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2022 12th International Conference on Power and Energy Systems (ICPES)最新文献

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Economic Assessment of Energy Storage System Frequency Regulation in Thermal Generation Station 热电站储能系统调频的经济性评价
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10072912
Tianyu You, Huaye Huang, Ziming He, Sixian Yu, Haiyun Zhu, Weike Mo
Frequency control of power grids has become a relevant research topic due to the massive integration of renewable generation in power systems. Frequency control of traditional thermal generating units with relatively slow ramp rate cannot meet the frequency regulation requirements of power grid. Thus, the inclusion of energy storage system (ESS) at the thermal generation frequency control output can be used to improve the speed of load following and increase the profiles of ancillary service. In this paper, the economic assessment of energy storage system investments in thermal generation station is studied. A methodology has been presented here for the financial calculations of the ESS providing frequency regulation. A numerical case study based on frequency profiles of Yunnan power grid is simulated.
由于可再生能源发电在电力系统中的大规模集成,电网的频率控制已成为一个相关的研究课题。传统火电机组斜坡速率较慢,其频率控制不能满足电网的频率调节要求。因此,在热发电变频控制输出中加入储能系统(ESS)可以提高负荷跟随速度,增加辅助服务的轮廓。本文对热电厂储能系统投资的经济评价进行了研究。这里提出了一种方法,用于提供频率调节的ESS的财务计算。以云南电网的频率分布为例进行了数值模拟。
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引用次数: 0
A HVRT Control Strategy for DFIG Considering Dynamic Changes of Stator Flux and Dynamic Reactive Power Compensation 考虑定子磁链动态变化和动态无功补偿的DFIG HVRT控制策略
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10072439
Jing Chen, Jiandong Duan, Zhenghao Qi, Tong Gao, Yang Zhang
In recent years, the proportion of wind power generation in the grid has become higher and higher. Doubly-fed induction generator (DFIG) has become the mainstream wind turbine of distributed wind farms. For DFIG, large rotor currents and DC bus voltages will be generated when the grid voltage swells. Without protection, the converter may be damaged. It is essential to enhance the fault ride through capability of DFIG and reduce the impact on the stable operation of power grid. Therefore, a high voltage ride-through (HVRT) control strategy considering dynamic reactive power compensation is investigated to address this problem. Firstly, the original control strategy is described. Secondly, variation of the stator flux is considered during the grid fault. Thirdly, the grid-side converter (GSC) and the rotor-side converter (RSC) output reactive current to provide reactive power compensation. Finally, simulation results analyses are conducted by MATLAB/Simulink to evaluate the effectiveness of the proposed strategy.
近年来,风力发电在电网中的比重越来越高。双馈感应发电机(DFIG)已成为分布式风电场的主流风力发电机组。对于DFIG,当电网电压膨胀时,会产生较大的转子电流和直流母线电压。没有保护,转换器可能会损坏。提高DFIG的故障穿越能力,降低对电网稳定运行的影响是十分必要的。为此,研究了一种考虑动态无功补偿的高压穿越(HVRT)控制策略。首先,对原控制策略进行了描述。其次,考虑了电网故障时定子磁链的变化。再次,电网侧变流器(GSC)和转子侧变流器(RSC)输出无功电流,提供无功补偿。最后,利用MATLAB/Simulink对仿真结果进行了分析,以评价所提策略的有效性。
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引用次数: 0
Research on Reactive Power Planning for Power Grid with the Integration of UHV AC System 特高压交流一体化电网无功规划研究
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10072580
Tao Luo, Dezheng Zhang, Kui Wang, Zhenchuan Ma, Wenbo Xuan, Haozhong Cheng
URV AC transmission has the characteristics of large capacity, long distance, low loss and effective utilization of transmission corridor. It is an inevitable choice for the development of power grid in China. The operation of UHV AC system will have a considerable impact on the operation economy and stability of power grid, and also put forward new requirements for reactive power planning. In this paper, a two-stage reactive power planning model is proposed, in which the first-stage reactive power planning model aims at the minimization of system operation cost, active power loss and traversing reactive power under normal conditions. The second-stage model is to obtain the optimal reactive power planning scheme with the goal of minimizing the investment cost and the constraint of voltage stability margin under severe faults based on the first-stage planning scheme. Finally, the effectiveness of this model is verified through numerical results.
