Method for providing control power using an energy store having variable deadband width when providing the control power
First Claim
1. A method for providing control power, the method comprising:
- providing the control power to discharge or charge an energy store for supplying energy to an electricity network or taking up energy from the electricity network respectively based on a frequency deviation from a desired frequency of the electricity network and a deadband around the desired frequency being prescribed, a charging state of the energy store being in one of (i) an upper charging state, (ii) a medium charging state, and (iii) a low charging state, amount of charge in the medium charging state being less than amount of charge in the upper charging state and the amount of charge in the medium charging state being more than amount of charge in the low charging state;
measuring the frequency deviation from the desired frequency with an accuracy greater than a width of the deadband; and
selecting a bandwidth within the deadband as a new deadband based on the charging state of the energy store to move the charging state toward the medium charging state.
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Abstract
A method providing control power for an electricity network in which at least one energy store supplies energy to the electricity network and/or takes up energy from the electricity network dependent on a frequency deviation from a desired frequency of the electricity network, a deadband being prescribed around the desired frequency. The frequency deviation from the network frequency is measured with greater accuracy than a width of the deadband and a bandwidth within the deadband is chosen dependent on a charging state of the energy store, with control power being provided outside the bandwidth. A device carrying out the method includes at least one energy store and a control system controlling control power of the energy store in an open-loop or closed-loop manner, the energy store being connected to an electricity network such that energy can be fed into the electricity network and can be removed from the electricity network.
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Citations
28 Claims
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1. A method for providing control power, the method comprising:
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providing the control power to discharge or charge an energy store for supplying energy to an electricity network or taking up energy from the electricity network respectively based on a frequency deviation from a desired frequency of the electricity network and a deadband around the desired frequency being prescribed, a charging state of the energy store being in one of (i) an upper charging state, (ii) a medium charging state, and (iii) a low charging state, amount of charge in the medium charging state being less than amount of charge in the upper charging state and the amount of charge in the medium charging state being more than amount of charge in the low charging state; measuring the frequency deviation from the desired frequency with an accuracy greater than a width of the deadband; and selecting a bandwidth within the deadband as a new deadband based on the charging state of the energy store to move the charging state toward the medium charging state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification