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检索条件"机构=State Key Laboratory of Smart Gird Protection and Control"

共 377 条记录，以下是221-230 订阅

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Short-term operation planning of power grid flexibility regulation under uncertain risk scenario

Short-term operation planning of power grid flexibility regu...

引用

Sustainable Power and Energy Conference (iSPEC)

作者： Dongliang Xie Cai Wang Yusheng Xue Yening Lai Zheng Zhang Linjun Cai Xiaofang Song Huilin Zhang Chen Yu State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation (SGRPRI) Nanjing China

ISBN: (纸本)9781665414401

Traditional power grids for volatility, uncertainty, usually set a pro rata sufficient spare margin, but when the new energy grid capacity increases, if the volatility is so great, this "one size fits all" decision is often expensive, too high thermal power start-up and even result in waste of resources. Therefore, based on the study of the multi-scale flexibility control measures of source network load storage, this paper puts forward the operation planning algorithm to reduce the total operation control risk effectively by coordinating and lowering the backup measures. Synergy with the value of various flexible resources in short-term operation planning to prevent and control the risk of wind, light and power outages in power systems, to achieve flexible operation planning. Finally, through the study, the algorithm proposed in this paper is verified that the algorithm can solve the problem of risk prevention and control in operation planning more economically and safely under the condition of large-scale grid-connected new energy.

关键词： Costs Force measurement Uncertainty Prediction algorithms Regulation Power grids Planning

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Study on the corresponding relationship between critical points of P-V Curve and V-Q curve of simple thevenin equivalent system 1

Study on the corresponding relationship between critical poi...

引用

1st IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2020

作者： Li, Xuan Li, Zhaowei Guan, Linlin Wu, Xuelian Mei, Yan Li, Jun State Grid Electric Power Research Institute State Key Laboratory of Smart Grid Protection and Operation Control Nanjing211106 China

ISBN: (纸本)9781728196596

With the further increase in power demand for highly concentrated load centers and the gradual formation of a power system with a high proportion of new energy sources, China will face severe risk of voltage instability. In this paper, firstly, the load bus voltage equation of simple Thevenin equivalent system is derived, and then the P-V and V-Q curves are obtained respectively. Secondly, the mutual restriction relationship between active and reactive power of load is discussed when there is a real value solution to the voltage. Finally, the relationship between the voltage of critical points of the P-V curves and the reactive power of the load, and the relationship between the voltage of critical points of the V-Q curves and the active power of the load are deduced respectively. The relationship of one-to-one correspondence between critical points of P-V curves and critical points of V-Q curves is proved according to the mutual restriction between active power and reactive power of load and monotonicity of critical voltage and load power function. © 2020 IEEE.

关键词： Reactive power

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Instantaneous Frequency Measurement and Tracking under Out of Step Oscillation

Instantaneous Frequency Measurement and Tracking under Out o...

引用

IEEE International Conference on smart Grid and smart Cities (ICSGSC)

作者： Ke Su Cai Gan Feng Zhang Rong Rong Ji Sui Sheng Zheng Cheng Lin Xia Tian Yu Lan State Key Laboratory of Smart Grid Protection and Control NARI Group Corporation State Grid Electric Power Research Institute NanJing China Ultra High Voltage Branch Company State Grid Zhejiang Powe Company HangZhou China NARI Group Corporation State Grid Eelectric Power Research Institute NanJing China

As an important operating parameter of the power system, the instantaneous frequency of the current can reflect the actual operating state of the current system, especially when the system is out of step. The characteristics of the current in the oscillation line are analyzed in this paper. An algorithm for measuring instantaneous frequency of current while power system swings is presented, based on the broad definition of angular frequency. According to the feature of the actual power system, a new method for measuring the instantaneous current frequency by real-time sampling is proposed. Finally, the algorithm is simulated on the model of the equivalent systems. When the system swings, the real-time frequency is gained by sampling the current in the line, combined with the frequency of the equivalent machine of both sides. It shows that the obtained current frequency is reasonable and effective, compared to the characteristics of the system.

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Assessment of Reactive Power Reserve for DC Continuous Commutation Failure 6

Assessment of Reactive Power Reserve for DC Continuous Commu...

