Query：
学者姓名：刘庆珍
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
Abstract ：
针对变压器油纸绝缘扩展德拜模型时域微分法存在的峰值覆盖现象,导致无法准确判断模型弛豫支路数,首先推导出去极化电流函数的n次微分形式,并通过两条微分子谱线研究微分法峰值覆盖因素;然后计算前一条微分谱线在后一条微分谱线峰值点的比例,作为微分子谱线一对微分子谱线二峰值点影响程度,同理计算谱线二对谱线一峰值点影响程度;接着研究弛豫贡献度与微分次数对微分谱线峰值覆盖的影响;最后通过仿真验证了弛豫贡献度越大,其子谱线峰值点越明显,相邻两个子谱线峰值点越容易被其覆盖,微分次数越高,各微分子谱线峰值点越明显.研究结果论证了峰值覆盖现象存在的原因,为后续有效降低峰值覆盖现象、准确可靠地判断变压器油纸绝缘扩展德拜弛豫支路数提供理论基础.
Keyword ：
去极化电流 去极化电流 变压器 变压器 峰值点覆盖 峰值点覆盖 扩展德拜模型 扩展德拜模型 时域微分法 时域微分法 油纸绝缘 油纸绝缘
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 汪洋洋 , 宋福根 , 刘庆珍 . 油纸绝缘扩展德拜等效模型时域微分法峰值特性分析 [J]. | 电气应用 , 2025 , 44 (1) : 128-134 . |
| MLA | 汪洋洋 等. "油纸绝缘扩展德拜等效模型时域微分法峰值特性分析" . | 电气应用 44 . 1 (2025) : 128-134 . |
| APA | 汪洋洋 , 宋福根 , 刘庆珍 . 油纸绝缘扩展德拜等效模型时域微分法峰值特性分析 . | 电气应用 , 2025 , 44 (1) , 128-134 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
基于回复电压法求解变压器油纸绝缘扩展德拜模型等效电路参数,是典型的非线性多目标优化问题.为了提高扩展德拜模型参数辨识的效率和准确度,提出一种新颖的改进雪融优化(improved snow ablation optimizer,ISAO)算法,旨在有效解决扩展德拜模型参数辨识问题.ISAO算法融合了多种改进策略,运用Tent混沌映射和折射镜像学习机制提高搜索效率,引入莱维飞行策略和贪婪策略增强优化性能,并提出参数预设机制,进一步简化辨识流程、提高求解效率.将ISAO算法应用于油纸绝缘扩展德拜等效电路参数的优化求解,并与几种常用的智能优化算法进行对比,结果表明该算法在扩展德拜模型参数辨识问题上具有显著优势.
Keyword ：
参数辨识 参数辨识 参数预设机制 参数预设机制 回复电压法 回复电压法 扩展德拜模型 扩展德拜模型 油纸绝缘 油纸绝缘 非线性多目标优化 非线性多目标优化
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 周宇含 , 刘庆珍 . 基于改进雪融优化算法的油纸绝缘扩展德拜模型参数辨识 [J]. | 广东电力 , 2024 , 37 (9) : 80-87 . |
| MLA | 周宇含 等. "基于改进雪融优化算法的油纸绝缘扩展德拜模型参数辨识" . | 广东电力 37 . 9 (2024) : 80-87 . |
| APA | 周宇含 , 刘庆珍 . 基于改进雪融优化算法的油纸绝缘扩展德拜模型参数辨识 . | 广东电力 , 2024 , 37 (9) , 80-87 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
针对粒子群优化算法收敛速度较慢、易陷入局部最优、收敛结果不够稳定等问题,本文从初始种群、边界处理、惯性权重三个方面对传统粒子群算法进行改进,提出多策略融合粒子群算法(MSF-PSO),并通过测试函数证明了MSF-PSO可大幅提高计算速度和计算效率.将MSF-PSO应用于变压器油纸绝缘介电响应的德拜等效电路参数辨识中,计算结果表明,与其他粒子群优化算法相比,该算法获得的回复电压极化谱能更好地与现场测试获得的回复电压极化谱相吻合,进一步验证了本文所提改进算法的准确性,可为诊断变压器油纸绝缘设备老化情况提供参考.