紫外线交流输电具有容量大、距离远、损耗低、有效利用输电走廊等特点。这是中国电网发展的必然选择。特高压交流系统的运行将对电网的运行经济性和稳定性产生相当大的影响,也对无功规划提出了新的要求。本文提出了一种两阶段无功规划模型,其中第一阶段无功规划模型以系统正常运行成本、有功损耗和穿越无功最小为目标;第二阶段模型是在第一阶段规划方案的基础上,以投资成本最小和严重故障下电压稳定裕度约束为目标,得到最优无功规划方案。最后,通过数值结果验证了该模型的有效性。
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引用次数: 0
Optimal Design of Household Electricity Consumption with Distributed Photovoltaic System Based on User Demand Response 基于用户需求响应的分布式光伏系统家庭用电优化设计
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10073120
Hanjun Deng, M. Yu, Suihan Zhang, Xing He, Yeqing Ma, Rui Ma, Rui Huang, Wenwei Zeng, Jiale Li
With the rapid development of economy and technology, the demand for electricity is growing day by day. In order to make the clean energy fully absorbed, different types of load are divided and modeled from the home users with photovoltaic power generation system. On this basis, a multi-objective optimization model based on power consumption and user comfort index was established, and then a household electricity optimization scheme based on user demand response was proposed. Finally, the effectiveness of the scheme was verified by simulation. While effectively saving electricity costs for users, we can better consume photovoltaic power generation and achieve peak cutting and valley filling.
随着经济和科技的快速发展,对电力的需求日益增长。为了使清洁能源被充分吸收,对光伏发电系统的家庭用户进行了不同类型的负荷划分和建模。在此基础上,建立了基于用电量和用户舒适度的多目标优化模型,提出了基于用户需求响应的家庭用电优化方案。最后,通过仿真验证了该方案的有效性。在为用户有效节约用电成本的同时,可以更好地利用光伏发电,实现削峰填谷。
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引用次数: 0
Fast Open-Switch Fault Diagnosis Based on Model Reference Adaptive Theory Applied to Inverter System 基于模型参考自适应理论的开路开关故障快速诊断在逆变系统中的应用
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10073066
Haoran Yin, Qing Chen, Xing Guo, Xinyuan Qiu, Xuxing Duan, Xiangji Zhao
This paper designs an algorithm for fast fault diagnosis for inverters, which utilizes the theoretical idea of model reference adaptive systems. Firstly, the inverter system model is established, and the estimation of rotor angle is obtained according to the model reference adaptive theory. Then, the estimation and the actual angle are used to obtain the residual error as a fault diagnosis variable, which is beneficial to improve the rapidity of the algorithm. In addition, in order to increase the accuracy of fault location, three-phase normalized currents are combined to complete location of specific fault switch tubes. The proposed algorithm does not need to add additional hardware facilities, and is real-time, fast, and simple. Results are shown to validate the proposed algorithm.
利用模型参考自适应系统的理论思想,设计了一种快速诊断逆变器故障的算法。首先,建立了逆变器系统模型,并根据模型参考自适应理论得到了转子角的估计。然后,利用估计值和实际角度得到残差作为故障诊断变量,有利于提高算法的快速性。此外,为了提高故障定位的精度,结合三相归一化电流完成具体故障开关管的定位。该算法不需要增加额外的硬件设施,具有实时性、快速性和简单性。实验结果验证了该算法的有效性。
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引用次数: 0
Broadband Measurement Scheme Based on Positive Sequence Instantaneous Power Algorithm 基于正序瞬时功率算法的宽带测量方案
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10073063
Lai Zihan, Dai Yuhan, Wen Fuguang
Modern power system shows the characteristics of high proportion of renewable energy and power electronic equipment (referred to as “double high”). Affected by the “double high” characteristics, in addition to power frequency signals, large amount of harmonic and interharmonic signals exist in the system. Resulting in the effect of broadband oscillation by the interaction between those signals of different frequencies and power frequency in the system, which may severely threaten the safe and stable operation of power system. At the current stage, the occurrence of broadband oscillation is mainly determined by measurement of the three-phase instantaneous power. However, the result might be confusing when three-phase imbalance occurs in the system. To solve this, the paper provides a broadband measurement method based on the algorithm of positive sequence instantaneous power, which significantly increases the accuracy of the measurement. This feasibility of the proposed method is verified by implementation results presented in the paper.
