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学者姓名：郑宗华
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Abstract ：
The gradual increase in the penetration rate of distributed renewable energy has become a new situation. Under the new situation, industrial users with high energy consumption need to make reasonable decisions in electricity and carbon markets while ensuring power quality. This is a real problem that needs to be solved for high energy consumption industrial users. Therefore, we propose a decision model for industrial users participating in electricity and carbon markets considering differentiated power quality based on information gap decision theory (IGDT). Firstly, we analyze the impact of users' installation of distributed renewable energy on their power quality and carbon emissions. Considering the differentiated power quality services in the future electricity market, the carbon emissions when the user chooses different levels of power quality are quantified. Secondly, a decision-making model of industrial users participating in electricity market and carbon market considering differentiated power quality services is established. The objective function is the maximum profit of the user participating in the double market trading performance period. Thirdly, the IGDT theory is used to describe the uncertainty of distributed renewable energy generation, which reduces the decision-making risk of industrial users. Finally, we take a steel production enterprise as an example to analyze. The numerical results show that the proposed model can reduce carbon emissions and obtain maximum benefits for industrial users. The proposed model can realize the coordination and optimization of monthly electricity purchase and carbon quota trading volume. Moreover, it can help industrial users rationally arrange the access capacity of distributed renewable energy devices and select the improved power quality level.
Keyword ：
Carbon market Carbon market Distributed renewable energy Distributed renewable energy Electricity market Electricity market Industrial users Industrial users Power quality Power quality
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| GB/T 7714 | Zhang, Yi , Xiang, Mengru , Zheng, Zonghua . An IGDT-based decision model for industrial users participating in electricity and carbon markets considering differentiated power quality services [J]. | ENERGY , 2025 , 315 . |
| MLA | Zhang, Yi 等. "An IGDT-based decision model for industrial users participating in electricity and carbon markets considering differentiated power quality services" . | ENERGY 315 (2025) . |
| APA | Zhang, Yi , Xiang, Mengru , Zheng, Zonghua . An IGDT-based decision model for industrial users participating in electricity and carbon markets considering differentiated power quality services . | ENERGY , 2025 , 315 . |
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The pollution of the common connection point (CCP) in the power grid is the result of the interaction of multiple harmonic sources. In order to more accurately and fairly divide the harmonic responsibility and harmonic influence of each harmonic source at the CCP, a comprehensive evaluation method considering the user’s harmonic tolerance and grid loss is proposed. Through power flow calculation and correlation analysis, the influence degree of multi-harmonic sources on the common connection point is divided. Considering the degree of harmonic tolerance of general users on the user side and the network loss factors on the grid side, the multi-harmonic source access distribution network is comprehensively evaluated. Combined with the power flow calculation results and the harmonic compatibility level of the distribution network, a comprehensive evaluation index is formulated. This method can objectively evaluate the influence degree of the harmonic source on the distribution network, and has certain guiding significance for the location selection of the harmonic source access to the distribution network, the harmonic responsibility allocation of the multi-harmonic source access to the distribution network, and the subsequent harmonic control. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Keyword ：
Harmonic assessment Harmonic assessment Harmonic responsibility determination Harmonic responsibility determination Multi-harmonic source Multi-harmonic source
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| GB/T 7714 | Li, C. , Zheng, Z. . A Harmonic Impact Assessment Method for Multiple Harmonic Sources Connected to Distribution Network [未知]. |
| MLA | Li, C. 等. "A Harmonic Impact Assessment Method for Multiple Harmonic Sources Connected to Distribution Network" [未知]. |
| APA | Li, C. , Zheng, Z. . A Harmonic Impact Assessment Method for Multiple Harmonic Sources Connected to Distribution Network [未知]. |
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In order to suppress microgrid resonance and bus voltage fluctuation and further improve system stability，a novel resonance suppression strategy based on fully reduced order hybrid control algorithm is proposed. The output voltage of LRC is controlled，and the current prediction model is introduced into the inner loop to improve the dynamic response speed of the system and eliminate the PWM modulator and parameter setting，so as to realize the unit of the inner loop of current. The inverse model of the controlled object is constructed in the outer loop to realize the unitization of the voltage outer loop under the control of two-degree-of-freedom. The bus voltage can completely follow the reference voltage and restrain the resonance peak in the voltage transfer function and the bus voltage fluctuation. Finally，the proposed fully reduced order hybrid control algorithm is simulated and verified on Matlab∕Simulink platform. The results show that the proposed control strategy can effectively suppress the DC microgrid resonance and bus voltage fluctuation，and improve the dynamic characteristics and anti-interference ability of the microgrid. © 2024 Science Press. All rights reserved.
