Comprehensive Evaluation of Grid-Connected Distributed Generation Operation

2014 ◽  
Vol 1070-1072 ◽  
pp. 965-971
Author(s):  
Yu Wei ◽  
Yu Chen Chen ◽  
Zhi Qiang Yuan ◽  
Bo Liu

More and more distributed generations are interconnected to distribution network. Its operation state should be evaluated comprehensively and effectively. This paper gives index of each level to judge interconnecting operation through comparing guides of interconnecting distributed resources with electric power system in different countries. A comprehensive and complete evaluation model based on Analytical Hierarchy Process (AHP) and Fuzzy Synthetically Evaluating Method is proposed. The index weights are set through analyzing the relationship between each index, while certainties and uncertainties are described by setting membership grade. Finally, a demonstration is given and reasonable analysis results are attained, thus the feasibility and efficiency of the model that might be conductive to the description of interconnecting distributed resources with electric power system are verified.

2014 ◽  
Vol 644-650 ◽  
pp. 4052-4060
Author(s):  
Cheng Zhi Bian ◽  
Bo Wang ◽  
Fei Tang ◽  
Yu Xi Chen ◽  
Jun Jia ◽  
...  

The reliability assessment is a key function that should be performed in advance of any security deployment. Since the reliability of electric power communication channel is influenced by many factors, modification factor set for telecommunication channel of electric power system is needed. According to past research, the confidence for equipment reliability would decline caused by the lack of failure data. Therefore, the paper modified each initial index calculated only by the failure data to obtain the reliability. Comprehensive modification factor is obtained according to the weight of each index calculated with Hierarchy Process whose computing standard is the importance of the modification factor in the actual operation. Finally, an instance communication network of power control system is modeling to test the validity of reliability assessment. The result supports the usefulness of the reliability assessment.


Author(s):  
Bora Akyol ◽  
Jereme Haack ◽  
Cody Tews ◽  
Brandon Carpenter ◽  
Anand Kulkarni ◽  
...  

The number of sensors connected to the electric power system is expected to grow by several orders of magnitude by 2020. However, the information networks which will transmit and analyze the resulting data are ill-equipped to handle the resulting volume with reliable real-time delivery. Without the ability to manage and use this data, deploying sensors such as phasor measurement units in the transmission system and smart meters in the distribution system will not result in the desired improvements in the power grid. The ability to exploit the massive data being generated by new sensors would allow for more efficient flow of power and increased survivability of the grid. Additionally, the power systems of today are not capable of managing two-way power flow to accommodate distributed generation capabilities due to concerns about system stability and lack of system flexibility. The research that we are performing creates a framework to add “intelligence” to the sensors and actuators being used today in the electric power system. Sensors that use our framework will be capable of sharing information through the various layers of the electric power system to enable two-way information flow to help facilitate integration of distributed resources. Several techniques are considered including use of peer-to-peer communication as well as distributed agents. Specifically, we will have software agents operating on systems with differing levels of computing power. The agents will cooperate to bring computation closer to the data. The types of computation considered are control decisions, data analysis, and demand/response. When paired with distributed autonomous controllers, the sensors form the basis of an information system that supports deployment of both micro-grids and islanding. Our efforts in the area of developing the next generation information infrastructure for sensors in the power grid form the basis of a broader strategy that enables better integration of distributed generation, distribution automation systems and decentralized control (micro-grids).


2011 ◽  
Vol 383-390 ◽  
pp. 2540-2544
Author(s):  
Dong Jiang Li ◽  
Yi Zhang

This paper analyzes operation problems of medium voltage switchgear cabinet in the electric power system. According to the international standards of IEC 61850, model the new arc protection device on the bus and analysize the relationship of abstract communication serivce inferface (ACSI) mapping to manufacturing message specification (MMS). Finally, MMS PDU formation and decoding are described specifically based on ASN.1 encoding rules.


2018 ◽  
Vol 138 (6) ◽  
pp. 412-415 ◽  
Author(s):  
Ryo Maeda ◽  
Takeshi Fukuoka ◽  
Yasutoshi Yoshioka ◽  
Atsushi Harada

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