Transient characteristic evaluation method of oil refining and chemical plant power supply system
A technology of power supply system and transient characteristics, applied in the direction of electrical digital data processing, design optimization/simulation, special data processing applications, etc., can solve problems such as casualties, losses, leakage, etc., to ensure safe and stable operation and reduce load loss Effect
Inactive Publication Date: 2016-12-07
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
In the event of power failure, voltage fluctuation, voltage mutation, etc., the production equipment will cause a large area of unplanned shutdown of the production equipment, and it will easily lead to fire, explosion, leakage, equipment damage, casualties, environmental pollution and other major secondary accidents, resulting in heavy losses
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[0046] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0047] Evaluation method of transient characteristics of power supply system of refinery and chemical plant based on PSD-BPA (such as figure 1 shown), including the following steps:
[0048] Step 1: Build the power supply system model and parameters
[0049] The power supply system model is composed of generators, lines, transformers and other primary equipment and their control system models, load models (mainly motors), and secondary equipment models such as fast switching, relay protection, and standby automatic switching. , including the internal data of the enterprise grid and the external data of the interconnected grid.
[0050] The parameters of the primary equipment model and load model of the power supply system should be obtained through equipment ledger information, modeling research, factory parameters or measured parameters. Gen...
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The invention discloses a transient characteristic evaluation method based on an oil refining and chemical plant power supply system, and belongs to the technical field of petrochemical engineering electrical security. The method mainly comprises six steps: constructing a power supply system model and parameter, operation mode setting, failure setting, transient characteristic simulation computation analysis, transient stable operation judgment, and stability control measure proposing. The method can be infiltrated to the various aspects of power supply system planning, designing, operation and management to quantitatively evaluate the transient characteristic and load-loss risk of the voltage, power angle and frequency of the power supply system under the failure disturbance of an internal / external power grid, check whether the constant value and the coordination of the relay protection and stability control device are proper, and judge whether the conditions of the hazard process or electromotor tripping occur; the control measure for improving the system under the abnormal work condition is put forward, the safe and stable operation of the device power supply device is guaranteed, and the load loss in the disturbance is lowered.
Description
technical field [0001] The invention belongs to the technical field of petrochemical electrical safety, and in particular relates to a transient characteristic evaluation method for a power supply system of an oil refining and chemical plant. Background technique [0002] The production equipment of large-scale petrochemical enterprises has the characteristics of high temperature, high pressure, flammability, explosion, poisoning, and strong correlation. The power supply system must meet the requirements of safe, stable, long-term, full-load, and high-quality operation of the production equipment. After years of investment and continuous expansion and transformation of petrochemical enterprises, large-scale, economical and modern production units such as 10 million tons / year oil refining and 1 million tons / year ethylene have been built and put into operation, and the power supply to the devices is safe and stable. Sexual demands are getting higher and higher. In the event o...
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IPC IPC(8): G06F17/50
CPCG06F30/20Y02E60/00
Inventor 胡海燕王世强肖睿刘全桢杨琦刘宝全张婷婷刘英杰
Owner CHINA PETROLEUM & CHEM CORP