Optimization Scheduling of Hydro–Wind–Solar Multi-Energy Complementary Systems Based on an Improved Enterprise Development Algorithm
Abstract
:1. Introduction
2. Generation of Typical Wind and Solar Scenarios
2.1. Calculation of Wind and Solar Power Output
- (1)
- Wind power output calculation [27]
- (2)
- Solar Power Output Calculation
2.2. Scenario Generation and Reduction
3. Short-Term Optimal Scheduling Model for Hydropower–Wind–Solar Complementarity
3.1. Objective Function
3.2. Constraints
- (1)
- Water Balance Constraints
- (2)
- Water Level Constraints
- (3)
- Output Constraints
- (4)
- Generation Flow Constraints
- (5)
- Water Level Fluctuation Constraints
- (6)
- Boundary Constraints
4. Model Solution Based on the TGED Algorithm
4.1. Improvement Strategy
- (1)
- Chaos Initialization
- (2)
- Gaussian Walk
4.2. TGED Algorithm
4.2.1. Population Initialization
4.2.2. Gaussian Walk Optimization
4.2.3. Update Mechanism
- (1)
- Task Update
- (2)
- Structure Update
- (3)
- Technology Update
- (4)
- Personnel Update
4.2.4. Update Switching Mechanism
4.3. Model Solving Process
Algorithm 1: TGED for Solving the Hydro-Wind-Solar Multi-Energy Complementary Optimization Scheduling Problem. |
Input: Inflow runoff sequence for the scheduling period, wind–solar output scenarios, boundary conditions for scheduling operation, and various operational constraints. Initialization: Generate the initial population based on Tent mapping and calculate the fitness values of each particle. Main Program: while (iter <= iteration) Perform Gaussian random walk optimization Calculate c(t) value for i = 0 to popSize = 0.1) Task update: For the worst fitness individual, regenerate based on Tent mapping else switch c(t) case c(t) = 1 Structure update case c(t) = 2 Technology update case c(t) = 3 Personnel update end of switch end of if end of for Update iteration count: iter++ if iter = iteration end Output: Optimal solution and corresponding water level, outflow, and output processes. |
4.4. Function Testing and Analysis
5. Case Study
5.1. Engineering Background
5.2. Analysis of Typical Days
6. Conclusions and Summary
- (1)
- Effectiveness of the Improved Algorithm: This paper improves the Enterprise Development Optimization (ED) algorithm by combining chaotic initialization and Gaussian random walk with the standard algorithm. A new ED algorithm is proposed that enhances the solving accuracy and reduces the likelihood of falling into local optima. Preliminary validation through ten test functions shows that the TGED algorithm achieves high accuracy, faster convergence, and better optimization capabilities compared to other algorithms.
- (2)
- Peak-Shaving Performance Improvement: The TGED algorithm has optimized grid load peak-shaving across multiple typical day scenarios, demonstrating excellent optimization performance. Its adaptive update mechanism can rapidly respond to fluctuations in load and output, further smoothing the residual load process. Compared with the standard DE, SFS, PSO, and ED algorithms, the TGED algorithm exhibits superior peak-shaving results, further confirming its applicability in complex multi-energy scheduling environments.
- (3)
- Advantages of Hydro–Wind–Solar Complementarity: In multi-energy complementary operation, hydro–wind–solar complementarity uses the flexible regulation capability of hydropower to effectively suppress the fluctuations of wind and solar output, achieving a more stable grid load output, which facilitates efficient consumption of renewable energy. Typical day analysis shows that the hydro–wind–solar complementary optimization scheduling model based on TGED can effectively reduce the system’s load peak–valley difference under various meteorological conditions.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
Abbreviations
TGED | Tent–Gaussian Enterprise Development Optimization |
ED | Enterprise Development Optimization |
DE | Differential Evolution |
SFS | Stochastic Fractal Search |
PSO | Linear dichroism |
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No. | Type | Test Function | Value Range | Optimal Value | ||||
---|---|---|---|---|---|---|---|---|
TGED | ED | DE | SFS | PSO | ||||