Keyword ：
Circuit resonance Circuit resonance Inverse problems Inverse problems Microgrids Microgrids Predictive control systems Predictive control systems Pulse width modulation Pulse width modulation
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| GB/T 7714 | Zheng, Feng , Wu, Xudong , Zheng, Zonghua et al. RESONANCE SUPPRESSION STRATEGY FOR DC MICROGRIDS CONSIDERING STEP-DOWN TYPE CONTROL ALGORITHMS [J]. | Acta Energiae Solaris Sinica , 2024 , 45 (11) : 61-72 . |
| MLA | Zheng, Feng et al. "RESONANCE SUPPRESSION STRATEGY FOR DC MICROGRIDS CONSIDERING STEP-DOWN TYPE CONTROL ALGORITHMS" . | Acta Energiae Solaris Sinica 45 . 11 (2024) : 61-72 . |
| APA | Zheng, Feng , Wu, Xudong , Zheng, Zonghua , Liang, Ning . RESONANCE SUPPRESSION STRATEGY FOR DC MICROGRIDS CONSIDERING STEP-DOWN TYPE CONTROL ALGORITHMS . | Acta Energiae Solaris Sinica , 2024 , 45 (11) , 61-72 . |
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为抑制微网谐振及母线电压波动,进一步提高直流系统稳定性,该文提出一种计及完全降阶型混合控制算法的直流微网谐振抑制策略.其中,针对线路调节变换器输出电压进行控制,在变换器内环引入电流预测模型,提高系统动态响应速度并省去PWM调制器以及参数的整定,实现电流内环单位化;电压外环则通过构建被控对象逆模型,实现二自由度控制下电压外环单位化.母线电压完全跟随参考电压,抑制了电压传递函数中出现的谐振峰以及母线电压波动现象.最后在Matlab/Simulink平台对所提完全降阶混合控制算法进行仿真验证,结果表明该控制策略能有效抑制直流微网谐振及母线电压波动,提高微网动态特性及抗干扰能力.
Keyword ：
二自由度控制 二自由度控制 模型预测控制 模型预测控制 电压控制 电压控制 电路谐振 电路谐振 直流微网 直流微网
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| GB/T 7714 | 郑峰 , 吴旭东 , 郑宗华 et al. 考虑降阶型控制算法的直流微网谐振抑制策略 [J]. | 太阳能学报 , 2024 , 45 (11) : 61-72 . |
| MLA | 郑峰 et al. "考虑降阶型控制算法的直流微网谐振抑制策略" . | 太阳能学报 45 . 11 (2024) : 61-72 . |
| APA | 郑峰 , 吴旭东 , 郑宗华 , 梁宁 . 考虑降阶型控制算法的直流微网谐振抑制策略 . | 太阳能学报 , 2024 , 45 (11) , 61-72 . |
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This paper proposes an optimal output synchronization control method for heterogeneous multi -agent systems (HMASs) under a performance -dependent switching topology and DoS attacks. First, local and global switched performance index functions (SPIF) and SPIF-dependent topology switching law are proposed, respectively, thus, the control performance and topology quality can be quantitatively expressed. Second, an adaptive dynamic programming (ADP) algorithm with mode switching is proposed, aimed at dealing with the difficult Hamilton-Jacobi- Bellman equation, as well as the analytical complexity caused by the switching dynamics. The convergence of the switched ADP algorithm is proven to ensure its correct implementation. Then, for different topologies, multi -mode Actor-Critic neural networks (NNs) are built for each agent to calculate optimized control policies and SPIF, respectively. Furthermore, an NNbased state compensation mechanism is designed to expand the applicability of the designed switched ADP algorithm when the leader's output transmission is unreliable. Finally, the results of numerical examples confirm that the proposed method is feasible.
Keyword ：
DoS attacks DoS attacks Heterogeneous multi-agent systems Heterogeneous multi-agent systems Switched adaptive dynamic programming Switched adaptive dynamic programming Switching topology Switching topology
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| GB/T 7714 | Qi, Yiwen , Wang, Yunlong , Geng, Honglin et al. Optimal synchronization for multi-agent systems: A performance-dependent switching topology [J]. | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS , 2024 , 361 (6) . |
| MLA | Qi, Yiwen et al. "Optimal synchronization for multi-agent systems: A performance-dependent switching topology" . | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS 361 . 6 (2024) . |
| APA | Qi, Yiwen , Wang, Yunlong , Geng, Honglin , Xing, Ning , Zheng, Zonghua , Li, He . Optimal synchronization for multi-agent systems: A performance-dependent switching topology . | JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS , 2024 , 361 (6) . |
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In electric vehicle wireless power transfer (EVWPT) systems, unipolar (UP), bipolar, and multipolar coils produced by different manufacturers are not well compatible with each other, resulting in the interoperability issues. In order to solve this contradiction, a family of self-adaptive interoperable receivers based on multiple decoupled receiving poles is proposed. Based on the two decoupled poles as the receiving coil, the proposed self-adaptive two-pole interoperable receiver can tolerate both the UP transmitting coil and the bipolar (BP) transmitting coil along one direction. On this basis, it is extended to a self-adaptive four-pole interoperable receiver. The four poles are coplanar and decoupled by using four externally decoupling windings. This self-adaptive four-pole receiver can tolerate the UP transmitting coil, the BP transmitting coil along two directions, and the quadrupole (QP) transmitting coil by forming effective equivalent mutual inductances with them, thus achieving interoperability. Moreover, misalignment tolerance is also realized. The experimental results of the two-pole and four-pole proposals show that efficient power transmission can be achieved with various transmitting coils including the UP, BP, and QP transmitting coils, realizing interoperability and misalignment tolerance.
