益,也对电网的灵活性提出了更高的要求。与此同时,电力市场化的进程也得到了推进。辅助服务市场特别是调峰市场机制日趋健全。针对深调峰市场,提出了一种电网-发电机协同扩容方案。上层模型为规划层模型,用于确定所选线路和单元重构。在上层网络框架的基础上,底层提出了调峰市场的实时清算模型,将投资收益传递给规划模型。最后,通过实例分析和数值计算,验证了所提出的规划与清理模型的有效性。
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引用次数: 0
Research on Measures to Reduce the Lightning Breakdown of 10kV Distribution Lines 减少10kV配电线路雷击击穿的措施研究
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9437000
Xiaotong Huang, Jibiao He, Yan-long Yang, Chuangsheng Chen, Ruiqiang Wang, Ya-fang Chen
The difference between lightning protection and distribution line is analyzed in the paper, which shows that induction lightning protection is the main cause of distribution line. The influence of the heat generated by lightning current and power frequency current on the distribution line is calculated. The results show that the lightning current does not cause the wire breaking, and the continuous power frequency current is the cause of the power distribution line breaking. The simulation model of overhead transmission line in distribution network is established and the induced lightning overvoltage on the line is calculated by simulation. Considering the working conditions of different grounding resistances, the paper calculates and compares the limiting effect of lightning arrester and ground wire on the overvoltage of the circuit. The results show that the lightning arrester has better lightning limiting effect than the two other lightning protection measures. however, the ground resistance needs to be kept low to ensure the lightning arrester is effective.
分析了雷电保护与配电线路的区别,指出感应雷电保护是配电线路的主要原因。计算了雷电电流和工频电流产生的热量对配电线路的影响。结果表明,雷电电流不会引起配电线路断线,而持续工频电流是配电线路断线的原因。建立了配电网架空输电线路的仿真模型,通过仿真计算了线路上的感应雷击过电压。考虑不同接地电阻的工况,计算比较了避雷器和地线对电路过电压的限制作用。结果表明,避雷器比其他两种防雷措施具有更好的限雷效果。然而,接地电阻需要保持低,以确保避雷器是有效的。
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引用次数: 0
Research on Data Intelligent Retrieval Method Oriented to Unified Business Center of Power System 面向电力系统统一业务中心的数据智能检索方法研究
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9437027
Qikun Yang, Yufei Wang, Yiqing Yin
According to the current trends in the construction of mid-stations in power system business, and for the problem of insufficient retrieval of data applications, an intelligent retrieval method for grid data based on mid-stations is proposed to achieve the goal of rapid retrieval in huge power system cluster data. This method establishes a complete functional architecture, and it can meet the data retrieval requirements of various departments of the power grid. On the other hand, the method has universal applicability to business centers and plays an important role in the connection of various professional data in the power grid. and can well solve the data fusion problem between the stock system and the incremental system. It has a good reference significance and promotion value for the current power grid digitization. Starting from the design architecture, this paper puts forward a method to realize accurate data retrieval based on the current development status of large-scale power systems, and it also analyzes the rationality and feasibility from two dimensions of business needs and information system construction. At the same time, the article also makes a statistical analysis of the specific realization process of some business functions and the optimization effect based on this method.
