By Kate Abnett BRUSSELS (Reuters) – The European Union wants Ukraine’s electricity grid to be synchronised with the European network as soon as possible, the bloc’s energy policy chief said on Sunday, in a step that would make it more independent from Russia. Ukraine has started testing its power grid in a step to link it to a European network and decouple from a grid linked to Russia, which invaded the country on Thursday. The switch would mean Russia would no longer control technical aspects of Ukraine’s network such as grid frequency. EU energy commissioner Kadri Simson said she would seek …