ARRANGEMENT COMPRISING A VOLTAGE DISTRIBUTION LINE AND CONSUMERS

Abstract

An arrangement includes an energy generator and an energy consumer. A voltage distribution line runs from the energy generator to the energy consumer. A transformer substation at a predefined location includes a line voltage regulator, which simultaneously controls the voltage of the voltage distribution line at the location of the transformer substation and supplies the electricity consumer with an appropriate voltage. The line voltage regulator regulates voltage levels in a space- and cost-saving manner, especially without building up a new transformer substation.

Claims

1. Arrangement, comprising: an energy generator, a voltage distribution line that runs from the energy generator to an energy consumer, and a transformer substation at a predefined location, wherein the transformer substation comprises a line voltage regulator, which simultaneously controls the voltage of the voltage distribution line at said predefined location of the transformer substation and also supplies at least one electricity consumer with an appropriate voltage.

2. Arrangement according to claim 1, wherein at least one energy source or at least one renewable energy source is arranged, wherein the energy source or renewable energy source adds additional voltage to the voltage distribution line.

3. Arrangement according to claim 1, wherein the electricity consumer receives low voltage, wherein low voltage is in the range of 50 V to 300 V.

4. Arrangement according to claim 1, wherein the line voltage regulator controls medium voltage in the voltage distribution line, wherein medium voltage is in the range of 50 V to 36 kV.

5. Arrangement according to claim 1, wherein the line voltage regulator comprises a booster transformer and a feeder transformer, wherein the booster transformer adds an additional voltage to the voltage distribution line depending of a drop of voltage in the voltage distribution line and wherein the feeder transformer is electrically connected with the booster transformer via a tap changer and/or an electrical circuit.

6. Arrangement according to claim 5, wherein the booster transformer comprises a first coil winding and a second coil winding, wherein the first coil winding induces the additional voltage in the second coil winding and/or wherein the second coil winding is connected in series with the voltage distribution line a connector.

7. Arrangement according to claim 6, wherein the first coil winding of the feeder transformer is electrically connected with the voltage distribution line and induces a voltage in the second coil winding of the feeder transformer, wherein the second coil winding of the feeder transformer is electrically connected with the first coil winding of the booster transformer via a tap changer and/or an electrical circuit.

8. Arrangement according to claim 5, wherein the electricity consumer is supplied by the feeder transformer with voltage.

9. Arrangement according to claim 2, wherein the renewable energy source comprises a generator using wind energy and/or a generator using solar energy.

10. Arrangement according to claim 1, wherein the transformer substation is retrofitted by the line voltage regulator.

11. Power grid, comprising at least one arrangement according to claim 1 and/or several transformer substations arranged in series along the voltage distribution line.

Description

[0020] In the drawing:

[0021] FIG. 1 schematically shows a line voltage regulator comprising a booster transformer and a feeder transformer, which is installed as a retrofit part in an already existing transformer substation.

[0022] FIG. 1 shows an arrangement, comprising an energy generator 1, at least one energy consumer 2 and at least one renewable energy source 3, wherein a voltage distribution line 4 runs or extends from the energy generator 1 to the energy consumer 2. The renewable energy source 3 may feed or add additional voltage to the voltage distribution line 4. The energy generator 1 is developed as a conventional power plant and the energy consumer 2 is developed as a plant, bigger facility or a bigger institution, needing lots of power.

[0023] The transformer substation 5 at a predefined location 13 comprises a line voltage regulator 6, which simultaneously controls the voltage of the voltage distribution line 4 at said location 13 of the transformer substation 5 and also simultaneously supplies at least one electricity consumer 7, namely at least one house or apartment house, with an appropriate voltage.

[0024] The electricity consumer 7 receives a low voltage, namely a voltage of 110 V, 220 V or 380 V. The low voltage is alternating voltage (A.C voltage).

[0025] The line voltage regulator 6 controls medium voltage in the voltage distribution line 4, wherein medium voltage is in the range of 50 V to 36 kV. The medium voltage is alternating voltage (A.C voltage).

[0026] The line voltage regulator 6 comprises a booster transformer 8 and a feeder transformer 9. The booster transformer 8 adds an additional voltage to the voltage distribution line 4 depending of a drop of voltage in the voltage distribution line 4. The feeder transformer 9 is electrically connected with the booster transformer 8 via a tap changer 10.

[0027] The booster transformer 8 comprises a first coil winding 8a and a second coil winding 8b, wherein the first coil winding 8a induces the additional voltage in the second coil winding 8b. The second coil winding 8b is connected in series with the voltage distribution line 4 using connector means 14, 15.

[0028] The first coil winding 9a of the feeder transformer 9 is electrically connected with the voltage distribution line 4 and induces a voltage in the second coil winding 9b of the feeder transformer 9. The second coil winding 9b of the feeder transformer 9 is electrically connected with the first coil winding 8a of the booster transformer 8 via the tap changer 10 and/or a circuit.

[0029] The tappings of the feeder transformer 9 are connected to the tap changer 10, which is an on load tap changer, to regulate the voltage level in the voltage distribution line 4. One extra tapping at e.g. 400 V is connected to a line voltage terminal. This tapping and the transformer winding, where it is connected, are designed to transfer the needed line voltage power, which is e.g. 400 kVA or 630 KVA.

[0030] The tap changer 10 works fully automatic to regulate the voltage level in the voltage distribution line 4.

[0031] The electricity consumer 7 is supplied by the feeder transformer 9 with voltage. The second coil winding 9b of the feeder transformer 9 supplies the electricity consumer 7 with low voltage.

[0032] The renewable energy source 3 comprises a generator using wind energy 11 and/or a generator using solar energy 12.

[0033] The transformer substation 5 is retrofitted by a conventional line voltage regulator 6.

[0034] A power grid, comprises at least one arrangement as described above and several transformer substations 5 are arranged in series along the voltage distribution line 4.

REFERENCE NUMBERS

[0035]

TABLE-US-00001 1 Energy generator 2 Energy consumer 3 Renewable energy source 4 Voltage distribution line 5 Transformer substation 6 Line voltage regulator 7 Electricity consumer 8 Booster transformer  8a First coil winding of 8  8b Second coil winding of 8 9 Feeder transformer  9a First coil winding of 9  9b Second coil winding of 8 10  Tap changer 11  Generator using wind energy 12  Generator using solar energy 13  Predefined location of 5 14  Connection means 15  Connection means