Keyword ：
Bipolar (BP) Bipolar (BP) Coils Coils Couplers Couplers electric vehicle (EV) electric vehicle (EV) interoperability interoperability Interoperability Interoperability Magnetic flux Magnetic flux quadrupolar quadrupolar Receivers Receivers self-adaptive multipole receivers self-adaptive multipole receivers Topology Topology unipolar (UP) unipolar (UP) Voltage Voltage wireless power transfer (WPT) wireless power transfer (WPT)
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| GB/T 7714 | Zhang, Yiming , Zhou, Hangyan , Shen, Zhiwei et al. A Family of Self-Adaptive Interoperable Receivers Based on Multiple Decoupled Receiving Poles for Electric Vehicle Wireless Charging Systems [J]. | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (9) : 11794-11802 . |
| MLA | Zhang, Yiming et al. "A Family of Self-Adaptive Interoperable Receivers Based on Multiple Decoupled Receiving Poles for Electric Vehicle Wireless Charging Systems" . | IEEE TRANSACTIONS ON POWER ELECTRONICS 39 . 9 (2024) : 11794-11802 . |
| APA | Zhang, Yiming , Zhou, Hangyan , Shen, Zhiwei , Xie, Ronghuan , Zheng, Zonghua , Chen, Xiaoying . A Family of Self-Adaptive Interoperable Receivers Based on Multiple Decoupled Receiving Poles for Electric Vehicle Wireless Charging Systems . | IEEE TRANSACTIONS ON POWER ELECTRONICS , 2024 , 39 (9) , 11794-11802 . |
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This paper introduces a novel type of coupling coil structure that can be used for wireless charging of consumer electronics. The coupling loop configuration includes an eight-shaped transceiver coil and dual rectangular coils integrated on the printed circuit board (PCB). Moreover, when numerous transmitting coils of this structure are staged in parallel, it can sustain a consistent mutual inductance even when the receiver coil is not aligned, which can efficiently stabilize output power during charging. The article first models three different coil structures based on circuit theory and simulates their electromagnetic fields in commercial software and then performs a comparison among the three types of coils. Finally, it verifies the anti-offset capability of the modified structure through a 25 W wireless power transmission experimental platform. The experimental outcomes are in accordance with the simulation and theoretical analysis, and compared with traditional dual-transmitting coil structures, better overall power transmission efficiency has been achieved. This paper presents an innovative coupling coil structure designed for wireless charging consumer electronics. It showcases an eight-shaped transceiver coil in combination with dual rectangular coils integrated onto a printed circuit board (PCB). When multiple coils of this kind are arranged in parallel, they consistently maintain mutual inductance, ensuring a stable power output even in the case of misalignment of the receiver coil. By examining the results of modeling, simulations, and experiments, the performance of the proposed structure in terms of anti-offset capability is compared with traditional designs.image
Keyword ：
anti-offset anti-offset coupling coil structure coupling coil structure PCB coils PCB coils power transfer efficiency power transfer efficiency wireless charging wireless charging
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| GB/T 7714 | Zheng, Zonghua , Fang, Xin , Zhang, Yiming . Design and analysis of a coupling coil structure for high-efficiency wireless charging system for consumer electronics [J]. | INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS , 2023 , 52 (6) : 2622-2634 . |
| MLA | Zheng, Zonghua et al. "Design and analysis of a coupling coil structure for high-efficiency wireless charging system for consumer electronics" . | INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS 52 . 6 (2023) : 2622-2634 . |
| APA | Zheng, Zonghua , Fang, Xin , Zhang, Yiming . Design and analysis of a coupling coil structure for high-efficiency wireless charging system for consumer electronics . | INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS , 2023 , 52 (6) , 2622-2634 . |
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As a complex dynamically strongly coupled system, DC distribution system often suffers from voltage collapse due to system resonance. In order to suppress distribution network resonance and bus voltage fluctuation, this paper proposes a hybrid control algorithm to suppress DC distribution system resonance to further enhance DC system stability. In this paper, the output voltage of the line regulation converter (LRC) is the target of the study. A current prediction model is introduced in the inner loop of the converter control, which can enhance the dynamic responsiveness of the system and eliminate the PWM modulator and parameter tuning, achieve the unitization of the inner loop of the current. By constructing the inverse model of the controlled object, the outer voltage loop is unitized under the control of two-degree-of-freedom. The hybrid control enables the bus voltage to follow the reference voltage exactly, which suppresses resonance peaks in the voltage transfer function and reduces bus voltage fluctuations. Finally, the proposed hybrid control algorithm is simulated and verified in MATLAB/Simulink platform. The results show that the control strategy can effectively suppress the resonance and bus voltage fluctuation of the DC distribution system and enhance the dynamic characteristics and anti-interference capability of the distribution network.
