1. electricity transmission system operator in normal operating mode when they meet the following conditions:
a) emission power and load in equilibrium;
b) carry the load of the transmission lines and substations main transformer in the transmission grid are under 90% rated value;
c) Other devices operate within the allowed bandwidth;
d) the system frequency within the scope allowed under the provisions of Article 4 views This assistance normal operating mode;
e) The voltage at the node on the transmission grid within the allowable range prescribed in Article 5 of this Circular to the normal operating mode;
e) The resource estimates Rooms of the system in a state of readiness to maintain the frequency and voltage of the system in the frequency range and voltage in normal operating mode, all the automatic devices working within the allow for the occurrence of unusual events will not sack load.
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