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Hidetsugu Yagi attempted to devise a system for wireless power transmission. Whilst he managed to demonstrate a proof of concept, the engineering problems proved to be more onerous than conventional systems. His work however, led to the invention of the yagi antenna.
Another form of wireless power transmission has been studied for transmission of power from solar power satellites to the earth. A high power array of microwave transmitters would beam power to a rectenna in an unpopulated desert area. Formidable engineering, environmental, and economic problems face any solar power satellite project.
There is a potential for the use of superconducting cable transmission in order to supply electricity to consumers, given that the waste is halved using this method. Such cables are particularly suited to high load density areas such as the business district of large cities, where purchase of a right of way for cables would be very costly.
Хидэцугу Йаги попытался изобрести систему для беспроводной передачи энергии. Он сумел продемонстрировать доказательство концепции, но технические проблемы, оказалось, были более трудными, чем обычные системы. Его работа, однако, привела к изобретению антенны Йаги.
Другая форма беспроводной передачи энергии была изучена для передачи энергии от солнечных спутников до земли. Мощный источник электропитания микроволновых передатчиков передавал бы электроэнергию к антенне со встроенным выпрямителем в безлюдной области пустыни. Огромная разработка, экологические, и экономические проблемы сталкиваются с любым солнечным проектом спутника. Есть потенциал для использования суперпроведения кабельной передачи, чтобы поставлять электричество потребителям, при условии, что отходы сокращаются вдвое, используя этот метод. Такие кабели особенно подходят высоко для областей плотности груза типа делового района больших городов, где закупка права пути для кабелей была бы очень дорогостоящая.
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ELECTRICITY MARKET REFORM
Transmission is a natural monopoly and there are moves in many сountries to separately regulate transmission. In the USA the Federal Energy Regulatory Commission had issued a notice of proposed rulemaking setting out a proposed Standard Market Design (SMD) that would see the establishment of Regional Transmission Organizations (RTOs). The first RTO in North America is the Midwest Independent Transmission System Operator (MISO). MISO's authority covers parts of the transmission grid in the United States midwest and one province of Canada (through a coordination agreement with Manitoba Hydro). MISO also operates the wholesale power market in the United States portion of this area.
In July 2005, the new FERC chairman, Joseph Kelliher announced the end of SMD efforts because "the rulemaking had been overtaken by the voluntary formation of RTOs and ISOs" according to FERC. Spain was the first country to establish a Regional Transmission Organization. In that country transmission operations and market operations are controlled by separate companies. The transmission system operator is Red Electrica de Espana (REE) and the wholesale electricity market operator is Operador del Mercado Iberico de Energia - Polo Espanol, S.A. (OMEL). Spain's transmission system is interconnected with those of France, Portugal, and Morocco.
Health concerns
It is argued by some that living near high voltage power lines presents a danger to animals and humans. Some have claimed that electromagnetic radiation from power lines elevates the risk of certain types of cancer. Some studies support this theory, and others do not. Most studies of large populations fail to show a clear correlation between cancer and the proximity of power lines, but a 2005 Oxford University study did find a statistically significant elevation of childhood leukaemia rates. Recent studies (2003) connect DNA- breakage with low level AC magnetic fields.
The current mainstream scientific view is that power lines are unlikely to pose an increased risk of cancer or other somatic diseases.
