Power supply networks

A method of assembling an electrical assembly for an AC network, the method comprising:

• providing first and second electrical points of connection, for connecting to a transmission means of an AC network;
• assembling a first subcircuit to be electrically connected in series between the first and second electrical points of connection, wherein the assembling the first subcircuit comprises:
• providing a capacitor means;
• electrically connecting a first reactor means between the capacitor means and the first electrical point of connection, the first reactor means being in series with the capacitor means;
• electrically connecting a second reactor means between the capacitor means and the second electrical point of connection, the second reactor means being in series with the capacitor means;
• electrically connecting a first switching means in parallel with the first reactor means, the first switching means being operable between a first conducting state and a first non-conducting state, to respectively bypass or include the first reactor means in the first subcircuit;
• electrically connecting a second switching means in parallel with the second reactor means, the second switching means being operable between a second conducting state and a second non-conducting state, to respectively bypass or include the second reactor in the first subcircuit;
• assembling a second subcircuit to be electrically connected in parallel with the capacitor means, wherein the assembling the second subcircuit comprises:
• providing a varistor means;
• assembling a third subcircuit to be electrically connected in parallel with the second subcircuit, wherein the assembling the third subcircuit comprises:
• providing a third reactor means;
• providing a third switching means, the third switching means being operable between a third conducting state and a third non-conducting state, to respectively connect or disconnect the third subcircuit in the electrical assembly;
• wherein the third reactor means is either electrically connected in series with the capacitor means or electrically connected in series with the third switching means as part of the third subcircuit.