Keyword ：
DC distribution system DC distribution system hybrid control algorithm hybrid control algorithm model predictive control model predictive control resonance suppression resonance suppression stability analysis stability analysis
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| GB/T 7714 | Zheng, Zonghua , Wu, Xudong , Zheng, Feng et al. Resonance suppression strategy of DC distribution system based on reduced-order hybrid control algorithm [J]. | FRONTIERS IN ENERGY RESEARCH , 2023 , 11 . |
| MLA | Zheng, Zonghua et al. "Resonance suppression strategy of DC distribution system based on reduced-order hybrid control algorithm" . | FRONTIERS IN ENERGY RESEARCH 11 (2023) . |
| APA | Zheng, Zonghua , Wu, Xudong , Zheng, Feng , Liu, Baojin , Liang, Ning . Resonance suppression strategy of DC distribution system based on reduced-order hybrid control algorithm . | FRONTIERS IN ENERGY RESEARCH , 2023 , 11 . |
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The method of using distribution transformer monitoring data for condition diagnosis of reactive power compensation devices is proposed, introducing a clustering algorithm based on u-shapelets feature extraction of time series data, and then defining the health degree to realize the diagnostic assessment of the operation condition of distribution transformer reactive power compensation using distribution transformer monitoring data without installing additional monitoring equipment. © 2023 IEEE.
Keyword ：
Clustering algorithms Clustering algorithms Condition monitoring Condition monitoring Electric power distribution Electric power distribution Electric power utilization Electric power utilization Electric transformers Electric transformers Machine learning Machine learning Reactive power Reactive power Time series Time series
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| GB/T 7714 | Chen, Yuhao , Zheng, Zonghua . A Time-series Clustering-based Method for Assessing the Condition of Reactive Power Compensation Equipment in Distribution Transformers [C] . 2023 : 61-64 . |
| MLA | Chen, Yuhao et al. "A Time-series Clustering-based Method for Assessing the Condition of Reactive Power Compensation Equipment in Distribution Transformers" . (2023) : 61-64 . |
| APA | Chen, Yuhao , Zheng, Zonghua . A Time-series Clustering-based Method for Assessing the Condition of Reactive Power Compensation Equipment in Distribution Transformers . (2023) : 61-64 . |
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Maintaining accurate and fast transient stability is essential for safe operation of the power system. With the development of wide-area measurement system, machine learning-based transient stability assessment has become the trend. However, in realistic application of the power system, the impacts on evaluation rules between critical samples and noncritical samples are different. Thus, an improved cost-sensitive coefficient assignment method based on fault severity is proposed. First, the fault severity of each unstable sample is calculated. Then, the correction coefficient of the loss function of the unstable sample is linearized according to different fault severities. The closer the sample is to the critical case, the higher the cost coefficient is. Finally, the improved cost-sensitive method is combined with the deep learning model and tested in the IEEE-39 bus system. As shown in the results, the improved cost-sensitive method, which gives different correction coefficients to samples according to different fault severities, has better performance.
Keyword ：
cost-sensitive method cost-sensitive method deep belief network deep belief network deep learning deep learning fault severity fault severity transient stability assessment transient stability assessment
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| GB/T 7714 | Lin, Jianxin , Cai, Rongbin , Zheng, Zonghua . A Transient Stability Assessment Model Based on Fault Severity Assignment [J]. | FRONTIERS IN ENERGY RESEARCH , 2022 , 10 . |
| MLA | Lin, Jianxin et al. "A Transient Stability Assessment Model Based on Fault Severity Assignment" . | FRONTIERS IN ENERGY RESEARCH 10 (2022) . |
| APA | Lin, Jianxin , Cai, Rongbin , Zheng, Zonghua . A Transient Stability Assessment Model Based on Fault Severity Assignment . | FRONTIERS IN ENERGY RESEARCH , 2022 , 10 . |
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