The company's plan to improve the quality of feeds
Supporting cable maintenance teams and supporting kiosk maintenance teams Repairing parts of old cables that have many connections Commitment to cable laying specifications, especially when there is more than one cable in the same stream and implementing the transposition feature in order to avoid imbalance
And the implementation of an interchange property on cable laying paths
For the network (medium voltage) conducting quality studies of the supply to all distributors in the network to observe the level of efforts that exceeded the permissible percentage ± 5% according to the schedule with taking the necessary measures to improve the efforts. For subscribers, an inventory of distribution transformers was carried out, in which the voltage change rate exceeded 5%, 10%, and 15%, with measures taken to improve efforts such as changing transformers, adding transformers, injecting feeders or strengthening networks according to the schedule.
For the network (medium voltage) measuring the ground with kiosks, distributors and stations and reaching the ground resistance to international rates.
Feed the distributors directly from the transformer station.
Separating the industrial area distributors from the residential distributors.
Study of simultaneous separation of distributors on the same bar. Coordination between distribution companies and urban devices so that the company is informed of the nature of the plant loads so that the factories polluting the network and subscribers are isolated and placed on a special ring or a special distributor as much as possible to remove the feeders of the overhead lines from the same common link point feeding the sensitive loads of the subscriber.
The use of large ground resistance in Delta 66/11 K transformers. P . Reducing the time period of failure by installing Current Limiting Fuse or modem static Circuit Breaker on feeders and reducing the grading margin between breakers. Reduce the voltage regression value by placing the Current Limiting Reactor on the feeders fed from the same bar that feeds the sensitive load.
For subscribers of old factories causing voltage decline, the subscriber is obligated to put (Voltage Sag Compensator (V.S.C.) with the same capacity of loads on the common connection point, and in the event that the subscriber does not agree to this, a warning is given to disconnect the power supply and then disconnect.
New factories and their loads causing voltage decline A condition of purchase (Voltage Sag Compensator (V.S.C.) is placed when contracting with the South Cairo Electricity Distribution Company and placed at the common connection point and follow-up is done by Design Department of the company.
Subscribers who are affected by voltage decline as a result of the loads of other subscribers on the same loop are placed devices to measure the quality of electrical supply and note the amount and time period of voltage decline.