针对当前电力系统业务中站建设的趋势,以及数据应用检索不足的问题,提出了一种基于中站的电网数据智能检索方法,以实现庞大电力系统集群数据快速检索的目标。该方法建立了完整的功能体系结构,能够满足电网各部门的数据检索需求。另一方面,该方法对商业中心具有普遍适用性,在电网中各种专业数据的连接中发挥着重要作用。并能很好地解决存量系统与增量系统之间的数据融合问题。对当前电网数字化建设具有很好的参考意义和推广价值。本文从设计体系结构入手,结合目前大型电力系统的发展现状,提出了一种实现准确数据检索的方法,并从业务需求和信息系统建设两个维度分析了其合理性和可行性。同时,本文还对部分业务功能的具体实现过程和基于该方法的优化效果进行了统计分析。
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引用次数: 0
Multi-objective Optimization Planning of Distribution Network Topology Considering Total Supply Capability and Voltage Deviation 考虑总供电能力和电压偏差的配电网拓扑多目标优化规划
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9437029
Bin Sun, X. Fang, X. Song, Jialei Zhou, Sitian Zhou, Hongkun Chen, T. Ding
The imbalance between the power supply capacity of distribution networks and the demand for load growth has become increasingly prominent. Moreover, the uneven load distribution and the unreasonable grid structure have caused serious voltage issues at the end of lines. In view of these problems, this paper proposes a multi-objective optimization planning method for distribution network topology. A total supply capability (TSC) model based on the power flow calculation is first constructed. Then, with the maximum TSC of distribution networks and the minimum voltage deviation as the objective function, a multi-objective optimization planning model is established. Subsequently, the NSGA-II algorithm is introduced to solve the model. Finally, the effectiveness of the proposed method is verified through the analysis of the IEEE-33 node power distribution system. The result shows that the proposed method can not only effectively improve the TSC of distribution networks, but also improve the voltage quality and strengthen the reliability of distribution networks.
配电网供电能力与负荷增长需求之间的不平衡问题日益突出。此外,负荷分布不均和电网结构不合理也造成了严重的线路末端电压问题。针对这些问题,本文提出了一种配电网拓扑结构的多目标优化规划方法。首先建立了基于潮流计算的总供电能力模型。然后,以配电网TSC最大和电压偏差最小为目标函数,建立了多目标优化规划模型。随后,引入NSGA-II算法对模型进行求解。最后,通过对IEEE-33节点配电系统的分析,验证了所提方法的有效性。结果表明,该方法不仅能有效提高配电网的TSC,还能改善配电网的电压质量,增强配电网的可靠性。
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引用次数: 2
Optimal Scheduling of Micro-Grid Multi-Energy System Considering Two-Dimensions Price-Based Demand Response 考虑二维价格需求响应的微网多能系统优化调度
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9437107
Hongyu Zhu, Hui Hwang, Dongdong Zhang, W. Dai, Thomas Wu
The demand response realizes the flexible energy utilization on the user side and promotes the energy utilization efficiency in the multi-energy micro-grid system. This paper establishes a two-dimensions price-based demand response model with both vertical load transfer and horizontal energy conversion. Considering a variety of renewable energy resources and energy storage, this paper studies the optimal scheduling of multi-energy micro-grid system with the feedback of residual power sold to the external grid, so as to maximize the revenue of a multi-energy micro-grid system operators. A case study shows that the two-dimensions price-based demand response can not only effectively reduce the energy consumption cost of users, but also improve the benefits of multi-energy micro-grid system.
需求响应实现了用户侧的灵活能源利用,提高了多能微网系统的能源利用效率。本文建立了考虑垂直负荷转移和水平能量转换的基于价格的二维需求响应模型。考虑多种可再生能源和储能,研究了多能微网系统在剩余售电反馈下的最优调度问题,以实现多能微网系统运营商收益最大化。实例研究表明,基于价格的二维需求响应不仅可以有效降低用户的能耗成本,而且可以提高多能微网系统的效益。
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引用次数: 4
A Study on the Optimal Scheduling and Evaluation of Urban Hydropower Stations Based on Power Generation, Ecology and Shipping 基于发电、生态和航运的城市水电站优化调度与评价研究
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9436887
Xiaojuan Li, Mutao Huang, Jinmeng Wang
With the development of hydropower stations towards multi-objective development, such as water supply, flood control, power generation and navigation, rational allocation of water resources has become a major problem. Based on liuzhou Honghua Hydropower station, an optimal scheduling model with multi-constraint, multi-objective, and multi-variable hydropower stations is proposed supported by the objective function based on the maximum generating capacity, navigation capacity and the least breakdown power. The Pareto optimal solution is employed to solve the multi-objective problem of optimal scheduling of hydropower stations. Consequently, a comprehensive evaluation model for optimal scheduling of hydropower stations was established according to the TOPISIS and gray correlation degree analysis. By selecting the scheduling solutions of hydropower stations, the result could be more accurate and closer to real conditions, which could provide guidance for project decision-makers.
