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Hydroelectric generation plan optimization method

A technology of power generation planning and optimization methods, which is applied in calculation, instrumentation, data processing applications, etc., can solve problems such as large operating deviations, and achieve the effect of practical calculation results

Inactive Publication Date: 2017-08-04
GUIZHOU WUJIANG HYDROPOWER DEV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem of the large deviation between the existing power generation plan and the actual operation, the present invention proposes a hydroelectric power generation plan optimization method that considers the influence of the optimal working condition on the operation of the unit, which specifically includes the following steps:

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Embodiment 1

[0025] In order to solve the problem that the existing power optimization method does not consider the optimal operation output of the unit in the current state, resulting in insufficient utilization of hydropower resources and equipment damage, this embodiment provides a method for optimizing hydropower generation plans, such as figure 1 shown, including the following steps:

[0026] S110 draws the unit output-upstream water level-water consumption rate / efficiency characteristic curve through the actual operation data of the power plant unit. Specifically, draw the unit output-water head-water consumption rate / efficiency characteristic curve based on the actual operating data of the power plant unit, and calculate the unit output-upstream water level-water consumption rate / efficiency characteristic curve according to the relationship between the water head and the upstream water level, where the water head and the upstream water level The relation of water level is H 上 =H 尾...

Embodiment 2

[0031] This embodiment of the present invention provides a power generation plan optimization method considering the optimal output of the unit. The steps of the method are as follows:

[0032] Step 1: By collecting the actual operating data of the power plant unit, draw the unit output-water head-water consumption rate / efficiency (N-H-μ / η) characteristic curve, and convert the water head H into the upstream water level H 上 , forming unit output-upstream water level-water consumption rate / efficiency (N-H 上 -μ / η) characteristic curve. where H 上 Calculated as follows:

[0033] h 上 =H 尾 +H (1)

[0034] Where: H 尾 : Tail water level.

[0035] Step 2: Consider the vibration area of ​​the unit and the maximum output of the unit, and draw N-H according to step 1 上 -μ / η characteristic curve, solve the optimal operating output value of the unit at each upstream water level, and draw N 最优 -H 上 characteristic curve.

[0036] Step 3: Introduce the optimal operating output const...

Embodiment 3

[0043] see figure 2 , the steps of the power generation plan optimization method considering the optimal output of the unit in this embodiment are as follows:

[0044] Step 1: By collecting the actual operating data of the power plant unit, draw the unit output-water head-water consumption rate / efficiency (N-H-μ / η) characteristic curve, and convert the water head H into the upstream water level H 上 , forming unit output-upstream water level-water consumption rate / efficiency (N-H 上 -μ / η) characteristic curve. where H 上 Calculated as follows:

[0045] h 上 =H 尾 +H (2)

[0046] Where: H 尾 : Tailwater level, take 1 / 3 times of the rated generating flow of the power station (equal to the sum of the rated generating flow of all units) corresponding to the water level value in the tailwater level curve.

[0047] Taking a reservoir in Southwest China as an example, the unit output-water head-water consumption characteristic curve drawn according to the actual operation data is ...

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Abstract

The invention relates to a hydroelectric generation plan optimization method considering the influence of the optimal condition on the operation of a unit. The method specifically includes following steps: drawing a unit output-upstream water level-water consumption rate / efficiency characteristic curve according to practical operation data of a power station unit; calculating an optimal operation output value of the unit in each upstream water level by considering a unit vibration region and the maximum output of the unit according to the unit output-upstream water level-water consumption rate / efficiency characteristic curve, and drawing an optimal operation output-upstream water level characteristic curve; and introducing a hydroelectric unit optimal operation output constraint, constructing a 96-point generating plan making model considering the optimal output of the unit by regarding the minimum water consumption as the target, and calculating the making model to obtain a 96 generating plan. According to the method, the generating plan is made by considering the optimal output of the unit in the current state so that the made generating plan is in more accordance with the practical condition.

Description

technical field [0001] The invention relates to the technical field of power system scheduling automation, in particular to a method for optimizing a hydroelectric power generation plan. Background technique [0002] When the reservoir needs to generate electricity at its maximum capacity and increase water flow, the dispatcher has less consideration for the operating economy of the unit; and when the reservoir has no maximum water flow requirement, the dispatcher requires the unit to operate under the optimal working condition as much as possible. In order to reduce the water consumption rate of power generation, improve the utilization rate of water energy, and realize the purpose of energy saving and efficiency enhancement of the reservoir. 96-point power generation planning is an important task in the dispatching operation of power systems, which refers to arranging power generation plans with the minimum energy consumption within a certain dispatching period (usually on...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06315G06Q50/02Y02E40/70Y04S10/50
Inventor 彭鹏李成俊高英顾文钰王磊肖燕于洁王静杨明山雷芳
Owner GUIZHOU WUJIANG HYDROPOWER DEV