A Calculation Method of Maximum Transmission Capacity of AC-DC System Containing VSC-HVDC

A technology for power transmission capacity calculation and AC/DC system, which is applied in the direction of AC network circuit, calculation, power transmission and AC network, etc. It can solve the problems of difficult power transmission capacity calculation, complex system model and control method, etc., and achieve the effect of reducing the scale of the problem.

Active Publication Date: 2018-12-18
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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Problems solved by technology

Especially with the development of high-voltage direct current transmission technology, the system model and control method become more complex, and the calculation of the corresponding transmission capacity becomes more difficult

Method used

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  • A Calculation Method of Maximum Transmission Capacity of AC-DC System Containing VSC-HVDC
  • A Calculation Method of Maximum Transmission Capacity of AC-DC System Containing VSC-HVDC
  • A Calculation Method of Maximum Transmission Capacity of AC-DC System Containing VSC-HVDC

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Embodiment Construction

[0039] The present invention proposes a method for calculating the maximum power transmission capacity of a VSC-HVDC AC / DC system. The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0040] Such as figure 1 As shown, the calculation method for the maximum power transmission capacity of the VSC-HVDC AC and DC system in this embodiment includes the following steps:

[0041] Step A: Provide a calculation model for the maximum transmission capacity of the AC-DC system including VSC-HVDC based on the multi-state optimal power flow.

[0042] Specifically, the proposed basic model for TTC calculation of AC and DC systems with VSC-HVDC based on multi-state optimal power flow is as follows:

[0043]

[0044]

[0045]

[0046] s∈Ξ (4)

[0047] In the formula: F represents the calculation function of the system power transmission capacity; Ξ represents the system operation state set, including the system norm...

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Abstract

The invention discloses an AC-DC system containing VSC-HVDC total transfer capability calculation method, and belongs to the field of electric power system dispatching automation, and the method comprises an AC-DC system containing VSC-HVDC total transfer capability calculation model based on multimode optimal power flow; an AC-DC system containing VSC-HVDC N-1 method is provided; N-1 fault screening is performed, and a COUENNE nonlinear mixed integer optimized model solver is used to solve the total transfer capability calculation model. According to the invention, VSC-HVDC control constraint after N-1 security constraint and fault is fully considered, problems of AC-DC system containing VSC-HVDC total transfer capability calculation and VSC-HVDC optimal parameter setting can be effectively solved, and the method has a good engineering application prospect.

Description

technical field [0001] The invention belongs to the field of power system scheduling automation. In particular, it relates to a method for calculating the maximum power transmission capacity of an AC-DC system including a VSC-HVDC (voltage source converter-based high voltage direct current transmission system). Background technique [0002] With the expansion of the grid scale and the increase of electricity demand, the transmission capacity of the interconnected system has attracted more and more attention. Especially with the development of HVDC technology, the system model and control methods have become more complex, and the calculation of the corresponding transmission capacity has become more difficult. The maximum transmission capacity (TTC) refers to the maximum power that can be transmitted by the transmission section of the system or the interconnected transmission network under the premise of satisfying the safe and reliable operation of the system. Similar to m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/36H02J3/06H02J3/00G06F17/50
CPCG06F30/367H02J3/00H02J3/06H02J3/36H02J2203/20Y02E60/60
Inventor 陈艳波韩通韩子娇张凯马进于普瑶
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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