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Energy-saving power generation dispatching method considering security constraint and network loss modification

A technology of security constraints and scheduling methods, applied in the field of energy-saving power generation scheduling, can solve problems such as economic power allocation schemes not suitable for economic scheduling, optimal calculation, and inability to network loss

Inactive Publication Date: 2010-06-02
CHONGQING UNIV +1
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Problems solved by technology

Existing economic scheduling methods generally do not consider network loss, and usually use the imprecise B-coefficient method to calculate network loss, and cannot perform optimization calculations that take network loss into account
In addition, existing economic dispatch methods generally do not consider line security constraints, and the obtained economic power allocation schemes are generally not suitable for economic dispatch in actual operation

Method used

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  • Energy-saving power generation dispatching method considering security constraint and network loss modification
  • Energy-saving power generation dispatching method considering security constraint and network loss modification
  • Energy-saving power generation dispatching method considering security constraint and network loss modification

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Experimental program
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Embodiment 1

[0234] see image 3 , taking the IEEE 30-node system as an example to test the model established by the present invention. The 30-node system includes 5 generator units, 21 loads, and 41 transmission lines / transformers.

[0235] The consumption function of the generator is a quadratic curve, and the function expression is:

[0236] F 1 = a i P Gi 2 + b i P Gi + c i

[0237] The consumption parameter data is shown in Table 1, and the calculation results of the energy-saving power generation dispatching method before and after network loss correction are compared in Table 2 and Table 3.

[0238] Table 1 Generator consumption function of IEEE 30-node system

[0239] generator node.

a

b

c

1

0.00984

0.33500

0.00...

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Abstract

The invention belongs to the technical field of power system dispatching automation, and in particular relates to an energy-saving power generation method considering security constraint and network loss modification in the power system. The method comprises the following steps of: a, firstly, providing a mathematical model of the network loss modification and economic dispatch taking minimum total consumption of coal of the whole system as an objective function, wherein the mathematical model is min; b, converting the mathematical model of the energy-saving dispatch into the min, and then acquiring an optimized generation schedule; c, linearizing a constraint condition of the energy-saving dispatch; and d, solving the model of the energy-saving dispatch, and then adjusting the consumption of coal of a corresponding automatic generation control unit according to the solved result of the model. The method can obviously reduce the consumption of coal for power generation, and plays an important role in improving economic growth and benefits, reducing environmental pollution, and ensuring sustainable and rapid economic growth.

Description

technical field [0001] The invention belongs to the technical field of power system scheduling automation, and in particular relates to a new energy-saving power generation scheduling method in the power system that takes into account safety constraints and network loss correction. technical background [0002] Energy conservation and emission reduction is an important measure to alleviate the contradictions of energy supply and environmental constraints, and it is also an important way to improve economic growth and efficiency. The energy-saving work of power system dispatching mainly involves two aspects, that is, the reduction of coal consumption in thermal power plants and the reduction of losses in transmission networks. When implementing energy-saving power generation scheduling, the change of power generation plan of each unit must be accompanied by the change of network power flow distribution, and the change of power flow will cause the change of network loss. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/46G06F17/10
Inventor 熊小伏孙斌林成陈星田赵维兴秦志龙
Owner CHONGQING UNIV
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