Opportunity-constrained coordination optimization method for electro-thermal interconnected integrated energy system

An integrated energy system, coordinated optimization technology, applied in system integration technology, design optimization/simulation, information technology support system, etc., can solve the problem that electric-heat interconnection integrated energy system is rarely involved

Inactive Publication Date: 2019-01-18
HOHAI UNIV
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  • Application Information

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Problems solved by technology

Chance-constrained optimization has been widely studied in power system network reconfiguration, economic dispatch, unit combinat

Method used

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  • Opportunity-constrained coordination optimization method for electro-thermal interconnected integrated energy system
  • Opportunity-constrained coordination optimization method for electro-thermal interconnected integrated energy system
  • Opportunity-constrained coordination optimization method for electro-thermal interconnected integrated energy system

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Embodiment Construction

[0088] This embodiment provides a chance-constrained coordination optimization method for an electric-thermal interconnected integrated energy system, such as figure 1 shown, including the following steps:

[0089] Step 1: Establish a comprehensive energy system model of electricity-heat interconnection, including: power system model, thermal system hydraulic model and thermal model, CHP unit model. Specifically include the following steps:

[0090] Step 101: The power system model is described by a classic AC power flow model, and the power expressions of its nodes are as follows:

[0091]

[0092] In the formula: P, Q are the active power and reactive power of the node; Y is the node admittance matrix; is the node voltage phasor.

[0093] Step 102: The hydraulic model of the heating network can be described by the flow continuity equation, the loop pressure head equation and the pressure head loss equation, namely:

[0094] A H m=m q (2)

[0095] B H h f =0 (3) ...

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Abstract

The invention discloses an opportunity-constrained coordination optimization method for electro-thermal interconnected integrated energy system. The method comprises the following steps of: firstly, based on the electricity-thermal interconnected integrated energy system model, taking into account the randomness and correlation of input variables, based on the primal-dual interior point method, the deterministic optimal energy flow is computed to obtain a set of optimal scheduling schemes, in which CLMCS (Correlation Latin Hypercube Sampling-Monte Carlo Simulation) method is adopted for solving probabilistic energy flow, Cornish-Fisher series fit the probability distribution of state variables. Finally, a heuristic algorithm is used to adjust the upper and lower bounds of the chance constraints, and a set of optimal scheduling schemes satisfying all the chance constraints is obtained by iterative computation. Analysis of examples verifies the effectiveness and practicability of the proposed method.

Description

technical field [0001] The invention relates to the field of operation scheduling of an integrated energy system, in particular to a chance-constrained coordination optimization method for an electric-thermal interconnected integrated energy system. Background technique [0002] With the increasingly prominent energy and environmental issues, how to improve energy utilization efficiency, discover new energy, realize large-scale development of renewable energy, and finally build a unified social comprehensive energy system has become an important strategic research direction in the international energy field. Integrated energy systems generally cover integrated energy systems such as power supply, gas supply, heating, cooling, hydrogen supply, and electrified transportation, as well as related communication and information infrastructure. With the popularization of heating networks, the widespread use of Combined Heat and Power (CHP) units, and the development of Power to Hea...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06Q10/06H02J3/00H02J3/38
CPCG06F30/20G06Q10/06312H02J3/00H02J3/381H02J3/383H02J2203/20Y02E10/56Y02E40/70Y04S10/50
Inventor 卫志农孙娟孙国强臧海祥陈胜
Owner HOHAI UNIV
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