变电站二次设备舱是电力系统中的关键组成部分,负责安装和管理各类控制、保护、监测及通信设备。这就意味着二次设备舱需要有很强的适应性,以满足当地的环境要求。由于台风影响,吉林永吉变电站二次设备舱存在防水问题。因此,对其进行了...变电站二次设备舱是电力系统中的关键组成部分,负责安装和管理各类控制、保护、监测及通信设备。这就意味着二次设备舱需要有很强的适应性,以满足当地的环境要求。由于台风影响,吉林永吉变电站二次设备舱存在防水问题。因此,对其进行了改进。在原有结构的基础上,在内外层板中加入聚氨酯保温板,提高预制舱的吸水性。并对改进后的二次设备舱进行了环境适应性研究。主要对二次设备舱在极限温度下的工况进行了分析,使其具有实用性。The secondary equipment compartment of a substation is a key component of the power system, responsible for installing and managing various control, protection, monitoring, and communication equipment. This means that the secondary equipment compartment needs to have strong adaptability to meet local environmental requirements. Due to the impact of the typhoon, there are waterproofing issues in the secondary equipment compartment of Jilin Yongji Substation. Therefore, it has been improved. On the basis of the original structure, polyurethane insulation boards are added to the inner and outer layers to improve the water absorption of the prefabricated cabin. And environmental adaptability research was conducted on the improved secondary equipment cabin. The analysis mainly focuses on the working conditions of the secondary equipment compartment under extreme temperature, making it practical.展开更多
当前电力行业中高压断路器的在线感知数据积累严重不足,处理难度较大,并且故障试验成本高昂且危险性高,现场故障时设置的故障单一,获得的数据具有局限性,这些问题导致高压断路器的机器学习算法的置信度低,难以实际应用到设备的在线监测...当前电力行业中高压断路器的在线感知数据积累严重不足,处理难度较大,并且故障试验成本高昂且危险性高,现场故障时设置的故障单一,获得的数据具有局限性,这些问题导致高压断路器的机器学习算法的置信度低,难以实际应用到设备的在线监测中。本文通过Matlab搭建故障模拟平台,可根据需要调整断路器操动机构的各个参数,模拟断路器在不同运行状态下的各种机电故障,用软件提取断路器分合闸线圈电流信号和动铁芯直线行程位移信号的时域特征,并对混杂着各种故障状态下的合闸、分闸以及拒动过程训练数据进行处理研究,导出故障诊断模型训练规范的数据文件,有效地解决了现有数据量不足的问题,为构建断路器人工智能故障诊断模型提供数据基础。The accumulation of online perception data for high-voltage circuit breakers in the current power industry is seriously insufficient, and the processing difficulty is high. In addition, the cost of fault testing is high and the danger is high. The single fault set during on-site faults has limitations in the data obtained. These problems result in low confidence of machine learning algorithms for high-voltage circuit breakers, making it difficult to apply them in practical online monitoring of equipment. This paper builds a fault simulation platform through Matlab, adjusts the parameters of circuit breaker operating mechanism according to needs, simulates various electromechanical faults of circuit breaker under different operating states, and uses software to extract the time domain characteristics of circuit breaker switching coil current signal and moving core linear stroke displacement signal. And the training data of the closing and opening processes under various fault states, as well as the refusal to operate, are processed and studied, and the data file for training the fault diagnosis model is extracted, effectively solving the problem of insufficient data, providing a data basis for building an artificial intelligence fault diagnosis model for circuit breakers.展开更多
