An Optimal Scheduling Method for Power Grid Security Considering Demand Response

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

Active Publication Date: 2019-04-30
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 generation has risen rapidly, which makes the power system's peak-shaving capacity obviously insufficient, seriously affecting the safe and stable operation of the power system

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  • An Optimal Scheduling Method for Power Grid Security Considering Demand Response
  • An Optimal Scheduling Method for Power Grid Security Considering Demand Response
  • An Optimal Scheduling Method for Power Grid Security Considering Demand Response

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Embodiment Construction

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

[0082] like figure 1 As shown, the optimal scheduling method for power grid security considering demand response includes the following steps:

[0083] In step S1, a dynamic incentive compensation mechanism is established, and the user's demand response behavior is modeled 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 power grid enterprise will give the highest incentive compensation. Let the power grid enterprise give the highest incentive compensation as A * Yuan / MWh, define the ratio of the load to the maximum load in each period as the demand proportional coefficient, and set the demand proportional coefficient to Γ t ,which is:

[0085]

[0086] In formula (1), Refers to 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 electric power system dispatching, and in particular relates to a power grid security optimization dispatching method considering demand response. Background technique [0002] With the gradual adjustment of the national economic structure, the power consumption of the whole society continues to rise, the peak value of power consumption is constantly refreshed, and the peak-to-valley difference of the power grid shows a trend of gradually expanding. 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 generation has risen rapidly, which makes the peak regulation capacity of the power system obviously insufficient, seriously affecting the safe and stable operation of the power system. As a next-generation power network, the smart grid strengthens the two-way interaction between users an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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