现代电力系统呈现出可再生能源和电力电子设备比例高(简称“双高”)的特点。受“双高”特性的影响,除工频信号外,系统中还存在大量的谐波和间谐波信号。系统中不同频率的信号与工频相互作用,产生宽带振荡效应,严重威胁电力系统的安全稳定运行。在现阶段,宽带振荡的发生主要是通过测量三相瞬时功率来确定的。然而,当系统中出现三相不平衡时,结果可能会令人困惑。针对这一问题,本文提出了一种基于正序瞬时功率算法的宽带测量方法,大大提高了测量精度。本文的实现结果验证了该方法的可行性。
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引用次数: 0
A Multi-dimensional Division Decision Model of Power Grid Management Based on Fuzzy Matching 基于模糊匹配的电网管理多维划分决策模型
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10072935
Chenying Feng, Xiaodong Xu, Jinsong Jia, ChenShu Shen, Zehua Chen
The power grid operation management process will produce a lot of text information data. However, there is no direct and precise correspondence between the key items in the textual records and the management sectors of the grid. Thus, the matching of the textual data and the management sectors of power grid operation and management is still mainly done by human resources. In order to improve the automation and efficiency of power grid operation and management, a matching decision model for power grid management sectors based on fuzzy matching is proposed. Firstly, a gravitational coefficient matrix is constructed to reflect the degree of association between the text keywords and each management sector of the power grid. Then, a scalar matrix is constructed to reflect the keyword information of the text data, and then the scalar matrix is multiplied with the mass matrix to obtain the fuzzy matching degree of the text data and each power grid management sector. Finally, the matching power grid management sector is selected according to the fuzzy matching degree matrix. In the case analysis part, 570 grid operation texts of a power company were taken as samples. The results show that the proposed fuzzy theory-based power grid management sector matching decision model has high matching accuracy and can achieve the management sector identification of power grid operation management text data.
电网运行管理过程中会产生大量的文本信息数据。但是,文本记录中的关键项目与网格的管理部门之间没有直接和精确的对应关系。因此,电网运行管理的文本数据与管理部门的匹配仍然主要由人力资源来完成。为了提高电网运行管理的自动化程度和效率,提出了一种基于模糊匹配的电网管理部门匹配决策模型。首先,构建引力系数矩阵来反映文本关键词与电网各管理部门之间的关联程度。然后,构造一个标量矩阵来反映文本数据的关键字信息,再将该标量矩阵与质量矩阵相乘,得到文本数据与各电网管理部门的模糊匹配程度。最后根据模糊匹配度矩阵选择匹配的电网管理扇区。案例分析部分以某电力公司570份电网运行文本为样本。结果表明,所提出的基于模糊理论的电网管理部门匹配决策模型具有较高的匹配精度,能够实现电网运行管理文本数据的管理部门识别。
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引用次数: 0
Research on New Energy Probability Prediction Technology Based on Ensemble Weather Forecast 基于集合天气预报的新型能源概率预测技术研究
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10072489
Han Wu, Yang Yuan, W. Yu, Chao Wu, Hao Huang, Annan Dong
In this paper, a ensemble weather forecasting method based on multi-initial value, multi-mode and multi-physical process, with multiple algorithm perturbations, and BMA+EMOS statistical modeling is proposed. Based on the ensemble weather forecasting method, a new energy probabilistic power prediction method combining taboo algorithm and BP neural network algorithm is proposed. Through the design example analysis, the proposed method can effectively reduce the prediction bias, reduce the upper and lower limit bandwidth of probability prediction by 25%, and overcome the power distribution fat tail and multimodal anomalies, making the power prediction results more stable and accurate.