随着高速公路的大力发展,特别是智慧公路的快速发展,高速公路基础设施建设逐步向数字化、信息化、智慧化方向转变。然而,数字化电力电子设备的广泛使用也带来了日益严重的电能质量问题,影响高速公路系统的正常运行和安全,增加了运营成...随着高速公路的大力发展,特别是智慧公路的快速发展,高速公路基础设施建设逐步向数字化、信息化、智慧化方向转变。然而,数字化电力电子设备的广泛使用也带来了日益严重的电能质量问题,影响高速公路系统的正常运行和安全,增加了运营成本和维护难度。本文针对高速公路供电电能质量存在的问题,首先对现有电能质量评估指标的系统进行了归纳和总结,在此基础上,提出了一种基于时域卷积网络(TCN)和长短期记忆网络(LSTM)相结合的电能质量预测模型方法,并通过算例验证了该方法在提高预测准确性方面的优势。With the rapid development of highways, particularly smart highways, highway infrastructure construction is gradually transitioning towards digitalization, informatization, and intelligence. However, the widespread use of digital power electronic devices has led to increasingly severe power quality issues, which affect the normal operation and safety of highway systems, while also increasing operational costs and maintenance complexity. In response to the power quality problems in highway power supply systems, this paper first summarizes and organizes the existing power quality evaluation indices systematically. On this basis, a power quality prediction model is proposed, combining Temporal Convolutional Networks (TCN) and Long Short-Term Memory (LSTM) networks. The advantages of this method in improving prediction accuracy are demonstrated through case studies.展开更多
交通运输部“十四五”规划明确提出了安全、便捷、绿色、经济的交通体系发展规划,高速公路作为现代综合交通运输体系中的重要组成部分,对国民经济的发展作用不容忽视。随着高速公路里程以及电动交通运输工具的不断增加,传统高速公路供...交通运输部“十四五”规划明确提出了安全、便捷、绿色、经济的交通体系发展规划,高速公路作为现代综合交通运输体系中的重要组成部分,对国民经济的发展作用不容忽视。随着高速公路里程以及电动交通运输工具的不断增加,传统高速公路供电方式已经难以满足现代高速公路的快速发展的需求。本文基于高速公路的传统供电方式和负荷特点,提出了一种新型的结合新能源发电的组合式供电技术方案,并进行了优化配置,为高速公路供电系统的升级换代提供了一种新的途径。The “14th Five-Year Plan” of the Ministry of Transport clearly puts forward the development plan of a safe, convenient, green and economical transportation system, and the role of expressways as an important part of the modern comprehensive transportation system cannot be ignored in the development of the national economy. With the increasing mileage of expressways and electric vehicles, it is difficult for traditional expressway power supply methods to meet the needs of the rapid development of modern expressways. Based on the traditional power supply mode and load characteristics of expressways, this paper proposes a new type of combined power supply technology scheme combined with new energy power generation, and optimizes the configuration, which provides a new way for the upgrading of expressway power supply system.展开更多
文摘变电站二次设备舱是电力系统中的关键组成部分,负责安装和管理各类控制、保护、监测及通信设备。这就意味着二次设备舱需要有很强的适应性,以满足当地的环境要求。由于台风影响,吉林永吉变电站二次设备舱存在防水问题。因此,对其进行了改进。在原有结构的基础上,在内外层板中加入聚氨酯保温板,提高预制舱的吸水性。并对改进后的二次设备舱进行了环境适应性研究。主要对二次设备舱在极限温度下的工况进行了分析,使其具有实用性。The secondary equipment compartment of a substation is a key component of the power system, responsible for installing and managing various control, protection, monitoring, and communication equipment. This means that the secondary equipment compartment needs to have strong adaptability to meet local environmental requirements. Due to the impact of the typhoon, there are waterproofing issues in the secondary equipment compartment of Jilin Yongji Substation. Therefore, it has been improved. On the basis of the original structure, polyurethane insulation boards are added to the inner and outer layers to improve the water absorption of the prefabricated cabin. And environmental adaptability research was conducted on the improved secondary equipment cabin. The analysis mainly focuses on the working conditions of the secondary equipment compartment under extreme temperature, making it practical.
