New energy uncertainty power system security risk prevention and control method and device

A preventive control and power system technology, applied in the direction of power network operating system integration, circuit devices, information technology support systems, etc., can solve the problem of high control costs, difficulty in determining the risk threshold for safe and stable operation of the system, and long solution times for stochastic optimization methods And other issues

Active Publication Date: 2021-07-06
STATE GRID NINGXIA ELECTRIC POWER +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Purpose: In order to overcome the problems in the prior art that the control cost of the robust optimization method is too large, the solution time of the stochastic optimization method is too long and

Method used

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  • New energy uncertainty power system security risk prevention and control method and device
  • New energy uncertainty power system security risk prevention and control method and device
  • New energy uncertainty power system security risk prevention and control method and device

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Embodiment Construction

[0074] The present invention will be further described below in conjunction with the specific embodiments.

[0075] Such as figure 1 As shown, a new energy uncertainty power system security risk prevention control method includes the following steps:

[0076] 1) Get future T s The conventional unit power generation plan, load prediction data, new energy plant power generation power prediction data, and N-energy generated n-to-new energy power generation power uncertain variables s The new energy plant station is in force scenario, based on the above data, the future T s Period of N s Safety and stable risks of the scenario;

[0077] 2) In the future T s Period of N s Safety and Stable Scene Mode Mode Performing All Ideal Faults in Function Fault Faults in Function Faults, and the total amount of resection unit and total amount of cutting load after the expected fault; the total amount of the cutting unit and the total amount of cut load are greater than allowed The maximum resecti...

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Abstract

The invention discloses a new energy uncertainty power system security risk prevention and control method and device, and the method comprises the steps: carrying out the enumeration combination of schemes between corresponding control schemes, deleting the combinations which do not meet a certainty constraint condition, and forming all possible control schemes; sequencing all possible control schemes according to the order of target function calculation values from small to large, and carrying out safety and stability evaluation calculation of all anticipated faults in an anticipated fault set on each control scheme in a scene operation mode with safety and stability risks in sequence, so that the total load amount and the total unit amount which are removed after the faults occur are obtained; and judging whether opportunity constraint conditions in the safety and stability risk prevention and control model are met or not, and if yes, outputting the control scheme as a final control scheme. The control cost for adjusting the output of the thermal power generating unit and the power abandoning risk for limiting the output of the new energy cluster are considered; the practical requirements of prevention and control are met; and on-line safety and stability risk prevention and control calculation speed and accuracy requirements are met.

Description

Technical field [0001] The present invention relates to a new energy uncertainty power system security risk prevention control method and device belongs to the technical field of electricity system automation. Background technique [0002] With the rapid development of new energy installed capacity, new energy and network scale has gradually increased, and new energy effort uncertainty giving power system security and stability analysis and decision-making. It is difficult to scientifically respond to the impact of uncertainty on system safety and economic operation. The risk theory can effectively measure uncertainty factors on the overall impact of the system to ensure that the system is within the acceptable risk level. [0003] For the treatment of new energy discharge uncertainty, it is usually used to confirm the inter-setting interval method or scene method: confidence inter-block method determines the uncertain amount of upper and lower boundaries based on certain confide...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06H02J3/00H02J3/46H02J3/14
CPCG06Q10/04G06Q10/0635G06Q10/06375G06Q50/06H02J3/001H02J3/466H02J3/144H02J2300/20Y04S20/222Y02B70/3225
Inventor 孙小湘鲍颜红马军徐泰山王运张金龙蒙飞杨君军李宏强夏小琴徐伟
Owner STATE GRID NINGXIA ELECTRIC POWER
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