Power grid safety optimization dispatching method considering demand response

A technology for demand response and optimal scheduling, applied in computing, electrical components, circuit devices, etc., can solve problems such as the rising proportion of non-fossil energy power generation, insufficient peak-shaving capacity of the power system, and affecting the safe and stable operation of the power system

Active Publication Date: 2017-05-24
SOUTHEAST UNIV
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Problems solved by technology

At the same time, in order to promote the transformation of energy structure and achieve energy conservation and emission reduction, the proportion of non-fossil energy power

Method used

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  • Power grid safety optimization dispatching method considering demand response
  • Power grid safety optimization dispatching method considering demand response
  • Power grid safety optimization dispatching method considering demand response

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Embodiment Construction

[0081] The present invention will be further described below in conjunction with the drawings and specific embodiments.

[0082] Such as figure 1 As shown, the power grid security optimization dispatch method that takes into account the demand response includes the following steps:

[0083] Step S1: Establish a dynamic incentive compensation mechanism, and model the user's demand response behavior according to the user's load reduction and transfer characteristics.

[0084] The dynamic incentive compensation mechanism is designed as follows. During the period when the system has the highest load, the grid company will give the highest incentive compensation. Let the highest incentive compensation given by the grid company be A * Yuan / MWh, define the ratio of the load to the maximum value of each period as the demand proportional coefficient, and set the demand proportional coefficient as Γ t ,which is:

[0085]

[0086] In formula (1), Refers to the power demand in t period before th...

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Abstract

The invention discloses a power grid safety optimization dispatching method considering demand response. The method comprises the following steps: establishing a dynamic excitation compensation mechanism, and carrying out modeling on demand response behaviors of a user according to load shedding and transfer features; establishing a calculation model of power grid reliability index loss-of-load probability and expected energy not supplied; converting a reliability index into an economic index and integrating the index into an objective function, and establishing a day-ahead economic dispatch model with the total operation cost minimum being as an objective; establishing constraint conditions to enable an electric power system to meet system constraints, unit constraints and security constraints; and carrying out solving through calculation software to obtain an optimal day-ahead economic dispatch result. The demand response and reliability index are integrated into day-ahead dispatching of the electric power system, and the optimal dispatching model considering dynamic excitation compensation and expected power failure loss is established, thereby coordinately solving the problem of unit commitment of a generation power side and the problem of supply-demand interaction of a demand side and realizing economy and security of operation of a power grid.

Description

Technical field [0001] The invention belongs to the technical field of power system dispatching, and in particular relates to a grid safety optimization dispatching method that takes into account demand response. Background technique [0002] With the gradual adjustment of the national economic structure, the electricity consumption of the whole society continues to rise, the peak value of electricity consumption is constantly being refreshed, and the peak-to-valley difference of the power grid is gradually expanding. At the same time, in order to promote the transformation of the energy structure and achieve energy conservation and emission reduction, the proportion of non-fossil energy power generation has increased rapidly, which has made the power system's peak-shaving capacity significantly insufficient and seriously affected the safe and stable operation of the power system. As the next generation power network, smart grid strengthens the two-way interaction between users a...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06Q50/06
CPCG06Q50/06H02J3/00H02J2203/20Y02E40/70Y04S10/50
Inventor 徐青山丁一帆吉用丽
Owner SOUTHEAST UNIV
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