Non‐contact voltage measurement of three‐phase overhead transmission line based on electric field inverse calculation

Xiao, Di; Ma, Qichao; Zheng, Qi; Zhang, Zhanlong

doi:10.1049/iet-gtd.2017.1849

Cited by 26 publications

(16 citation statements)

References 19 publications

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“…CSM has been widely used to solve static or quasi-static fields in the past 20 years, which is one of the main algorithms for electrostatic field numerical calculation [11][12][13][14][15][16]. The various electromagnetic calculation methods combined with CSM are used to accurately calculate the electric field near the transmission lines [17][18][19].…”

Section: Related Workmentioning

confidence: 99%

PSO/GA Combined with Charge Simulation Method for the Electric Field Under Transmission Lines in 3D Calculation Model

Tian

et al. 2019

Electronics

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The accurate calculation of electric field intensity under transmission lines is more and more important with the expansion of high voltage engineering, which largely determines the site selection and design of transmission projects. In order to get more accurate results, a methodology of a charge simulation method (CSM) combined with an intelligent optimization algorithm for a 3D calculation model is proposed in this paper. Three key points are emphasized for special mention in this optimized charge simulation method (OCSM). First, the number of sub-segments on the finite length conductor, the position and number of the simulating charge set on a sub-segment are taken as the optimization parameters for unified calculation. Secondly, the fitness function of optimization algorithm is constructed by two values, voltage relative error and electric field intensity relative error. Thirdly, a finite element method (FEM) was used to obtain the electric field intensities, which are compared with the results of the proposed algorithm. A simulation case is carried out on a 3D calculation model of 220 kV transmission lines, which verify the effectiveness of the optimization algorithm. The proposed OCSM solves the parameter optimization problem of CSM in the 3D computational model, which considers physical shape of wire span, and has the advantages of strong global search ability and higher calculation accuracy.

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Section: Related Workmentioning

confidence: 99%

PSO/GA Combined with Charge Simulation Method for the Electric Field Under Transmission Lines in 3D Calculation Model

Tian

et al. 2019

Electronics

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“…Furthermore, it resolves the issue of trapping in a local optimal solution during the rapid convergence process. The optimization algorithm is elaborated in [8], therefore, only its flow chart is shown here.…”

Section: Optimization Algorithe For the Inversionmentioning

confidence: 99%

“…The inverse calculation is regarded as a multi-objective optimization process embedded with OTLs' electric field calculation, in which the measured electric field data are used as the input and the OTLs' voltages are the target of optimization. This non-contact voltage measurement method has some self-evident advantages in safety and convenience [8]- [10], which would be much more useful for the on-line monitoring of OTLs' operating state.…”

Section: Introductionmentioning

confidence: 99%

“…With further researches, there are mainly two aspects to promotion. On one hand, with consideration of the complex optimizing computation, the multi-objective optimization algorithm and constraint conditions can be improved and the latest relevant study can be seen in [8]. On the other hand, an improved OTLs' electric field calculation model, which takes more actual operating conditions of the OTLs and environmental factors into account, promotes the effect of non-contact measurement.…”

Section: Introductionmentioning

confidence: 99%

“…After that, an optimization algorithm embedding with the improved electric field mathematical model is used for the voltage inversion calculation. To improve the convergence speed and calculation stability, the improved algorithm [8] absorbs the advantages of particle swarm algorithm and genetic algorithm. The voltage value can be calculated point by point in the time domain according to the mathematical models and the optimization algorithm.…”

Section: Introductionmentioning

confidence: 99%

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Improved Three-Dimension Mathematical Model for Voltage Inversion of AC Overhead Transmission Lines

Xiao

Zhao

et al. 2019

IEEE Access

Self Cite

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The voltages on the AC overhead transmission lines (OTLs) can be calculated inversely based on the measured electric field around the lines, which will much contribute to the non-contact condition monitoring of OTLs. To more realistically simulate the actual operating state of OTLs in the wild, a refined catenary equation of OTL with consideration of the vertical suspension and horizontal deflection is established, and the according improved three-dimensional electric field mathematical model are proposed. Furthermore, the OTLs' voltages are calculated based on an improved optimization algorithm that combines particle swarm algorithm and genetic algorithm. Some simulation and experiment cases by setting different measurement errors and wind speeds are employed to verify the improving effect of the proposed model. The analysis results shown that the three-phase maximum amplitude error is 6.48% and maximum phase error is 6.26 • when the electric field measuring error is as high as 20% (beyond the normal level); on the other hand, the maximum amplitude error and phase error are 2.54% and 0.96 • respectively when the wind speed is set to the strong wind of 15m/s. The results demonstrate the accuracy and robustness of the proposed model. INDEX TERMS Overhead transmission lines (OTLs), three-dimension electric field mathematical model, accuracy of inversion, non-contact condition monitoring.

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Cyber-enabled grids: Shaping future energy systems

Pong

Annaswamy

Kroposki

et al. 2021

Advances in Applied Energy

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Non‐contact voltage measurement of three‐phase overhead transmission line based on electric field inverse calculation

Cited by 26 publications

References 19 publications

PSO/GA Combined with Charge Simulation Method for the Electric Field Under Transmission Lines in 3D Calculation Model

PSO/GA Combined with Charge Simulation Method for the Electric Field Under Transmission Lines in 3D Calculation Model

Improved Three-Dimension Mathematical Model for Voltage Inversion of AC Overhead Transmission Lines

Cyber-enabled grids: Shaping future energy systems

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