Online Simulation Calculation Method for Predicted Operation of Offshore Oilfield Group Power Grid

Abstract

The invention relates to an online simulating calculation method for expected operation of an offshore oilfield cluster power grid. The online simulating calculation method comprises the following steps: generating pseudo-measurement data of the offshore oilfield cluster power grid; carrying out topology analysis on the oilfield cluster power grid based on the pseudo-measurement data, and converting the pseudo-measurement data into IEEE tidal stream data files; amending the steady-state model of the offshore oilfield cluster power grid according to operators of the offshore oilfield cluster power grid and the control characteristics of the power grid; carrying out tidal stream calculation on the amended steady-state model; according to the results of the tidal stream calculation, combining the idle control and voltage control of the offshore oilfield cluster power grid, if the node type and node injection power of the node where an engine is located need to be changed, carrying out tidal stream calculation again after the corresponding node type and node injection power are changed and a balance node is searched again; converting the results of the tidal stream calculation into corresponding equipment information. The calculation method can help the operators to grasp the influence of the expected operation on the power grid in advance, and the method is beneficial to stable operation of the offshore oilfield cluster power grid and guarantee of the safety and continuity of oil field production.

Description

technical field [0001] The invention belongs to the field of power system control. Specifically, the invention relates to an online simulation calculation of an offshore oilfield power grid. Background technique [0002] Due to the depletion of onshore oil and gas resources, it is an inevitable trend for oilfield services to develop offshore, especially deep sea. With the expansion of the exploitation scale of offshore oil and gas fields, the power supply mode of offshore oil and gas fields has gradually transitioned from the traditional individual power supply of each platform power station to the joint power supply of each platform power station, that is, on the basis of the original platform (power station), each platform (power station) power station) through the interconnection of submarine cables to form an offshore oilfield group power grid integrating generation, transmission, distribution and utilization, which not only reduces operating costs, but also improves th...

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Problems solved by technology

[0005] The transient simulation method based on the differential algebraic model (such as the method used by the dispatcher simulation training system in the energy management system of the land power grid) considers the accurate mathematical model and dynamic characteristics of the generator, load and other components, and the relay protection device The action process of the system is also included, so the dynamic process of the system can be accurately simulated to ensure the validity of the results, but this method is too complicated, considering the dynamic models of gas turbine generators and a large number of pump loads used in the offshore oil field group power grid And the lack of parameters, the lack of parameters also leads to the accuracy of the transient simulation method can not be guaranteed; and sometimes the operator needs to conduct online quasi-real-time simulation of the operation to check whether the operation is feasible, which requires high simulation speed, the transient simulation method The calculation time is long, which obviously cannot meet the operator's requirements for simulation speed

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