随着水电站向着供水、防洪、发电、通航等多目标发展,水资源的合理配置已成为一个重大问题。以柳州红花水电站为例,提出了以最大发电量、导航能力和最小故障功率为目标函数支持的多约束、多目标、多变量水电站优化调度模型。采用帕累托最优解求解水电站优化调度的多目标问题。基于TOPISIS和灰色关联度分析,建立了水电站最优调度的综合评价模型。通过对水电站调度方案的选择,可以使结果更准确、更接近实际情况,为项目决策者提供指导。
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引用次数: 0
Optimum Structural Design of Magnetic Field Concentrator on Leakage Current Sensor 漏电流传感器磁场集中器结构优化设计
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9436980
Liu Fuchao, Luo Ruixi, L. Kun, Liu Sujie
Leakage current of high voltage equipment is an important parameter to reflect its insulation state. In the practical application of on-line monitoring system for high voltage equipment, it is necessary to install leakage current sensors to measure the leakage current. Because of the leakage current is a weak signal, we usually need to design a magnetic field concentrator to amplify the measured signal which used on leakage current sensor based on Hall effect or magneto-resistance effect, in order to improve the sensitivity. This paper designed different kinds of magnetic field concentrator by focusing on two typical application scenarios: hollow steel column and grounding bar. The optimal structural design is put forward by simulation analysis. Concentrating efficiency of the magnetic field concentrator is also evaluated by developing and testing of a prototype.
高压设备的漏电电流是反映其绝缘状态的重要参数。在高压设备在线监测系统的实际应用中,需要安装泄漏电流传感器来测量泄漏电流。由于漏电流是一种微弱的信号,通常需要设计磁场集中器来放大基于霍尔效应或磁阻效应的漏电流传感器上的测量信号,以提高灵敏度。本文针对空心钢柱和接地排两种典型应用场景,设计了不同类型的磁场集中器。通过仿真分析,提出了优化结构设计方案。通过样机的研制和试验,对磁场浓缩器的浓缩效率进行了评价。
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引用次数: 1
Analysis of Peak Regulation Auxiliary Service Market Under the Deepening Stage of the Spot Market Construction 现货市场建设深化阶段下的调峰辅助服务市场分析
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9437016
Bin Han, Zhi Cai, Zhongyang Chen, Aiqiang Pan, Jing Liu
At present, China's peak regulation auxiliary service market has been put into operation. According to the actual situation, the peak regulation market rules formulated by various localities have improved the enthusiasm of power generation enterprises in peak regulation to a certain extent. With the development of spot market, the basis of peak regulation market has changed greatly. It is urgent to study the relationship between them. In this paper, the development of peak regulation market is deeply analyzed, and the main problems of peak load regulation are put forward. Then, the adaptability of peak regulation market and spot market is analyzed through scenario comparison, and the necessity of peak regulation market at present stage is explained. Furthermore, the paper studies and puts forward the coordination clearing mode and model between peak regulation market and spot market at the present stage, and verifies its feasibility through a practical example. Finally, some constructive suggestions are put forward for the development of peak regulation market.
目前,中国调峰辅助服务市场已投入运行。根据实际情况,各地制定的调峰市场规则,在一定程度上提高了发电企业的调峰积极性。随着现货市场的发展,调峰市场的基础发生了很大的变化。迫切需要研究它们之间的关系。本文对调峰市场的发展进行了深入分析,提出了调峰存在的主要问题。然后,通过情景对比分析调峰市场与现货市场的适应性,说明现阶段调峰市场的必要性。在此基础上,研究提出了现阶段调峰市场与现货市场的协调清算模式和模型,并通过实例验证了其可行性。最后,对我国调峰市场的发展提出了建设性的建议。
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引用次数: 0
A Study Framework of Industrial Electricity-Consumption Correlation Clustering: Taking Xiaoshan Textile Industry as Example 工业用电量关联聚类研究框架——以萧山纺织业为例
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9436886
Bingxu Hou, Lu Gao, W. Luo, Jiayi Shang, Zhen Li, Xuan Yang
Based on daily industrial electricity-consumption data, a study framework of industry clustering is proposed. It consists of qualitative analysis, clustering and forecast. In qualitative analysis, seasonal decomposition is performed and distinguishable characters, i.e., macroscopical trend, periodic/accidental disturbance-response and noise, are separated. It is found that industries in the same category show strong similarity in electricity consumption pattern, on the basis of which a clustering analysis is made with Pearson-correlation-coefficient-based distance and Minimum Spanning Tree method. Typical industries are clustered in the tree topology. Without a-priori economic hypothesis, conclusions beyond traditional cognition are drawn from discussions on Xiaoshan textile industry clustering results. With the clustered industries, Vector-Auto-Regression-based multivariate regression model is applied in electricity consumption forecast in order to take the causality between related industries into consideration. The forecast results coincide well with the observation data and are able to envelop most of the fluctuation.The aim of the study is not only to make a comprehensive forecast for short-to-medium term electricity-consumption, but also to build a cognitive method using ontology of data and logistics of clustering to release more socio-economic value from electricity-consumption data.
