Second-order cone programming robust state estimation method and system for electric heating comprehensive energy system

A technology of integrated energy system and second-order cone planning, applied in the fields of resources, computing, electrical digital data processing, etc., can solve problems such as low energy utilization efficiency

Pending Publication Date: 2020-07-10
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

[0002] In traditional energy systems (electricity systems, natural gas systems, thermal systems, etc.), they are planned, designed and operated independently, resulting in inefficient overall energy use

Method used

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  • Second-order cone programming robust state estimation method and system for electric heating comprehensive energy system
  • Second-order cone programming robust state estimation method and system for electric heating comprehensive energy system
  • Second-order cone programming robust state estimation method and system for electric heating comprehensive energy system

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Embodiment 1

[0080] The present invention provides a second-order cone programming tolerance state estimation method for an electrothermal integrated energy system, the schematic diagram is as follows figure 1 As shown, it includes: obtaining the quantity measurement of the electrothermal integrated energy system; inputting the quantity measurement into the pre-built second-order cone programming state estimation model of the electrothermal integrated energy system, and obtaining the estimated value of the voltage amplitude of the power system node, the phase angle of the power system node Estimated values, nodal pressure estimates for thermal systems, nodal heating temperature estimates, and nodal recuperation temperature estimates.

[0081] S1 obtains the quantity measurement of the electrothermal integrated energy system.

[0082] S2 Input the quantity measurement into the pre-built second-order cone programming state estimation model of the electrothermal integrated energy system, and ...

Embodiment 2

[0201] The invention proposes an SOCP-based IEHS robust state estimation method by introducing auxiliary variables and intermediate variables. By adding auxiliary variables in IEHS and reselecting measured values, a set of linearized measuring equations is obtained. Then, based on WLAV, it is transformed into a linear program. Due to the second-order cone constraint relationship in the auxiliary variables, a SOCP model was finally established. A test example of a regional combined heat and power system in the Bali area shows that the method has good estimation accuracy and tolerance.

[0202] A combined heat-power system in the Bali area was used for the case study. The grid consists of 9 nodes and 8 branches. The heat network includes 32 nodes and 32 branches. A total of three CHP generators are used as coupling components: a gas turbine, an extraction turbine, and a reciprocating engine. A detailed description of the topology and parameters of the case study is given in...

Embodiment 3

[0263] Based on the same idea, the present invention also provides a second-order cone programming robust state estimation system for an electrothermal integrated energy system, such as figure 2 shown, including:

[0264] The data acquisition module is used to obtain the quantity measurement of the electrothermal comprehensive energy system;

[0265] The state estimation module is used to input the quantity measurement into the pre-built second-order cone programming state estimation model of the electrothermal integrated energy system to obtain the estimated value of the voltage amplitude of the power system node, the estimated value of the phase angle of the power system node, and the estimated value of the node pressure of the thermal system value, estimated value of nodal heating temperature and estimated value of nodal reheating temperature;

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Abstract

The invention provides a second-order cone programming robust state estimation method for an electric heating comprehensive energy system. The method comprises the steps of: obtaining quantity measurement of the electric heating comprehensive energy system; inputting the quantity measurement into a pre-constructed electric heating comprehensive energy system second-order cone programming state estimation model to obtain a power system node voltage amplitude estimation value, a power system node phase angle estimation value, a thermodynamic system node pressure estimation value, a node heat supply temperature estimation value and a node regenerative temperature estimation value, wherein the measurement of the electric heating comprehensive energy system comprises the measurement of an electric power system and the measurement of a thermodynamic system. The application of the method makes up the loss of measurement redundancy in a power grid, and improves the accuracy of the state estimation of the electric power system in the electric heating comprehensive energy system.

Description

technical field [0001] The invention belongs to the field of comprehensive energy state evaluation, and in particular relates to a second-order cone programming tolerance state estimation method and system for an electrothermal comprehensive energy system. Background technique [0002] In traditional energy systems (electricity systems, natural gas systems, thermal systems, etc.), they are planned, designed and operated independently, resulting in low overall energy utilization efficiency. Therefore, integrated energy systems (IES) are considered to be the main form of energy for human society in the future. As an important energy conversion component, CHP (combined heat and power, combined heat and power refers to the use of fossil fuels, residual energy, renewable energy, electric energy and other ways to simultaneously generate electrical energy and available heat) has become an important factor in the research of IES. become more and more important. Compared with stand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06Q10/06G06Q50/06G06F119/14G06F119/08
CPCG06Q10/0639G06Q50/06
Inventor 杨晓楠郎燕生陈艳波姚远朱承治刘晔
Owner CHINA ELECTRIC POWER RES INST
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