Short-Term Optimal Operation of Baluchaung II Hydropower Plant in Myanmar

The short-term optimal operation model discussed in this paper uses the 2016 to 2018 daily and monthly data of Baluchaung II hydropower station to optimize power generation by minimizing water consumption effectively in order to get more revenue from optimal operation. In the first stage, run-off-river type Baluchaung II hydropower station data was applied in a mathematical model of equal micro-increment rate method for optimal hydropower generation flow distribution unit results. In the second stage, dynamic programming was used to get optimal hydropower generation unit distribution results. The resultant data indicated that optimized results can effectively guide the actual operation run of this power station. The purpose of the optimal load dispatching unit was to consider the optimal power of each unit for financial profit and numerical programming on the actual data of Baluchaung II hydropower plant to confirm that our methods are able to find good optimal solutions which satisfy the objective values of 17.75% in flow distribution units and 24.16% in load distribution units.

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Formulation and Implementation of Short-Term Optimal Reservoir Operation Schemes Integrated with Operation Rules

Water ◽

10.3390/w11050944 ◽

2019 ◽

Vol 11 (5) ◽

pp. 944 ◽

Cited By ~ 1

Author(s):

Yanke Zhang ◽

Jiajie Wu ◽

Hongjie Yu ◽

Changming Ji

Keyword(s):

Evaluation Method ◽

Optimal Operation ◽

Operating Conditions ◽

Control Mode ◽

Theoretical Research ◽

Short Term ◽

Post Evaluation ◽

Operation Rules ◽

Actual Operation ◽

Hydropower Stations

To narrow the gap between theoretical research and practical application of short-term optimal reservoir power generation operation under uncertain conditions, a comprehensive study is conducted on the formulation, evaluation, and implementation of operation schemes throughout the entire procedure of optimal operation. Firstly, the three implementation modes of the optimal operation scheme are assessed with the post-evaluation method. After the optimal implementation mode is determined, the formulation and implementation of optimal operation schemes are improved by combining the advantages of conventional and optimal operation and using the concept of warning water level in operation rules. Finally, the Xiaoxuan Reservoir is taken as an example for simulation calculation under different operating conditions. The results show that the operation model integrated with operation rules has both the security of conventional operation and the profitability of optimal operation. The accordingly-formulated optimal operation schemes, when implemented with the output control mode, can provide valuable guidance for the actual operation of hydropower stations.

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Consideration of streamflow forecast uncertainty in the development of short-term hydropower station optimal operation schemes: A novel approach based on mean-variance theory

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.126929 ◽

2021 ◽

pp. 126929

Author(s):

Yuan Liu ◽

Chang-ming Ji ◽

Yi Wang ◽

Yanke Zhang ◽

Xiaoning Hou ◽

...

Keyword(s):

Optimal Operation ◽

Hydropower Station ◽

Short Term ◽

Forecast Uncertainty ◽

Streamflow Forecast ◽

Novel Approach ◽

Mean Variance

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An improved prediction method of water consumption rate considering aftereffects for short-term dispatching of hydropower station

E3S Web of Conferences ◽

10.1051/e3sconf/202019900008 ◽

2020 ◽

Vol 199 ◽

pp. 00008

Author(s):

Xiao Chen ◽

Jianzhong Zhou ◽

Benjun Jia ◽

Yuqi Yang ◽

Li Li

Keyword(s):

