Geometric Algebra in Nonsinusoidal Power Systems: A Case of Study for Passive Compensation

New-generation power networks, such as microgrids, are being affected by the proliferation of nonlinear electronic systems, resulting in harmonic disturbances both in voltage and current that affect the symmetry of the system. This paper presents a method based on the application of geometric algebra (GA) to the resolution of power flow in nonsinusoidal single-phase electrical systems for the correct determination of its components to achieve passive compensation of true quadrature current. It is demonstrated that traditional techniques based on the concepts of Budeanu, Fryze or IEEE1459 fail to determine the interaction between voltage and current and therefore, are not suitable for being used as a basis for the compensation of nonactive power components. An example is included that demonstrates the superiority of GA method and is compared to previous work where GA approaches and traditional methods have also been used

Illawarra labour force trends

This e-brief, which is part of a series relating to all NSW regions, sets out key labour force trends for the residents of the Illawarra region. Data has been sourced from the Australian Bureau of Statistics’ (ABS) monthly Labour Force Survey. The ABS divides NSW into 28 regions; 15 in Greater Sydney and 13 in Regional NSW. Covered are four key labour force indicators: Employment (full-time and part-time); The participation rate; The unemployment rate; and The youth unemployment rate. A map of the Illawarra region is included at the end of the e-brief. The map also shows the NSW electorates located wholly or partly within the region. The e-brief finishes with a short section on labour force definitions and methodological notes

Hunter Valley labour force trends

This e-brief, which is part of a series relating to all NSW regions, sets out key labour force trends for the residents of the Hunter Valley region. Data has been sourced from the Australian Bureau of Statistics’ (ABS) monthly Labour Force Survey. The ABS divides NSW into 28 regions; 15 in Greater Sydney and 13 in Regional NSW. Covered are four key labour force indicators: Employment (full-time and part-time); The participation rate; The unemployment rate; and The youth unemployment rate. A map of the Hunter Valley region is included at the end of the ebrief. The map also shows the NSW electorates located wholly or partly within the region. The e-brief finishes with a short section on labour force definitions and methodological notes.&nbsp