Energy storage energy scheduling method with feedbacks of micro-grid
A technology of energy scheduling and micro-grid, which is applied in the field of micro-grid and can solve problems such as energy scheduling that cannot be solved
Pending Publication Date: 2019-07-09
ZHANGJIAKOU POWER SUPPLY COMPANY OF STATE GRID JINBEI ELECTRIC POWER COMPANY +2
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[0005] In order to solve the above-mentioned problems that cannot be solved in energy scheduling, the present invention provides an energy storage energy scheduling method with feedback in a microgrid that is simple in transformer capacity expansion, low in cost, and fast charging does not cause short-term flickering of the grid
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0034] Such as figure 1 , an energy storage energy scheduling method with feedback under a microgrid, including a microgrid, including at least an electric vehicle and a charging station, and further comprising the following steps:
[0035] Step 1: The user measures the grid voltage of the electric vehicle charging station and sets the voltage;
[0036] Step 2: The microgrid sends the measurement data to the energy storage unit;
[0037] Step 3: Determine whether the voltage sag value exceeds the set value, if not, turn off the energy storage output, and return
[0038] Step 1, if it exceeds the set value, go to step 4;
[0039] Step 4: Calculate the error between the grid voltage and the set voltage;
[0040] Step 5: Calculate the error;
[0041] Step 6: Adjust the output voltage of the energy storage according to the calculation results, realize ...
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The invention discloses an energy storage energy scheduling method with feedbacks of a micro-grid. The micro-grid and at least an electric vehicle and a charging site are included. The method also includes following steps: step 1, a user measures a power grid voltage of the charging site of the electric vehicle and sets a voltage; step 2, the micro-grid transmits measurement data to an energy storage unit; step 3, whether a voltage sag value exceeds a set value is determined, energy storage output is closed and step 1 is returned if not, and step 4 is entered if yes; step 4, an error between the power grid voltage and the set voltage is calculated; step 5, the error is calculated; and step 6, the output voltage of energy storage is adjusted according to a calculation result to realize energy scheduling of energy storage and guarantee that the charging demand of the charging site does not cause sag of the power grid voltage. According to the provided energy storage energy scheduling method with the feedbacks of the micro-grid, the capacity expansion of a transformer is simple, the cost is low, and rapid charging does not cause short-time flickering of the power grid.
Description
technical field [0001] The invention relates to the technical field of micro-grids, in particular to an energy storage scheduling method with feedback under a micro-grid. Background technique [0002] At present, when the demand for fast charging of electric vehicles is becoming more and more urgent, in order to solve the problems of difficult expansion of transformers, high cost, short-term flickering of the power grid caused by fast charging, and uncertain charging locations of electric vehicles, energy storage cannot be solved everywhere. For the short-term energy demand of fast charging of electric vehicles, distributed energy storage must be used to solve the energy demand problem of regional fast charging of electric vehicles. Adjust the control to achieve the maximum utilization of energy. There are many types of power loads in the power grid, and the regional distribution is uneven. When the energy storage energy is dispatched, it must be lost by the nearby loads. I...
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IPC IPC(8): H02J3/28H02J3/12
CPCH02J3/28H02J3/12B60L53/00
Inventor 郝晓晓严琦龙张新瑞段丽荣罗飞齐炜李素娟
Owner ZHANGJIAKOU POWER SUPPLY COMPANY OF STATE GRID JINBEI ELECTRIC POWER COMPANY