Keyword ：
参数辨识 参数辨识 回复电压 回复电压 回复电压极化谱 回复电压极化谱 油纸绝缘 油纸绝缘 粒子群优化 粒子群优化
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 徐晨展 , 刘庆珍 . 基于多策略融合粒子群算法的油纸绝缘参数辨识 [J]. | 电气技术 , 2024 , 25 (9) : 14-21 . |
| MLA | 徐晨展 等. "基于多策略融合粒子群算法的油纸绝缘参数辨识" . | 电气技术 25 . 9 (2024) : 14-21 . |
| APA | 徐晨展 , 刘庆珍 . 基于多策略融合粒子群算法的油纸绝缘参数辨识 . | 电气技术 , 2024 , 25 (9) , 14-21 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
There are problems in that the Raman analysis of transformer oil is usually interfered with by noise and fluorescent background, and it is difficult to identify the position of the spectral peak. Thus this paper proposes an improved data processing and spectral peak recognition algorithm for the Raman analysis of transformer oil aging evaluation. An adaptive Savitzky-Golay filtering method is proposed, and adaptive window-size Raman spectral data is introduced for denoising. An improved polynomial fitting algorithm is used to remove the fluorescence background processing of the de-noised data to reduce its influence on the fitting results. Each data point is weighted according to the distance between the data point and the expected Raman signal, so as to achieve more accurate de-fluorescence background processing. The aging degree of transformer oil is identified by spectral peak recognition technology, and the spectral peak is identified by the Gaussian window discrimination method with two scales, and the authenticity of the suspected Raman spectral peak is judged by the local weighted signal-to-noise ratio (LW_SNR). Finally, the effectiveness of the proposed algorithm in transformer oil aging evaluation is proved by experiment. © 2024 Power System Protection and Control Press. All rights reserved.
Keyword ：
Data handling Data handling Fluorescence Fluorescence Oil filled transformers Oil filled transformers Raman spectroscopy Raman spectroscopy Signal denoising Signal denoising Signal to noise ratio Signal to noise ratio Transformer protection Transformer protection
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Qingzhen , Zhang, Yi , Yan, Renwu . Transformer oil insulation aging based on Raman spectral data processing and peak identification [J]. | Power System Protection and Control , 2024 , 52 (8) : 158-166 . |
| MLA | Liu, Qingzhen 等. "Transformer oil insulation aging based on Raman spectral data processing and peak identification" . | Power System Protection and Control 52 . 8 (2024) : 158-166 . |
| APA | Liu, Qingzhen , Zhang, Yi , Yan, Renwu . Transformer oil insulation aging based on Raman spectral data processing and peak identification . | Power System Protection and Control , 2024 , 52 (8) , 158-166 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
针对变压器油的拉曼光谱分析通常受到噪声和荧光背景等的干扰以及谱峰位置难以识别的问题，提出了一种改进的数据处理和谱峰识别算法，用于变压器油老化评估时的拉曼光谱分析。提出一种自适应Savitzky-Golay滤波法，引入自适应窗口大小拉曼光谱数据进行去噪处理。采用改进的多项式拟合算法对去噪后的数据进行去除荧光背景处理，减小荧光背景对拟合结果的影响。通过数据点与期望的拉曼信号的接近程度为每个数据点赋予权重，以实现更准确的去荧光背景处理。利用谱峰识别技术判别变压器油的老化程度，采用大小两种尺度高斯窗口判别法来识别谱峰，并结合局部加权信噪比(local weighted signal-to-noise ratio, LW＿SNR)来判断疑似拉曼谱峰的真实性。最后通过实验验证了所提算法在变压器油老化评估中的有效性。
Keyword ：
去噪 去噪 变压器油老化评估 变压器油老化评估 局部窗口加权信噪比 局部窗口加权信噪比 荧光背景 荧光背景 谱峰识别 谱峰识别
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘庆珍 , 张溢 , 鄢仁武 . 基于拉曼光谱数据处理和谱峰识别的变压器油绝缘老化研究 [J]. | 电力系统保护与控制 , 2024 , 52 (08) : 158-166 . |
| MLA | 刘庆珍 等. "基于拉曼光谱数据处理和谱峰识别的变压器油绝缘老化研究" . | 电力系统保护与控制 52 . 08 (2024) : 158-166 . |
| APA | 刘庆珍 , 张溢 , 鄢仁武 . 基于拉曼光谱数据处理和谱峰识别的变压器油绝缘老化研究 . | 电力系统保护与控制 , 2024 , 52 (08) , 158-166 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In order to effectively utilize the dielectric response characteristics of transformers to diagnose the insulation state, this paper proposes a two-level hybrid optimization method for analyzing time-domain dielectric response characteristics. The optimization algorithm is based on the combined statistical indicators (CSI) and random forest (RF) theory. The initial feature space set is formed with 23 time-domain characteristics. In the first-level stage, statistical indices correlation, distance, and information indicators are integrated to assess the synthesis score of the characteristics, while highly redundant and low-class discrimination characteristics are eliminated from the initial space set. In the second-level stage, the Random Forest based outside bagging data theory is introduced to evaluate the least important characteristics, and the characteristics with low importance indices are excluded to obtain the final optimal feature space set. The proposed method is carried out on 82 sets of data from actual dielectric response tests on oil-paper insulation transformers. Finally, the final optimal feature space set, along with several other data sets, is tested via different diagnosis methods. The results show that the optimal feature space set obtained via the proposed method outperforms other feature space sets in terms of better adaptability and diagnosis accuracy.
Keyword ：
Aging Aging Correlation Correlation Decision trees Decision trees Feature space optimization Feature space optimization integrated statistical indicators integrated statistical indicators Oil insulation Oil insulation oil-paper insulation state oil-paper insulation state Optimization methods Optimization methods Power transformer insulation Power transformer insulation random forest random forest Time-domain analysis Time-domain analysis time domain characteristic time domain characteristic two-level algorithm two-level algorithm
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Qingzhen , Cai, Chao , Wu, Lei et al. Characteristic Optimization Based on Combined Statistical Indicators and Random Forest Theory [J]. | CSEE JOURNAL OF POWER AND ENERGY SYSTEMS , 2024 , 10 (6) : 2657-2666 . |
| MLA | Liu, Qingzhen et al. "Characteristic Optimization Based on Combined Statistical Indicators and Random Forest Theory" . | CSEE JOURNAL OF POWER AND ENERGY SYSTEMS 10 . 6 (2024) : 2657-2666 . |
| APA | Liu, Qingzhen , Cai, Chao , Wu, Lei , Yan, Renwu . Characteristic Optimization Based on Combined Statistical Indicators and Random Forest Theory . | CSEE JOURNAL OF POWER AND ENERGY SYSTEMS , 2024 , 10 (6) , 2657-2666 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为了充分挖掘对变压器油纸绝缘综合诊断结果有利的老化特征量，提出一种基于关联信息熵和轻量级梯度提升机（LightGBM）的特征量优选策略。首先，基于不同老化状态的变压器介电响应实测数据，提取不同类别的时域特征量形成初始高维特征空间；其次，引入关联信息熵度量特征子集的相关性及冗余性，再利用轻量级梯度提升机评估特征的重要度，进而得到最优特征空间；最后，对比分析最优特征空间与不同对照组的诊断性能，有效验证了基于所提优选策略确定的最优特征空间的优越性。
Keyword ：
关联信息熵 关联信息熵 梯度提升算法 梯度提升算法 油纸绝缘老化 油纸绝缘老化 特征选择 特征选择 综合诊断 综合诊断
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 赖汶鸿 , 刘庆珍 , 鄢仁武 . 基于关联信息熵和轻量级梯度提升机的油纸绝缘特征优选策略 [J]. | 电气技术 , 2024 , 25 (01) : 34-41,47 . |
| MLA | 赖汶鸿 et al. "基于关联信息熵和轻量级梯度提升机的油纸绝缘特征优选策略" . | 电气技术 25 . 01 (2024) : 34-41,47 . |
| APA | 赖汶鸿 , 刘庆珍 , 鄢仁武 . 基于关联信息熵和轻量级梯度提升机的油纸绝缘特征优选策略 . | 电气技术 , 2024 , 25 (01) , 34-41,47 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
A new weak link determination indicator of power system is proposed and a multi-objective function reactive power optimization method oriented to system weak link analysis is proposed. The characteristics and advantages of both voltage and power aspects of the weakness indicator are fused. A new weak link compounding margin determination indicator is defined，which comprehensively describes the distance between the load normal operating point and the voltage collapse point. This indicator can be used as the determination criterion to identify the voltage weak link point set of system，which constitutes the set of nodes to be compensated for reactive power optimization. A multi-objective reactive power optimization model is established，and an improved adaptive genetic algorithm is used to replace the traditional roulette wheel method with deterministic selection principle in the algorithm selection process，and then the multi-objective reactive power optimization model is solved. Taking the IEEE 30-bus system and the New England IEEE 39-bus system as simulative testing cases，by comparing several system operation indicators and the calculative results of traditional method，the efficiency and superiority of reactive power optimization strategy according to the new weak link determination indicator is verified，as well as the high efficiency of the improved adaptive genetic algorithm in the multi-objective reactive power optimization calculation is verified. © 2024 Electric Power Automation Equipment Press. All rights reserved.