引用

6th International Conference on Power and Renewable Energy, ICPRE 2021

作者： Chen, Yingjie Liu, Hui Chen, Qian Xu, Wei Yang, Junjun NARI Group Corporation / State Grid Electric Power Research Institute State Key Laboratory of Smart Grid Protection and Control Nanjing China State Grid Beijing Electric Power Co. Ltd. Beijing China State Grid Beijing Electric Power Research Institute Beijing China

ISBN: (纸本)9781665449618

Real-time assessment of the risk of continuous commutation failure of the thyristor-based phase-controlled commutation direct current transmission system (LCC-HVDC) and timely preventive control measures are of great significance to ensure the safe and stable operation of the large power grid. This paper proposes a method for evaluating effective dynamic reactive power reserve of generators to deal with DC continuous commutation failure. The maximum reactive power increment of the generator corresponding to the secondary drop of the converter bus voltage is defined as the effective dynamic reactive power reserve. The effective dynamic reactive power reserve at the critical point is called the maximum effective dynamic reactive power reserve. When the system dynamic reactive power reserve is less than the reserve capacity threshold, a two-stage preventive control measure searching method is adopted. First, increase the terminal voltage of the generator and the static reactive power compensation. If the requirements are still not met, the start-up unit measures will be adopted. An example of an actual power grid verifies the effectiveness of the method. © 2021 IEEE.

关键词： Reactive power

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Review of cyber physical system and cyber attack modeling 12

Review of cyber physical system and cyber attack modeling

引用

12th IEEE PES Asia-Pacific Power and Energy Engineering Conference, APPEEC 2020

作者： Fan, Haofei Ni, Ming Zhao, Lili Li, Manli State Key Laboratory of Smart Grid Protection and Control Nari Group Corporation Nari Technology Co. Ltd Nanjing China

ISBN: (纸本)9781728157481

Cyber Physics Systems consists of physical systems and information systems. Modern power systems are increasingly dependent on information systems, experts and scholars are paying more and more attention to cyber attacks on CPS. This paper first introduces the existing research on cyber physical power system. Then this paper reviews the current status of existing cyber attacks. Finally, the modeling method for CPS is summarized such as correlation characteristic matrix, graph theory, complex network theory, finite state machine, mathematical programming and cellular automata method. These methods have vital theoretical and practical significance for the research of cyber physical power system. © 2020 IEEE.

关键词： Graph theory

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A Simplified Matching Algorithm of the Carbon Neutrality Path for the Industry Zones

A Simplified Matching Algorithm of the Carbon Neutrality Pat...

引用

IEEE Innovative smart Grid Technologies - Asia (ISGT Asia)

作者： Jingqi Jin Nan Li Yening Lai Jie Huang Xuetong Chen State Key Laboratory of Smart Grid Protection and Control NARI Technology Co. Ltd. Nanjing China State Grid Qinghai Electric Power Company Economic and Technological Research Institute Xining China

ISBN: (纸本)9798350399677

After the carbon peaking and carbon neutrality goals were determined, industrial zones with high energy consumption began investigating their own carbon emission paths and formulating carbon emission reduction strategies. According to the zone's carbon emission projections, a reasonable estimate of the long-term carbon neutrality curve can be made, which has significant research implications for describing the carbon emission path and formulating carbon emission reduction measures. This paper uses the modified Kaya identity to build a model of the zone's carbon emissions. It proposes an algorithm for the zone's carbon-neutrality path matching the carbon peak path and determines the carbon emission peak year and carbon budget of the zone for achieving carbon peaking and carbon neutrality goals.

关键词： Industries Energy consumption Asia Carbon neutral smart grids

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Comprehensive Evaluation Index System and Method for Reactive Power Support Capability of Wind/Photovoltaic/Storage Power Stations

Comprehensive Evaluation Index System and Method for Reactiv...

引用

IEEE International Conference on Cyber Technology in Automation, control, and Intelligent Systems

作者： Jinyuan Fang Kai Hou Yingwei Jiang Bingtuan Gao Guozhong Zhang Xuewei Shi School of Electrical Engineering Southeast University Nanjing Jiangsu China State Key Laboratory of Smart Grid Protection and Control Nanrui Group Co. Nanjing Jiangsu China State Grid Hebei Zhangjiakou Scenery Storage and Transmission New Energy Co. Ltd Zhangjiakou Hebei China

High proportion of renewable energy integrated into the power grid results in lower system inertia and deterioration of voltage characteristics. Understanding the reactive power support characteristics of wind/photovoltaic (PV) /storage power station is critical for achieving coordinated control of their reactive power. In this regard, the paper proposes a comprehensive evaluation index system that considers voltage, reactive power support, and reactive power control to evaluate the reactive power support capability of wind/photovoltaic/storage power station. To validate the effectiveness of the index system, this paper constructs a simulation scenario of a wind/photovoltaic/storage power station connected to the regional power grid and calculates the corresponding indices. The fuzzy membership function is used to normalize the indicators. The subjective and objective combination weighting method is used to assign values to the indicators, and the reactive power support capability ratings of each power station are calculated. Finally, the reactive power support capability of the wind/photovoltaic/storage power plant was analyzed in combination with simulation scenarios, and the effectiveness of the comprehensive evaluation index system and method was verified.

