Method and system for optimizing power transmission plan and pumped storage power generation plan
A technology for power generation planning and pumped energy storage, applied in circuit devices, AC network circuits, and AC network load balancing, etc., can solve problems such as anti-peak regulation, frequency security threats to the main network of China Southern Power Grid, frequent adjustment of units and disorderly adjustment, etc. Achieve the effect of improving operating economy, avoiding anti-peak regulation, and ensuring frequency safety
Active Publication Date: 2021-07-13
CHINA SOUTHERN POWER GRID COMPANY
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Problems solved by technology
[0005] In actual operation, if the power generation plans of Xidian and pumped storage power plants cannot well match the load characteristics of Guangdong power grid, they will not be able to make full use of the rapid adjustment capabilities of pumped storage units, which will easily cause frequent adjustments and failures of units in Guangdong Province Disorderly adjustment, anti-peaking phenomenon occurs, and even poses a threat to the frequency security of the main network of China Southern Power Grid
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[0042] The present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments of the description. For the step numbers in the embodiment of the present invention, it is only set for the convenience of explanation and description, and there is no limitation on the order of the steps. The execution order of each step in the embodiment can be carried out according to the understanding of those skilled in the art Adaptive adjustment.
[0043] refer to figure 1 , a method for optimizing power transmission plan and pumped storage power generation plan, comprising the following steps:
[0044] The optimization goal is to minimize the adjustment degree of the receiving end unit, and a hybrid optimization model of the power generation plan of the sending end and the power generation plan of the pumped storage power plant is established considering the peak shaving demand of the receiving end;
[0045] Determining the...
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The invention discloses a method and system for optimizing a power transmission plan and a pumped-water storage power generation plan. The method includes: minimizing the adjustment degree of a generating set at a power receiving end as an optimization goal, and establishing a power generation at a power transmitting end that considers peak regulation requirements at a power receiving end The hybrid optimization model of planning and pumped storage power plant generation plan; determine the constraints of the established hybrid optimization model; solve the established hybrid optimization model according to the determined constraints, and obtain the optimal transmission end power generation plan and pumped storage Power generation plan optimization scheme. The invention optimizes the power generation plan of the transmission end and the power generation plan of the pumped storage power plant through the established hybrid optimization model, so that the power transmission end and the pumped storage power plant can participate in the peak regulation of the power receiving end to a greater extent, and reduce the cost of the power receiving end unit. Adjusting the degree to the minimum value improves the operating economy of the unit and ensures the frequency security of the power grid during the period of rapid load changes. The invention can be widely used in the field of power system scheduling optimization.
Description
technical field [0001] The invention relates to the field of power system scheduling optimization, in particular to a method and system for optimizing power transmission plan and pumped storage power generation plan. Background technique [0002] Due to the uneven distribution of energy and loads, long-distance, large-capacity, and ultra-high-voltage power transmission has become the development trend of my country's power grids. Regional power grids such as the Southern Power Grid, Central China Power Grid, and East China Power Grid have formed large-scale AC-DC interconnected grids (i.e. AC-DC asynchronous networking) pattern. Reasonable cross-regional power grid dispatching plan is of great significance to the complementary role of regional power resources and loads. [0003] Taking China Southern Power Grid as an example, the load curve of Guangdong Power Grid presents a typical characteristic of three peaks and three valleys in summer, and a typical characteristic of tw...
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IPC IPC(8): H02J3/46H02J3/28
CPCH02J3/28H02J3/46H02J2203/20
Inventor 单政博陈亦平候方迪何剑军张勇侯君辛阔方必武杜旭李慧勇陈静鹏郑晓东杨荣照
Owner CHINA SOUTHERN POWER GRID COMPANY