提出了一种基于多初始值、多模式、多物理过程、多算法扰动和BMA+EMOS统计建模的集合天气预报方法。在集合天气预报方法的基础上,提出了一种结合禁忌算法和BP神经网络算法的能源概率功率预测新方法。通过设计算例分析,所提方法能有效降低预测偏差,将概率预测的上下限带宽降低25%,克服功率分布肥尾和多模态异常,使功率预测结果更加稳定准确。
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引用次数: 1
Research on the Automatic Control of Grid Peak Regulation Units to Improve the New Energy Consumption Level 电网调峰机组自动控制提高新能源消费水平的研究
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10072656
Kaihui Feng, Chenhui Song, B. Huang, Jing Hu, Hu Yan, Zihan Meng
While China's new energy maintains a rapid development momentum, grid consumption capacity is facing great challenges. In-depth peak regulation of grid peak regulation units represents a powerful measure for raising the new energy consumption level. This paper proposes an automatic control method for grid peak regulation units to improve the consumption level of new energy power generation. In this method, the relationship between new energy consumption and grid power regulation units is constructed. On this basis, considering the new energy consumption and related costs of various factors involved in grid power regulation unit control, the grid peak regulation unit control method and model are established and a multi-objective particle swarm optimization algorithm is adopted. The simulation results show that the proposed method can refine the control of the output of grid peak regulation units, effectively increase new energy consumption, and urge the grid toward a high security margin.
在中国新能源保持快速发展势头的同时,电网消纳能力面临巨大挑战。电网调峰单元深度调峰是提高新能源消费水平的有力措施。本文提出了一种电网调峰机组自动控制方法,以提高新能源发电的用电水平。该方法构建了新能源消耗与电网电力调节单元之间的关系。在此基础上,考虑电网调峰单元控制所涉及的各种因素的新能源消耗和相关成本,建立电网调峰单元控制方法和模型,采用多目标粒子群优化算法。仿真结果表明,该方法可以细化对电网调峰机组输出的控制,有效增加新增能耗,促使电网向高安全裕度方向发展。
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引用次数: 0
Distributed Renewable Energy Cluster Configuration Based on Improved Bare-Bones Multi-objective Particle Swarm Optimization 基于改进裸骨架多目标粒子群优化的分布式可再生能源集群配置
Pub Date : 2022-12-23 DOI: 10.1109/ICPES56491.2022.10073230
Jinrong Chen, Bo Li, Weinian Ouyang, Tianlun Wang, Tingwei Chen
A bi-level optimal allocation model of renewable energy cluster planning and operation is established in order to maximize the consumption of renewable energy based on the security and stability of the power system are ensured. The planning layer applied the particle swarm optimization algorithm, and the results were used as the input of the operation layer. The optimization model of the operation layer used the CVX toolbox, and the output results are used to evaluate the planning results. An improved bare-bones multi-objective particle swarm optimizer (IBB-MOPSO) algorithm is proposed to overcome the shortcomings of traditional particle swarm optimization (PSO), including the lack of diversity and easy to fall into local optimum. Building on the advantages of the bare-bones particle swarm algorithm (BB-PSO) with high adaptability and few control parameters, the global search and local exploitation capabilities are further enhanced by improvements. The effectiveness of the optimization configuration model and the solution algorithm is verified through the numerical simulations. The proposed method is universal, as the appropriate optimal solution can be selected according to specific demands for configuration in practical applications.
为了在保证电力系统安全稳定的基础上实现可再生能源的最大消耗,建立了可再生能源集群规划与运行的双层优化配置模型。规划层采用粒子群优化算法,求解结果作为操作层的输入。操作层优化模型采用CVX工具箱,输出结果用于评价规划结果。针对传统粒子群优化算法缺乏多样性和容易陷入局部最优的缺点,提出了一种改进的裸骨架多目标粒子群优化算法(IBB-MOPSO)。利用裸骨架粒子群算法(BB-PSO)自适应能力强、控制参数少的优点,进一步增强了全局搜索和局部开发能力。通过数值仿真验证了优化配置模型和求解算法的有效性。该方法具有通用性,可以根据实际应用中的具体配置需求选择合适的最优解。
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引用次数: 0
期刊
2022 12th International Conference on Power and Energy Systems (ICPES)
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