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A Hybrid Simulation Study of the Herding Behavior Effects in the China National Carbon Market

A Hybrid Simulation Study of the Herding Behavior Effects in...

引用

IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Xuetong Chen Jie Huang Shuai Jin Yifei Zhang HengYu Ling State Key Laboratory of Smart Grid Protection and Control NARI Technology Co. Ltd. Nanjing China

ISBN: (纸本)9781665434263

Mitigating climate change is a global consensus. China is aiming to have carbon emissions peak before 2030 and achieve carbon neutrality before 2060. The China national carbon market is one of the key measures to achieve this ambitious “30•60” target. Compliance enterprises, financial institutions, and individual investors are allowed to participate in the national carbon market and the complex trading interactions among these heterogeneous participants will make the market dynamics difficult to predict and analyze, bringing challenges to market design and regulations. Guided by the framework of cyber-physical-social system in energy (CPSSE), this paper constructs a hybrid simulation environment based on the Dynamic Simulation platform for Macro-Energy Systems (DSMES), in order to study the herding behavior effects on carbon market under different scenario settings. The behavior models of different carbon traders such as compliance enterprises, offset developers and financial institutions are analyzed and constructed. Then, the herding behavior effects are studied under different market scenario settings such as the supply of carbon emission allowance (CEA) and carbon offset credits (COC). Finally, key insights are discussed based on multi-scenario case studies, which provide decision support for market design and regulation.

关键词： Climate change Analytical models Atmospheric measurements Conferences Carbon dioxide System integration Particle measurements

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An Assessment Method of Carbon Emission Reduction Additionality in Grid Dispatching Model

An Assessment Method of Carbon Emission Reduction Additional...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Yening Lai Xuetong Chen Jie Huang Shuai Jin State Key Laboratory of Smart Grid Protection and Control NARI Technology Co. Ltd. Nanjing China

ISBN: (纸本)9781665434263

Achieving the national goal of “carbon peak, carbon neutral” is a complex and challenging task. The carbon emission of the power industry accounts for nearly 40% of the total carbon emission, so the task of reducing emissions is heavy. However, carbon emission reduction in the power industry requires the joint effort of all segments of power generation, transmission, distribution, and consumption. It should be noted that the contribution of scientific assessment of carbon emission reduction in each segment is essential. This paper proposes a framework for assessing the carbon emission reduction additionality of subjects in every link of the power system. The proposed framework identifies the carbon emission reduction additionality of each link of power production, transmission, and consumption by comparing the carbon emission reduction benefits of a given measure with the intervention of the measure. In the evaluation framework, a multi-dispatching scenario evaluation method based on AC optimal power flow (AC OPF) is proposed to evaluate the carbon emission reduction benefits of the power grid under the clean-energy-consumption dispatching and network-1oss-minimization dispatching modes. The proposed method examines different transmission power scenarios of a new energy outgoing ultra-high voltage line and analyzes the carbon emission reduction additionality of the power grid. Finally, the feasibility of the proposed method is verified by simulations using a provincial power grid as a case study.

关键词： Power measurement Carbon dioxide System integration Production Transmission line measurements Power grids Dispatching

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Optimal Scheduling of Thermoelectricity in Integrated Energy System Based on Waste Heat Recovery from Power to Gas and Flexible Thermoelectricity Ratio

Optimal Scheduling of Thermoelectricity in Integrated Energy...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Dongmei Yang Yu Gao Qi Wang Yan Chen Yuchen Guo Meng Wang the State Key Laboratory of Smart Grid Protection and Operation Control Nari Technology Co. Ltd. Nanjing China School of Nari Electric and Automation Nanjing Normal University Nanjing China

Aiming at the anti-peak shaving characteristics of wind power and the problem of wind curtailment caused by the ‘fixing electricity by heat’ of CHP units, an optimal scheduling method in integrated energy systems based on waste heat recovery from power to gas(P2G) and flexible thermoelectricity ratio in CHP is proposed. First, the P2G energy coupling mechanism and the feasibility of P2G waste heat recovery and utilization are analyzed. P2G equipment is introduced into the system and the remaining heat is recycled and utilized to promote wind power grid-connected consumption. Then, the principle of flexible thermoelectric ratio adjustment of CHP is analyzed, so that CHP can adjust the thermoelectric ratio following the trend of wind power output and the energy supply pressure of electric heat load, so as to improve the wind power consumption capacity of the system. Finally, the optimal scheduling model of the integrated energy system is constructed with the goal of minimizing the daily operating cost. The simulation example shows that the proposed scheduling method optimizes the thermoelectric coupling relationship of the system, effectively improves the wind power absorption capacity of the system, and has good social and economic benefits.

关键词： Couplings Cogeneration Optimal scheduling System integration Wind power generation Waste heat Heat recovery

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