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Method and device for calculating probabilistic energy flow of integrated energy system considering linkage faults

An integrated energy system and energy flow calculation technology, which is applied in the direction of calculation, AC network with the same frequency from different sources, circuit devices, etc., can solve the problem of not taking into account the failure of components, etc., and achieve the effect of fast calculation and prediction

Active Publication Date: 2022-07-05
TIANJIN UNIV
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Problems solved by technology

The research on the probabilistic energy flow of IES is currently mainly focused on the improvement of computing performance, without taking into account the common uncertainty factor of component failure

Method used

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  • Method and device for calculating probabilistic energy flow of integrated energy system considering linkage faults
  • Method and device for calculating probabilistic energy flow of integrated energy system considering linkage faults
  • Method and device for calculating probabilistic energy flow of integrated energy system considering linkage faults

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Embodiment Construction

[0048] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention are further described in detail below.

[0049] The operating characteristics of the regional power system can be represented by the AC power flow model of the power system, which is a nonlinear model. Assuming that there is a power network nodes, when the node voltage is expressed in polar coordinates, At this time, the balance equation of the node power can be written for each node in the system, as shown in the following formula:

[0050]

[0051] where: and Represents the injected active power and injected reactive power of node i; U i and U j is the voltage amplitude of node i and node j; θ ij is the voltage phase angle difference between nodes i and j, G ij and B ij are the real and imaginary parts of the elements in the ith row and jth column of the node admittance matrix, respectively.

[0052] Injected ac...

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Abstract

The invention discloses a probabilistic energy flow calculation method and device for an integrated energy system considering linkage faults. state; according to the characteristics of different types of cross-system faults and the fault identification matrix, use the iterative idea to search for the components that are affected by the cross-system fault and forcibly shut down, perform deterministic multi-energy power flow calculation according to the actual state of the integrated energy system, record the integrated The state of the output variables of the energy system and get the variance coefficient of each output variable; if all the variance coefficients are less than the given threshold, end the simulation process and output the final result; otherwise, it is necessary to continue to extract the actual state of the system for calculation; The phenomenon of large fluctuations in the operating state of the system proposes to strengthen the components and change the connection scheme of the coupling equipment. The apparatus includes: a processor and a memory.

Description

technical field [0001] The invention relates to the field of electric-heat-gas regional integrated energy systems, in particular to a method and device for calculating probabilistic energy flow of an integrated energy system that takes into account linkage faults. Background technique [0002] Under the dual pressure of the substantial increase in energy demand and the increasingly urgent environmental protection, many countries will pay attention to the main form of energy in the next 30 to 50 years - the integrated energy system, which can realize the integration between different energy supply and consumption systems. Organic coordination can improve the security, flexibility and reliability of energy supply in society [1] . However, the large-scale and diverse source and load access and the operation status of various coupling elements in the integrated energy system will bring a lot of uncertain factors to the IES (Integrated Energy System), which makes the traditional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/06G06Q10/06G06Q50/06
CPCH02J3/06G06Q10/06312G06Q50/06H02J2203/10H02J2203/20Y04S10/50
Inventor 侯恺李杭李强贾宏杰朱乐为
Owner TIANJIN UNIV
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