Reliability Management of the Power System in China: Present Status and Future Challenges

2014 ◽  
Vol 521 ◽  
pp. 480-484
Author(s):  
Guo Zhong Liu
Keyword(s):  
Power System ◽  
Electricity Market ◽  
System Reliability ◽  
Present Status ◽  
Large Scale ◽  
Power Transmission ◽  
Reliability Management ◽  
Future Challenges ◽  
Stochastic Characteristics ◽  
Electricity Reliability

With the developments of West-East power transmission projects, South-North power supply and the increased grid interconnections, in addition to the electricity market developments, the uncertain and stochastic characteristics of the power system operation are becoming more and more challenging and the risk of large scale blackout of the power system is increased remarkably. The electricity reliability management organization in China has been introduced. In this paper, present status of the power system reliability operation in China has been summarized and the new problems and challenges for the reliability management have been analyzed and discussed.

A Test on Probabilistic Reliability Evaluation of the Korea Power System

2007 ◽  
Vol 8 (2) ◽  
Author(s):  
TrungTinh Tran ◽  
Kwon Jungji ◽  
Jaeseok Choi ◽  
Donghun Jeon ◽  
Jinboo Choo ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Electricity Market ◽  
System Reliability ◽  
Large Scale ◽  
High Reliability ◽  
Reliability Evaluation ◽  
Transmission System ◽  
Evaluation Tool ◽  
Successful Operation ◽  
Reliability Management

The importance and conduct of necessary studies on grid reliability evaluation have become increasingly important in recent years due to the number of blackout events occurring throughout the world. Additionally, quantitative evaluation of transmission system reliability is very important in a competitive electricity environment. The reason is that successful operation of an electric power under a deregulated electricity market depends on transmission system reliability management. This paper suggests that the important input parameters of a probabilistic reliability evaluation tool for the KEPCO-system by sensitivity analysis of high reliability level operation. Simultaneously, it also presents sensitivity analysis probabilistic reliability evaluation of practical KEPCO-system long-term transmission system expansion planning (2006-2010). The tool utilized a Transmission Reliability Evaluation for Large-Scale Systems (TRELSS) which was developed by EPRI and Southern Company Services Inc.

scholarly journals Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part I: Principal

2012 ◽  
Vol 433-440 ◽  
pp. 7175-7182
Author(s):  
Mohammad Moradzadeh ◽  
René Boel
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electricity Market ◽  
Large Scale ◽  
Electric Power Systems ◽  
Coordination Control ◽  
Coordination Problem ◽  
Control Actions ◽  
System Operator

This two-part paper deals with the coordination of the control actions in a network of many interacting components, where each component is controlled by independent control agents. As a case study we consider voltage control in large electric power systems, where ever-increasing pressures from the liberalization and globalization of the electricity market has led to partitioning the power system into multiple areas each operated by an independent Transmission System Operator (TSO). Coordination of local control actions taken by those TSOs is a very challenging problem as poorly coordinated operation of TSOs may endanger the power system security by increasing the risk of blackouts. This coordination problem involves many other issues such as communication, abstraction and last but not least optimization. This first part of the paper is devoted to the principals of the coordination control, addressing some of those issues using as a case study the problem of coordination control for avoiding voltage collapse in large-scale multi-area power systems.

Impact of Large Scale Wind Power Transmission on System Dynamic Stability

2013 ◽  
Vol 448-453 ◽  
pp. 2535-2539
Author(s):  
Jun Cheng ◽  
Qiang Yang ◽  
Tao Zhu ◽  
Ai Meng Wang ◽  
Xue Feng Hu ◽  
...  
Keyword(s):  
Power System ◽  
Dynamic Stability ◽  
Large Scale ◽  
Wind Farm ◽  
System Analysis ◽  
Power Transmission ◽  
Damping Ratio ◽  
Wind Farms ◽  
Stable Operation ◽  
Large Area

With the scale of the wind farm growing fast, its impact on the power system has become increasingly apparent. So the research has a significant meaning on the characteristics of dynamic stability of the power system which contains wind farms, and the stable operation of the large area interconnected power grid. In this paper it realized the application of the double-fed wind turbine grid model by using power system analysis software PSD-BPA. The analysis of the generator power Angle curve which indicate the state after the failure of N-1 shows as follows: with the wind farms integration on the grid, the damping ratio is decreased slightly but little change after the system failure of N-1, which is still live up to the standard of grid stability.

scholarly journals Voltage Coordination via Communication in Large-Scale Multi-Area Power Systems. Part II: Simulation Results

2012 ◽  
Vol 433-440 ◽  
pp. 7183-7189
Author(s):  
Mohammad Moradzadeh ◽  
René Boel
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electricity Market ◽  
Large Scale ◽  
Test System ◽  
Distributed Model ◽  
Future Evolution ◽  
Distributed Model Predictive Control ◽  
Control Actions ◽  
Simulation Results

This two-part paper deals with the coordination of the control actions in a network of many interacting components, where each component is controlled by independent control agents. As a case study we consider voltage control in large electric power systems where ever-increasing pressures from the liberalization and globalization of the electricity market has led to partitioning the power system into multiple areas each operated by an independent Transmission System Operator (TSO). Coordination of local control actions taken by those TSOs is a very challenging problem as poorly coordinated operation of TSOs may endanger the power system security by increasing the risk of blackouts. This second part of the paper presents simulation results on a 12-bus 3-area test system, using the distributed model predictive control paradigm in order to design a coordinating model-based feedback controller. Coordination requires that each agent has some information on what the future evolution of its power flows to and from its neighbors will be. It will be shown that how the communication between agents can avoid voltage collapse in circumstances where classical uncoordinated controllers fail.

scholarly journals A Simulation Model for Assessment of Large-Scale Power System Reliability

