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Three-dimensional scanning method for electrical complex torque coefficient based on PSCAD (Power System Computer Aided Design)

A complex torque coefficient, three-dimensional scanning technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problem of not considering the influence of series compensation, and achieve the effect of low cost and high speed

Inactive Publication Date: 2014-09-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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Problems solved by technology

However, the existing time-domain simulation methods for calculating the electrical complex torque coefficient generally only consider the relationship between the electrical complex torque coefficient and the scanning frequency, but do not consider the influence of the series compensation degree on the electrical complex torque coefficient

Method used

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  • Three-dimensional scanning method for electrical complex torque coefficient based on PSCAD (Power System Computer Aided Design)
  • Three-dimensional scanning method for electrical complex torque coefficient based on PSCAD (Power System Computer Aided Design)
  • Three-dimensional scanning method for electrical complex torque coefficient based on PSCAD (Power System Computer Aided Design)

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Embodiment Construction

[0031] The method proposed by the present invention will be further described below in conjunction with the drawings and embodiments.

[0032] like figure 1 Shown is the flow chart of the three-dimensional scanning method for electrical complex torque coefficients proposed by the present invention; the specific steps of the method are:

[0033] 1) Load the electrical complex torque coefficient three-dimensional scanning module on the electromagnetic transient software;

[0034] The three-dimensional scanning module of electrical complex torque coefficient includes: parameter input area, algorithm realization area, and result monitoring area. The result monitoring area monitors the scanned values ​​of electrical elastic coefficient and electrical damping coefficient in real time to determine whether they are valid; the module communicates with external The system data is exchanged, and the encapsulation of the parameter input area, the algorithm implementation area, and the re...

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Abstract

The invention belongs to the field of power system simulation, and in particular relates to a three-dimensional scanning method for an electrical complex torque coefficient based on PSCAD (Power System Computer Aided Design).The method comprises the following steps: loading a three-dimensional scanning module of the electrical complex torque coefficient on electromagnetic transient software, calculating a series compensation capacitance value according to a series compensation degree, and then generating a disturbance and applying to a rotor mechanical torque; when a system once again enters into a steady state, extracting a generator electromagnetic torque signal and a rotor angular velocity response variable, and calculating the electrical complex torque coefficient; judging whether a scanning frequency exceeds a cut-off frequency or not, if not, increasing a frequency scanning step length, if yes, stopping calculation; judging whether a scanning compensation degree exceeds a cut-off compensation degree or not, if not, increasing a compensation degree scanning step length, if yes, completing three-dimensional scanning. According to the three-dimensional scanning method disclosed by the invention, the frequency and the compensation degree are continuously scanned to obtain a three-dimensional curve of the frequency, the compensation degree and the complex torque coefficient, the simulation method is fast, the cost is low, and the three-dimensional scanning method is not affected by multiple FACTS (Flexible Ac Transmission System) devices in the system.

Description

technical field [0001] The invention belongs to the field of power system simulation, in particular to a three-dimensional scanning method for electrical complex torque coefficients based on PSCAD. Background technique [0002] With the continuous expansion of the power system, the operation of ultra-high voltage, long-distance transmission lines and large-capacity generator sets, as well as measures such as line series capacitance compensation and direct current transmission to improve the stability and transmission capacity of the power system, in addition to the accompanying In addition to the huge economic benefits, it also brings new problems to the safe and stable operation of the power system, one of which is the subsynchronous oscillation of the power system. [0003] The complex torque coefficient method is a method for quantitatively analyzing subsynchronous oscillation problems in power systems. The method uses two complex torque coefficients K E (λ) and K M (λ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 蒋维勇郭春林陈菡杨琳许建庭李亚男陈钦磊
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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