Water Consumption ◽

Consumption Rate ◽

Prediction Method ◽

Hydropower Station ◽

Short Term ◽

Absolute Deviation ◽

Generation Scheduling ◽

Operation Process ◽

Actual Operation ◽

Scheduling Models

Accurate and rapid output calculation of hydropower station (HS) is an important research item in reservoir dispatching neighborhood. There have existed many methods to calculate output in generation scheduling models with different time scale. But for the large HS with multiple units, it is still difficult to calculate output quickly and accurately in short-term generation dispatching. Therefore, in this paper, an improved method of water consumption rate (IWCR) considering aftereffects is proposed. The Three Gorges Hydropower Station (TGHS) in China is selected as the case study, and the prediction water consumption rate (WCR) results are obtained with IWCR and classical water consumption rate method (CWCR). The results show that 1) The mean absolute deviation (MAD) on the left and right bank of TGHS is significantly superior to the MAD calculated by CWCR, and reduce 0.578 m3/(s.wkw) and 0.569 m3/(s.wkw) respectively. 2) In low relative deviation interval, there are more prediction WCR periods with IWCR. Therefore, the IWCR method can lead to the plan scheme more consistent with actual operation process, and the security of TGHS and Gezhouba is stronger.

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Short-Term Load Dispatching Method for a Diversion Hydropower Plant with Multiple Turbines in One Tunnel Using a Two-Stage Model

Energies ◽

10.3390/en12081476 ◽

2019 ◽

Vol 12 (8) ◽

pp. 1476 ◽

Cited By ~ 4

Author(s):

Shengli Liao ◽

Hongye Zhao ◽

Gang Li ◽

Benxi Liu

Keyword(s):

Load Distribution ◽

Optimal Algorithm ◽

Hydropower Plant ◽

Distribution Model ◽

Stage Model ◽

Short Term ◽

Two Stage ◽

Decomposition Approach ◽

Optimal Load ◽

Load Dispatching

Short-term load dispatching (STLD) for a hydropower plant with multiple turbines in one tunnel (HPMTT) refers to determining when to startup or shutdown the units of different tunnels and scheduling the online units of each tunnel to obtain optimal load dispatch while simultaneously meeting the hydraulic and electric system constraints. Modeling and solving the STLD for a HPMTT is extremely difficult due to mutual interference between units and complications of the hydraulic head calculation. Considering the complexity of the hydraulic connections between multiple power units in one tunnel, a two-phase decomposition approach for subproblems of unit-commit (UC) and optimal load dispatch (OLD) is described and a two-stage model (TSM) is adopted in this paper. In the first stage, an on/off model for the units considering duration constraints is established, and the on/off status of the units and tunnels is determined using a heuristic searching method and a progressive optimal algorithm. In the second stage, a load distribution model is established and solved using dynamic programming for optimal load distribution under the premise of the on/off status of the tunnel and units in the first stage. The proposed method is verified using the load distribution problem for the Tianshengqiao-II reservoir (TSQII) in dry season under different typical load rates. The results meet the practical operation requirements and demonstrate the practicability of the proposed method.

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Three Gorges Cascade Hydropower System Joint Simulative Optimal Operation Research in Power Market

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.347-353.1370 ◽

2011 ◽

Vol 347-353 ◽

pp. 1370-1373

Author(s):

Jiao Zheng ◽

Kan Yang ◽

Ran Zhou ◽

Yong Huai Hao ◽

Guo Shuai Liu

Keyword(s):

Power Market ◽

Optimal Operation ◽

Adaptive Genetic Algorithm ◽

Three Gorges ◽

Short Term ◽

Roulette Wheel Selection ◽

Generation Scheduling ◽

Hydropower System ◽

Selection Operator ◽

Hydropower Stations

The short-term joint optimal operation simulation of Three Gorges cascade hydropower system aiming at maximum power generation benefit is proposed. And a new method for optimizing cascade hydropower station based on Adaptive Genetic Algorithm (AGA) with trigonometric selective operators is presented. In this paper, the practical optimal operation in power market is described. The temporal-spatial variation of flow between cascade hydropower stations is considered, and time of use (TOU) power price is also taken into account. Moreover, a contrast between Tangent-roulette selection operator and traditional one is made. To a certain degree, the results of simulative optimal operation based on several representative hydrographs show that Tangent-roulette wheel selection operator can find a more excellent solution, because the Tangent-roulette one can overcome the fitness requirements of non-negative. The research achievements also have an important reference for the compilation of daily generation scheduling of Three Gorges cascade hydropower system in the environment of power market.

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