Keyword ：
Efficiency Efficiency Electric loads Electric loads Genetic algorithms Genetic algorithms Multiobjective optimization Multiobjective optimization Reactive power Reactive power Well testing Well testing
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Qingzhen , Huang, Junying , Wang, Shaofang . Compounding voltage weakness indicator and reactive power optimization strategy oriented to it [J]. | Electric Power Automation Equipment , 2024 , 44 (1) : 147-152 and 159 . |
| MLA | Liu, Qingzhen et al. "Compounding voltage weakness indicator and reactive power optimization strategy oriented to it" . | Electric Power Automation Equipment 44 . 1 (2024) : 147-152 and 159 . |
| APA | Liu, Qingzhen , Huang, Junying , Wang, Shaofang . Compounding voltage weakness indicator and reactive power optimization strategy oriented to it . | Electric Power Automation Equipment , 2024 , 44 (1) , 147-152 and 159 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
提出了一种新的电力系统薄弱环节确定指标,并提出以系统薄弱环节分析为导向的多目标函数无功优化方法.首先,融合薄弱性指标电压和功率两方面的特点和优势,定义了新的薄弱环节复合裕度判定指标,综合描述负荷正常工作点与电压崩溃点的距离;以该指标为判定标准识别出系统的电压薄弱环节点集,由此点集构成无功优化的待补偿节点集.然后,建立多目标无功优化模型,采用改进自适应遗传算法,在算法选择环节采用确定式选择原则替换传统轮盘赌法,进而完成多目标无功优化模型求解.最后,以IEEE 30节点系统和新英格兰IEEE 39节点系统为仿真试验案例,通过优化后多项系统运行指标与传统方法计算结果的对比,验证了以新的薄弱环节判定指标为无功优化策略的有效性和优越性,同时也证明了改进后的自适应遗传算法在多目标无功优化计算中的高效性.
Keyword ：
复合裕度指标 复合裕度指标 多目标无功优化 多目标无功优化 确定式选择原则 确定式选择原则 自适应遗传算法 自适应遗传算法 薄弱环节 薄弱环节
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘庆珍 , 黄君莹 , 王少芳 . 复合电压薄弱性指标及以其为导向的无功优化策略 [J]. | 电力自动化设备 , 2024 , 44 (1) : 147-152,159 . |
| MLA | 刘庆珍 et al. "复合电压薄弱性指标及以其为导向的无功优化策略" . | 电力自动化设备 44 . 1 (2024) : 147-152,159 . |
| APA | 刘庆珍 , 黄君莹 , 王少芳 . 复合电压薄弱性指标及以其为导向的无功优化策略 . | 电力自动化设备 , 2024 , 44 (1) , 147-152,159 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Aiming at the problem of inaccurate aging assessment of single characteristic quantity in the oil-paper insulation dielectric response method，the grade cloud model is proposed to assess the aging state of oil-paper insulation with multiple characteristic quantities. First，the matrix pencil method is used to identify the parameters of the equivalent circuit，and two new time-domain characteristic quantities that can characterize the aging state of the geometric branch and the polarization branch are proposed respectively. Then，the comprehensive weight calculation is performed in combination with the subjective and objective weighting methods. Finally，the grade cloud model is used to construct the assessment model of the aging state of the equipment. According to the theory and the actually measured data of the cloud model，the digital characteristics of each standard grade cloud model are obtained. The correlation calculation of the various indexes of the equipment to be assessed and the standard grade cloud model is performed to obtain the insulation aging grade of the equipment. It is proved by a number of examples that the assessment results obtained by this method can correctly reflect the real condition of the equipment and have high application feasibility. © 2023 Xi'an High Voltage Apparatus Research Institute. All rights reserved.
Keyword ：
aging state assessment aging state assessment dielectric response method dielectric response method grade cloud model grade cloud model matrix pencil method matrix pencil method oil - paper insulation oil - paper insulation
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Q. , Chen, J. . Assessment of Ageing State of Oil-paper Insulation Based on Grade Cloud Model; [基于等级云模型的油纸绝缘老化状态评估] [J]. | High Voltage Apparatus , 2023 , 59 (1) : 176-184 . |
| MLA | Liu, Q. et al. "Assessment of Ageing State of Oil-paper Insulation Based on Grade Cloud Model; [基于等级云模型的油纸绝缘老化状态评估]" . | High Voltage Apparatus 59 . 1 (2023) : 176-184 . |
| APA | Liu, Q. , Chen, J. . Assessment of Ageing State of Oil-paper Insulation Based on Grade Cloud Model; [基于等级云模型的油纸绝缘老化状态评估] . | High Voltage Apparatus , 2023 , 59 (1) , 176-184 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