1 | Multimodal | [−5.12,5.12] | 22.561 | 27.829 | 57.790 | 24.682 | 25.095 | |
2 | Multimodal | [−6,6] | 0.088 | 0.209 | 0.353 | 0.180 | 0.229 | |
3 | Multimodal | [−32.768,32.768] | 0.666 | 2.612 | 1.359 | 1.124 | 1.560 | |
4 | Unimodal | [−5,5] | 9.376 | 10.127 | 43.587 | 32.298 | 36.535 | |
5 | Multimodal | [−5,10] | 0.555 | 3.533 | 2.203 | 3.742 | 2.157 | |
6 | Unimodal | [−10,10] | 0.050 | 0.583 | 1.109 | 1.235 | 1.884 | |
7 | Unimodal | [−5,5] | 0.001 | 0.035 | 0.265 | 1.453 | 0.623 | |
8 | Multimodal | [0,π] | −6.512 | −5.246 | −4.775 | −4.418 | −4.263 | |
9 | Multimodal | [−10,10] | 0 | 0.039 | 0.169 | 0.823 | 0.272 | |
10 | Multimodal | [−10,10] | 0.246 | 1.126 | 3.411 | 1.348 | 1.797 |
Typical Day | Typical Day 1 (5 February 2022) | Typical Day 2 (4 August 2021) | Typical Day 3 (19 October 2021) | Typical Day 4 (10 May 2022) |
---|---|---|---|---|
Initial Water Level (m) | 791.489 | 772.029 | 812.076 | 780.676 |
Final Water Level (m) | 791.802 | 772.196 | 812.127 | 781.322 |
Average Inflow Rate (m3/s) | 2229.450 | 4175.667 | 4392.786 | 3279.863 |
Upper Water Level Limit (m) | 794.489 | 775.029 | 815.076 | 783.676 |
Lower Water Level Limit (m) | 789.489 | 770.029 | 810.076 | 778.676 |
Peak-Shaving Scheme | Algorithm | Typical Day 1 (5 February 2022) | Typical Day 2 (4 August 2021) | Typical Day 3 (19 October 2021) | Typical Day 4 (10 May 2022) |
---|---|---|---|---|---|
Hydro Peak-Shaving (MW) | DE | 20,305.056 | 41,933.288 | 18,253.657 | 20,312.989 |
SFS | 20,348.814 | 41,933.281 | 18,253.659 | 20,211.558 | |
PSO | 20,218.028 | 41,933.288 | 18,253.657 | 20,125.865 | |
ED | 20,166.453 | 41,933.273 | 18,253.657 | 20,137.728 | |
TGED | 20,054.825 | 41,933.273 | 18,253.657 | 20,010.942 | |
Hydro–Wind–Solar Peak-Shaving (MW) | DE | 18,986.451 | 39,591.004 | 15,434.336 | 18,787.417 |
SFS | 19,214.943 | 39,591.004 | 15,434.332 | 18,730.139 | |
PSO | 18,537.146 | 39,591.004 | 15,434.332 | 18,887.543 | |
ED | 18,639.182 | 39,591.004 | 15,434.335 | 18,237.425 | |
TGED | 18,353.094 | 39,591.004 | 15,434.332 | 18,153.789 |
Peak-Shaving Scheme | Algorithm | Typical Day 1 (5 February 2022) | Typical Day 2 (4 August 2021) | Typical Day 3 (19 October 2021) | Typical Day 4 (10 May 2022) |
---|---|---|---|---|---|
Hydro Peak-Shaving (MW) | DE | 7586.221 | 14,296.914 | 6270.719 | 7296.032 |
SFS | 7621.973 | 14,298.937 | 6166.487 | 7264.329 | |
PSO | 7594.924 | 14,297.350 | 6543.328 | 7268.999 | |
ED | 7790.163 | 14,486.555 | 6709.961 | 7353.426 | |
TGED | 7581.350 | 14,413.551 | 6286.271 | 7262.861 | |
Hydro–Wind–Solar Peak-Shaving (MW) | DE | 6872.589 | 14,062.395 | 5410.825 | 6644.506 |
SFS | 6911.993 | 13,506.207 | 5131.845 | 6648.868 | |
PSO | 6839.797 | 13,556.159 | 5806.627 | 6759.444 | |
ED | 7086.412 | 13,506.064 | 5835.296 | 6770.382 | |
TGED | 6853.253 | 13,505.933 | 5218.572 | 6794.697 |
Peak-Shaving Scheme | Runtime (min) | ||||
---|---|---|---|---|---|
TGED | ED | DE | SFS | PSO | |
Hydro Peak-Shaving | 0.023 | 0.016 | 0.026 | 0.028 | 0.027 |
Hydro–Wind–Solar Peak-Shaving | 12.330 | 11.541 | 12.898 | 13.302 | 12.248 |
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Zhao, G.; Yu, C.; Huang, H.; Yu, Y.; Zou, L.; Mo, L. Optimization Scheduling of Hydro–Wind–Solar Multi-Energy Complementary Systems Based on an Improved Enterprise Development Algorithm. Sustainability 2025, 17, 2691. https://doi.org/10.3390/su17062691
Zhao G, Yu C, Huang H, Yu Y, Zou L, Mo L. Optimization Scheduling of Hydro–Wind–Solar Multi-Energy Complementary Systems Based on an Improved Enterprise Development Algorithm. Sustainability. 2025; 17(6):2691. https://doi.org/10.3390/su17062691
Chicago/Turabian StyleZhao, Guohan, Chuanyang Yu, Haodong Huang, Yi Yu, Linfeng Zou, and Li Mo. 2025. "Optimization Scheduling of Hydro–Wind–Solar Multi-Energy Complementary Systems Based on an Improved Enterprise Development Algorithm" Sustainability 17, no. 6: 2691. https://doi.org/10.3390/su17062691
APA StyleZhao, G., Yu, C., Huang, H., Yu, Y., Zou, L., & Mo, L. (2025). Optimization Scheduling of Hydro–Wind–Solar Multi-Energy Complementary Systems Based on an Improved Enterprise Development Algorithm. Sustainability, 17(6), 2691. https://doi.org/10.3390/su17062691