Real-time digital simulation of electromagnetic transient phenomena in power transmission lines

1997 ◽  
Author(s):  
J. Parle
Keyword(s):  
Real Time ◽  
Transmission Lines ◽  
Power Transmission ◽  
Digital Simulation ◽  
Power Transmission Lines ◽  
Transient Phenomena ◽  
Electromagnetic Transient

Investigation of Signal on Transmission Lines in Power System

2014 ◽  
Vol 577 ◽  
pp. 551-555
Author(s):  
Hui Li ◽  
Liang Yuan
Keyword(s):  
Power Systems ◽  
Power System ◽  
Transmission Lines ◽  
Power Transmission ◽  
Additive White Gaussian Noise ◽  
Measurement Unit ◽  
Power Transmission Lines ◽  
Electromagnetic Transient ◽  
Power System Harmonics

Single of phasor measurement unit (PMU) in smart grid is analyzed. On the power transmission links, single of voltage and current are measured by kinds of PMUs, messages of PMUs are concentrated to PDC (Phasor data concentrator) and super PDC in power systems. Signal quality is important to power transmission, power utilization and power control for stability a power system. Harmonics, inter-harmonics, decaying DC (direct current) offset, and additive white Gaussian noise are analyzed. Odd-number harmonics and inter-harmonics affect the quality of power signals. Decaying DC offsert components influence current signal of power transmission line whose model is modeled by EMTP (Electromagnetic transient program) worldwide. Noise is generally a negligible factor on power transmission lines, since signal-to-noise (SNR) is always below 40 dB.

scholarly journals Research on Defensive Strategy of Real-Time Price Attack Based on Multiperson Zero-Determinant

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Zhuoqun Xia ◽  
Zhenwei Fang ◽  
Fengfei Zou ◽  
Jin Wang ◽  
Arun Kumar Sangaiah
Keyword(s):  
Smart Grid ◽  
Real Time ◽  
Transmission Lines ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
Defensive Strategy ◽  
The Real ◽  
Load Demand ◽  
Home Energy Management ◽  
Time Price

The smart grid solves the growing load demand of electrical customers through two-way real-time communication of electricity supply and demand sides and home energy management system (HEMS). However, these technical features also bring network security risks to the real-time price signal of the smart grid. The real-time price attack (RTPA) can maliciously raise the real-time price in smart meter, resulting in an increase in electrical customers load demand, causing the extensive damage to the power transmission lines due to overload. In this paper, we based on the behavioral relationship between load demand of electrical customers and real-time price of electricity suppliers (ES), defined the game relationship between RTPA, ES, and electrical customers, established a price elasticity of electricity demand (PEED) model, and proposed a defensive strategy of real-time price attack based on multiperson zero-determinant strategy (MPZDS). The experimental results show that the combination of MPZDS to some extent cut the expected load demand of electrical customers and protect the safety of power transmission lines.

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