基于工业日用电量数据,提出了产业集群的研究框架。它包括定性分析、聚类和预测。在定性分析中,进行季节分解,分离出宏观趋势、周期性/偶然扰动响应和噪声等可区分的特征。在此基础上,采用基于pearson相关系数的距离和最小生成树方法进行聚类分析。典型行业在树状拓扑结构中聚集。在没有先验经济假设的情况下,对萧山纺织产业集聚结果进行了讨论,得出了超越传统认知的结论。在产业集聚的情况下,为了考虑相关产业之间的因果关系,将基于向量自回归的多元回归模型应用于用电量预测。预报结果与观测资料吻合较好,能够覆盖大部分的波动。本研究的目的不仅在于对中短期用电量进行综合预测,还在于利用数据本体和聚类物流构建认知方法,使用电量数据释放出更多的社会经济价值。
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引用次数: 5
Research on Inter-provincial Outbound Trading Model Considering the Reasonable Allocation of New Energy 考虑新能源合理配置的省际对外贸易模型研究
Pub Date : 2021-04-01 DOI: 10.1109/ACPEE51499.2021.9437114
Xiaoliang Dong, Yichuan Shi, Chenda Zhang, Kunyuan Xue, Chuncheng Gao
After the introduction of the absorption guarantee mechanism, it has been an irresistible trend for the demand side to absorb new energy in a wide range and in a high proportion. At present, the inter-provincial outbound trading, which is acted by the provincial power grid company, is the main transaction variety to solve the inverse distribution of energy resources in China and also an effective means and way to adjust the energy use structure in China. In the inter-provincial outbound trading, the formulation of the proportion of new energy is directly related to the volume of new energy, and it is the most important link in the trading. In order to improve the current situation of fixed proportion of new energy in inter-provincial outbound power transmission transactions, this paper improves the current trading mode in China by adding the process of collecting transaction willingness of power generation enterprises in advance, and proposes an inter-provincial outbound trading model considering the reasonable allocation of new energy. On the basis of considering the willingness of the two provinces, according to the declaration data of power generation enterprises and aiming at maximizing the proportion of social welfare and outgoing new energy, a reasonable calculation model of the proportion of new energy is established, and the advantages of the optimized proportion of new energy compared with the fixed proportion of new energy are explained through an example.
吸收保障机制出台后,需求侧大范围、高比例地吸收新能源已是大势所趋。目前,以省级电网公司为主体的省际对外交易是解决中国能源资源逆分布的主要交易方式,也是调整中国能源利用结构的有效手段和途径。在省际对外贸易中,新能源占比的制定直接关系到新能源的交易量,是交易中最重要的环节。为改善新能源在省际外输交易中占固定比例的现状,本文对中国现行交易模式进行了改进,增加了发电企业交易意愿的预先采集流程,提出了考虑新能源合理配置的省际外输交易模型。在考虑两省意愿的基础上,根据发电企业申报数据,以社会福利和新能源输出比例最大化为目标,建立了合理的新能源比例计算模型,并通过实例说明优化后的新能源比例相对于固定比例的优势。
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引用次数: 0
期刊
2021 6th Asia Conference on Power and Electrical Engineering (ACPEE)
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