scholarly journals Technologies for estimation and forecasting of photovoltaic generation output supporting stable operation of electric power system

2018 ◽  
Vol 13 (3) ◽  
pp. 350-355 ◽  
Author(s):  
Osamu Yatsubo ◽  
Shota Miyake ◽  
Nozomu Takada
Keyword(s):  
Power System ◽  
Electric Power ◽  
Electric Power System ◽  
Stable Operation ◽  
Photovoltaic Generation

scholarly journals Electric Power System Operation Mechanism with Energy Routers Based on QoS Index under Blockchain Architecture

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 418 ◽  
Author(s):  
Gangjun Gong ◽  
Zhening Zhang ◽  
Xinyu Zhang ◽  
Nawaraj Kumar Mahato ◽  
Lin Liu ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Power System ◽  
Electric Power ◽  
Distribution Networks ◽  
Electric Power System ◽  
Control Flow ◽  
Utilization Efficiency ◽  
Stable Operation ◽  
Bidirectional Power Flow ◽  
Transmission And Distribution

With the integration of highly permeable renewable energy to the grid at different levels (transmission, distribution and grid-connected), the volatility on both sides (source side and load side) leading to bidirectional power flow in the power grid complicates the control mechanism. In order to ensure the real-time power balance, energy exchange, higher energy utilization efficiency and stability maintenance in the electric power system, this paper proposes an integrated application of blockchain technology on energy routers at transmission and distribution networks with increased renewable energy penetration. This paper focuses on the safe and stable operation of a highly penetrated renewable energy grid-connected power system and its operation. It also demonstrates a blockchain-based negotiation model with weakly centralized scenarios for “source-network-load” collaborative scheduling operations; secondly, the QoS (quality of service) index of energy flow control and energy router node doubly-fed stability control model were designed. Further, it also introduces the MOPSO (multi-objective particle swarm optimization) algorithm for power output optimization of multienergy power generation; Thirdly, based on the blockchain underlying architecture and load prediction value constraints, this paper puts forward the optimization mechanism and control flow of autonomous energy coordination of b2u (bottom-up) between router nodes of transmission and distribution network based on blockchain.

scholarly journals A New Transient Frequency Acceptability Margin Based on the Frequency Trajectory

Energies ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 12
Author(s):  
Ancheng Xue ◽  
Jiehao Cui ◽  
Jiawei Wang ◽  
Joe Chow ◽  
Lei Yue ◽  
...  
Keyword(s):  
Power Systems ◽  
Power System ◽  
Electric Power ◽  
Critical Frequency ◽  
Frequency Offset ◽  
Electric Power System ◽  
Stable Operation ◽  
Time Duration ◽  
Small Power ◽  
Multiple Parameters

When the electric power system is disturbed, the transient frequency deviation may be large and harmful to its stable operation, especially in some small power systems. However, there is a lack of transient frequency acceptability margin (TFAM) which could be directly used by dispatchers. In this paper, a new TFAM is proposed based on the transient frequency acceptability index (TFAI). First, based on the frequency trajectory and the philosophy of “different weights to the different frequency offset levels”, a new TFAI is proposed combined with frequency thresholds and time duration limits. The effectiveness of the TFAI is verified, and the critical acceptable disturbance is determined by using the TFAI. Then, a new TFAM is proposed based on the critical acceptability disturbance. The proposed TFAM can quantitatively describe the distance of the operation point from the critical frequency acceptability point, and distinguish the transient frequency acceptability of different disturbances. Finally, with different simulations, the effectiveness and applicability of the proposed TFAM are verified. The TFAM can be used for disturbances with single-parameter and multiple parameters.

Smart Grid Technology Is Analysed for the Influence of the Electric Power System Planning

2015 ◽  
Vol 734 ◽  
pp. 688-691
Author(s):  
Ji Yao ◽  
Zhi Qiang Du
Keyword(s):  
Smart Grid ◽  
Power System ◽  
Electric Power ◽  
Power Grid ◽  
Electric Power System ◽  
Stable Operation ◽  
Grid Technology ◽  
Grid System ◽  
Electricity Grid ◽  
Power Grid Planning

Based on the smart grid connected to the electricity grid system as the research object, from the development of electric technology and intelligent power grid planning of power system significance and influence of these two aspects, the work can only be connected to the electric power system grid technology has carried on the detailed analysis and elaboration, and thus demonstrates the do a good job for the whole power grid system stable operation and the role and impact of long-term development.

Expectation for Smart Inverter & DERMS for Electric Power System Task

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