1982 ◽  
Vol 14 (1) ◽  
pp. 60-69 ◽  
Author(s):  
John H. Blackstone ◽  
Gary L. Hogg ◽  
Alton D. Patton
Keyword(s):  
Power System ◽  
Simulation Model ◽  
System Reliability ◽  
Large Scale ◽  
Power System Reliability

scholarly journals Towards the Integration of Modern Power Systems into a Cyber–Physical Framework

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2169
Author(s):  
George C. Konstantopoulos ◽  
Antonio T. Alexandridis ◽  
Panos C. Papageorgiou
Keyword(s):  
Power Systems ◽  
Power System ◽  
Communication Networks ◽  
Electricity Market ◽  
Large Scale ◽  
Control Mechanisms ◽  
Research And Innovation ◽  
Main Challenge ◽  
Market Management ◽  
Social Environmental

The cyber–physical system (CPS) architecture provides a novel framework for analyzing and expanding research and innovation results that are essential in managing, controlling and operating complex, large scale, industrial systems under a holistic insight. Power systems constitute such characteristically large industrial structures. The main challenge in deploying a power system as a CPS lies on how to combine and incorporate multi-disciplinary, core, and advanced technologies into the specific for this case, social, environmental, economic and engineering aspects. In order to substantially contribute towards this target, in this paper, a specific CPS scheme that clearly describes how a dedicated cyber layer is deployed to manage and interact with comprehensive multiple physical layers, like those found in a large-scale modern power system architecture, is proposed. In particular, the measurement, communication, computation, control mechanisms, and tools installed at different hierarchical frames that are required to consider and modulate the social/environmental necessities, as well as the electricity market management, the regulation of the electric grid, and the power injection/absorption of the controlled main devices and distributed energy resources, are all incorporated in a common CPS framework. Furthermore, a methodology for investigating and analyzing the dynamics of different levels of the CPS architecture (including physical devices, electricity and communication networks to market, and environmental and social mechanisms) is provided together with the necessary modelling tools and assumptions made in order to close the loop between the physical and the cyber layers. An example of a real-world industrial micro-grid that describes the main aspects of the proposed CPS-based design for modern electricity grids is also presented at the end of the paper to further explain and visualize the proposed framework.

The Reliability Evaluation of Power System Based on Uncertain Linguistic Information

2013 ◽  
Vol 709 ◽  
pp. 794-798
Author(s):  
Da Rong Gao ◽  
Yu Ru Geng
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electricity Market ◽  
System Reliability ◽  
Reliability Assessment ◽  
Reliability Evaluation ◽  
Electric Power System ◽  
Power System Reliability ◽  
Target Setting ◽  
Linguistic Information

Electric power system reliability evaluation depends on reasonable target setting and calculation. This article mainly analyses the new index of power system reliability assessment in the electricity market environment, and on the basis of this, introduces the application of uncertain linguistic information in the ceremony system reliability evaluation, representing original parameters with uncertain number, and random processing fault condition happened and transfer events and process.

scholarly journals Calculating the Interface Flow Limits for the Expanded Use of High-Voltage Direct Current in Power Systems

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2863
Author(s):  
Sangwook Han
Keyword(s):  
Power System ◽  
High Voltage ◽  
Direct Current ◽  
Limit Analysis ◽  
Large Scale ◽  
Power Transmission ◽  
Metropolitan Areas ◽  
High Voltage Direct Current ◽  
Flow Limit ◽  
Current Lines

Although loads are increasingly becoming concentrated in metropolitan areas, power generation has decreased in metropolitan areas and increased in nonmetropolitan areas; hence, power transmission must occur through interface lines. To achieve this, additional transmission lines must be secured because the existing interface lines have reached their large-scale power transmission limits. The Korea Electric Power Corporation has installed many high-voltage direct current lines, thereby impacting the determination of interface power flow limits. These serve as the basis for system operations. However, knowledge of operating high-voltage direct current lines as a simple transmission line in a single power system is lacking. The effects of high-voltage direct current and its related parameters for interface flow limit analysis remain unclear. Furthermore, whether high-voltage direct current should be included in the selection of the interface lines that serve as the basis for interface flow remains unclear. In addition, whether the high-voltage direct current line faults should be included in the contingency list for determining the interface flow limits has not been considered. Additionally, it has not been determined whether to operate the DC tap when performing the simulation This study addresses these issues and determines the conditions that are necessary for determining the interface flow limits when a high-voltage direct current transmission facility has been installed in a land power system. The results conclude how to reflect the above conditions reasonably when performing the interface flow limit analysis on a system that includes the HVDC lines.

scholarly journals Power System Reliability Assessment in a Complex Restructured Power System

2019 ◽  
Vol 9 (4) ◽  
pp. 2296 ◽  
Author(s):  
N.Mahiban Lindsay ◽  
A.K. Parvathy
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electricity Market ◽  
System Reliability ◽  
Reliability Assessment ◽  
Electric Energy ◽  
Electric Power System ◽  
Power System Reliability ◽  
Bulk Power ◽  
Adequacy Assessment

The basic purpose of an electric power system is to supply its consumers with electric energy as parsimoniously as possible and with a sensible degree of continuity and quality. It is expected that the solicitation of power system reliability assessment in bulk power systems will continue to increase in the future especially in the newly deregulated power diligence. This paper presents the research conducted on the three areas of incorporating multi-state generating unit models, evaluating system performance indices and identifying transmission paucities in complex system adequacy assessment. The incentives for electricity market participants to endow in new generation and transmission facilities are highly influenced by the market risk in a complex restructured environment. This paper also presents a procedure to identify transmission deficiencies and remedial modification in the composite generation and transmission system and  focused on the application of probabilistic techniques in composite system adequacy assessment

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