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Multi-scene robust scheduling method and device for electric power system containing wind power
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A power system, multi-scenario technology, applied in system integration technology, information technology support systems, instruments, etc., can solve problems such as poor economy, lack of coordination and optimization of unit output and backup
Pending Publication Date: 2021-07-13
STATE GRID XINJIANG ELECTRIC POWER CO ECONOMIC TECH RES INST
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Problems solved by technology
In order to track the change of wind power output in the power system, the operating points of some conventional units need to be adjusted twice according to the reserved reserve capacity during the daily dispatch process. However, the current research generally uses the unit reserve as a constraint for economic dispatch, and lacks the control of unit output and capacity. The coordination and optimization of standby, the economical efficiency after unit output adjustment is not good
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Embodiment 1
[0062] refer to figure 1 , an embodiment of the present invention provides a multi-scenario robust scheduling method for a wind power system, including:
[0063] Obtain the robust standby dispatch mode and robust economic dispatch mode of the power system;
[0064] Based on the robust standby dispatch mode and the robust economic dispatch mode, a robust dispatch model is established;
[0065] Based on the robust scheduling model, perform multi-scenario robust scheduling;
[0066] Among them, based on the robust standby dispatch mode and the robust economic dispatch mode, a robust dispatch model is established, including:
[0067] The first stage: optimize the start and stop of the unit under the robust standby dispatch mode;
[0068] The second stage: Based on the optimization results of the first stage, under the forecast scenario set, the optimal solution of the robust economic dispatch mode is obtained;
[0069] Based on the optimal solution, a rod scheduling model is est...
Embodiment 2
[0115] refer to Figure 4 , an embodiment of the present invention provides a multi-scenario robust scheduling device including a wind power system, including:
[0116] A dispatching mode acquisition module, configured to acquire a robust backup dispatching mode and a robust economic dispatching mode of the power system;
[0117] A dispatching model acquisition module, used to establish a robust dispatching model based on the robust standby dispatching mode and the robust economic dispatching mode;
[0118] Scheduling output module, used for multi-scenario robust scheduling based on the robust scheduling model;
[0119]Among them, based on the robust standby dispatch mode and the robust economic dispatch mode, a robust dispatch model is established, including:
[0120] The first stage: optimize the start and stop of the unit under the robust standby dispatch mode;
[0121] The second stage: Based on the optimization results of the first stage, under the forecast scenario se...
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Abstract
The invention provides a multi-scene robust scheduling method and device for a wind power-containing electric powersystem. The method comprises the following steps: acquiring a robust standby scheduling mode and a robust economic scheduling mode of the electric powersystem; establishing a robust scheduling model based on the robust standby scheduling mode and the robust economic scheduling mode; in a first stage, optimizing unit start and stop in a robust standby scheduling mode; in a second stage, based on the optimization result in the first stage, obtaining the optimal solution of the robust economic dispatching mode under the prediction scene set; establishing a rod scheduling model based on the optimal solution; and performing multi-scene robust scheduling based on the robust scheduling model. Based on the robust standby scheduling mode and the robust economic scheduling mode, the scheduling method comprehensively reflecting the two scheduling modes is established, preparation can be made in advance for a possible wind power scene in the aspect of unit start-stop arrangement, the pressure of peak regulation through emergency start-stop is relieved to a certain extent, and through the robust economic scheduling mode, the economical efficiency of system operation is considered.
Description
technical field [0001] The invention relates to a robust dispatching technology of a power system, in particular to a multi-scenario robust dispatching method and device for a power system including wind power. Background technique [0002] Regions rich in wind resources in my country generally have the characteristics of high concentration, large scale, and far away from the load center. When a high proportion of renewable energy is connected to the grid, the randomness and volatility of wind power aggravate the uncertainty of system dispatching and operation. In order to track the change of wind power output in the power system, the operating points of some conventional units need to be adjusted twice according to the reserved reserve capacity during the daily dispatch process. However, the current research generally uses the unit reserve as a constraint for economic dispatch, and lacks the control of unit output and capacity. The coordination and optimization of backup, ...
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