文摘当前电力行业中高压断路器的在线感知数据积累严重不足,处理难度较大,并且故障试验成本高昂且危险性高,现场故障时设置的故障单一,获得的数据具有局限性,这些问题导致高压断路器的机器学习算法的置信度低,难以实际应用到设备的在线监测中。本文通过Matlab搭建故障模拟平台,可根据需要调整断路器操动机构的各个参数,模拟断路器在不同运行状态下的各种机电故障,用软件提取断路器分合闸线圈电流信号和动铁芯直线行程位移信号的时域特征,并对混杂着各种故障状态下的合闸、分闸以及拒动过程训练数据进行处理研究,导出故障诊断模型训练规范的数据文件,有效地解决了现有数据量不足的问题,为构建断路器人工智能故障诊断模型提供数据基础。The accumulation of online perception data for high-voltage circuit breakers in the current power industry is seriously insufficient, and the processing difficulty is high. In addition, the cost of fault testing is high and the danger is high. The single fault set during on-site faults has limitations in the data obtained. These problems result in low confidence of machine learning algorithms for high-voltage circuit breakers, making it difficult to apply them in practical online monitoring of equipment. This paper builds a fault simulation platform through Matlab, adjusts the parameters of circuit breaker operating mechanism according to needs, simulates various electromechanical faults of circuit breaker under different operating states, and uses software to extract the time domain characteristics of circuit breaker switching coil current signal and moving core linear stroke displacement signal. And the training data of the closing and opening processes under various fault states, as well as the refusal to operate, are processed and studied, and the data file for training the fault diagnosis model is extracted, effectively solving the problem of insufficient data, providing a data basis for building an artificial intelligence fault diagnosis model for circuit breakers.
文摘随着高速公路的大力发展,特别是智慧公路的快速发展,高速公路基础设施建设逐步向数字化、信息化、智慧化方向转变。然而,数字化电力电子设备的广泛使用也带来了日益严重的电能质量问题,影响高速公路系统的正常运行和安全,增加了运营成本和维护难度。本文针对高速公路供电电能质量存在的问题,首先对现有电能质量评估指标的系统进行了归纳和总结,在此基础上,提出了一种基于时域卷积网络(TCN)和长短期记忆网络(LSTM)相结合的电能质量预测模型方法,并通过算例验证了该方法在提高预测准确性方面的优势。With the rapid development of highways, particularly smart highways, highway infrastructure construction is gradually transitioning towards digitalization, informatization, and intelligence. However, the widespread use of digital power electronic devices has led to increasingly severe power quality issues, which affect the normal operation and safety of highway systems, while also increasing operational costs and maintenance complexity. In response to the power quality problems in highway power supply systems, this paper first summarizes and organizes the existing power quality evaluation indices systematically. On this basis, a power quality prediction model is proposed, combining Temporal Convolutional Networks (TCN) and Long Short-Term Memory (LSTM) networks. The advantages of this method in improving prediction accuracy are demonstrated through case studies.
文摘交通运输部“十四五”规划明确提出了安全、便捷、绿色、经济的交通体系发展规划,高速公路作为现代综合交通运输体系中的重要组成部分,对国民经济的发展作用不容忽视。随着高速公路里程以及电动交通运输工具的不断增加,传统高速公路供电方式已经难以满足现代高速公路的快速发展的需求。本文基于高速公路的传统供电方式和负荷特点,提出了一种新型的结合新能源发电的组合式供电技术方案,并进行了优化配置,为高速公路供电系统的升级换代提供了一种新的途径。The “14th Five-Year Plan” of the Ministry of Transport clearly puts forward the development plan of a safe, convenient, green and economical transportation system, and the role of expressways as an important part of the modern comprehensive transportation system cannot be ignored in the development of the national economy. With the increasing mileage of expressways and electric vehicles, it is difficult for traditional expressway power supply methods to meet the needs of the rapid development of modern expressways. Based on the traditional power supply mode and load characteristics of expressways, this paper proposes a new type of combined power supply technology scheme combined with new energy power generation, and optimizes the configuration, which provides a new way for the upgrading of expressway power supply system.
