HYDROELECTRIC

CHARCANI I

This Hydroelectric Power Station is the oldest and was built on 1905. It comprises two Francis turbines with horizontal axis, its volume of design is of 7,6 m³/s, with an installed power of 1,47 MW, at the moment is on stand by as the Mini Power Station of Charcani I is operating.

The net fall of this power station is 26,85 m and it is located at 2 527,17 m.a.s.l. It has two generators made by Siemens Schuckert Werk, with a nominal power of 1000 and 472 kW respectively, for a nominal tension of 5250 V. Both generators operate with a power factor of 0,8 and rotation speed of 600 rpm.

In addition, there are factories, lodges, a parish and a sports field.

CHARCANI II

This Power Station was built in 1912, has 3 groups of turbines J.M. VOITH, Francis type with horizontal axis of double discharge each one, its volume of total design is 6 m³, with an installed power of 0,79 MW. The net fall is 18,70 m.

This Power Station directly gets the water from the turbines discharge of the Hydro Power Station Charcani I and goes through a similar process to take the sand off similar to the previous power station.

CHARCANI III

This Hydro Power Station is from 1938. It comprises two double francis turbines of horizontal axis, one J.M. VOITH and the other ESCHER WYSS, their speed of rotation is 620 rpm.

The total design volume is 10 m³/s, with an installed power of 4,56 MW. The net fall of this power station is 57,50 m. In 1998, this station was upgraded with two asynchronous ABB generators, with nominal powers of 2 240 and 2 320 kW respectively for a nominal tension of 5250 V. The supervision is through the Control Center in Chilina.

The energy produced by the Power Stations Charcani I, II and III is transmitted to a 5.25 kV bar in Charcani I, then elevated to a 33 kV by a power transformer of 11,5 MVA, to be transmitted to the substation of Chilina, that is connected to the National Interconnected System.

CHARCANI IV

This Power Station was installed between 1959 and 1970. It has three groups of Francis turbines of horizontal axis made by CHARMILLES and has an installed power of 14 400 kW,
with a nominal volume of 15 m3/s. The net fall of this power station is 117,35 m.

In 1993 this power station was upgraded with three generators BBC, with a nominal power of 4800 kW each one, for a nominal tension of 5250 + 5% V, a power factor of 0,8 and a speed of 720 rpm.

Each generator is connected by a transformer elevated to a 33 kV bar, from which two lines of communication of 33 kV transport the energy produced, sending it to the bar connected to the SINAC in Chilina.

CHARCANI V

This Power station was installed in 1989 and it is one of most modern stations in EGASA’s Hydraulic System. It has three Pelton groups of turbines of vertical axis made by NEYRPIC and for each group has an installed power of 51290 kW.

The design volume of this power station is 24,9 m³/s and its net fall is 706,4 m.

It has three generators Alsthom Atlantic, type RYV 366,153 with a power of 57 000 KVA each one, for a nominal tension of 13 800 V which operate with a factor of 0,85 power. The energy is transferred to the substation Santuario that is connected to the SINAC.

CHARCANI VI

This hydroelectric power station was conditioned in 1976. It has a francis turbine of horizontal axis mark, its design volume is 15 m³/s, with an installed power of 8,96 MW. The net fall of this power station is 69 m.

The generator of this power station is made by BBC, with a nominal power of 8960 kW, for a nominal tension of 5250 V and operates with a power factor of 0,8 and speed of rotation of 514 rpm. The design frequency is 60 Hertz.

This power station was modernized in 1995, changing its speed governors to electronic systems. It’s connected to a bar of 33 kV from which a transmission line of 33 kV transports the produced energy, transferring it to the Chilina bar of 33 kV connected to the SINAC.