Multi-Power Joint Peak-Shaving Optimization for Power System Considering Coordinated Dispatching of Nuclear Power and Wind Power

In view of the development trend of nuclear power and offshore wind power in China's coastal areas, as well as the current situation of peak shaving pressure brought by reverse peak shaving of wind power to the power grid. In this paper, according to the number of failures and power loss per year in each region, the risk of peak load regulation is calculated comprehensively and quantitatively, and the risk cost increment of nuclear power peak shaving is calculated and evaluated. Optimize and linearize the constraints, and the relatively complete constraint conditions are established. Thus, the traditional peak shaving model of fixed gear nuclear power dispatch is improved，and the peak shaving depth is continuous within the safety regulation range of nuclear power. Then，based on the peak shaving operation model of nuclear power safety constraints, considering the nuclear power risk and wind power consumption, taking into account the operation cost, risk cost, environmental cost and safe operation constraints of various types of power supply, a multi-source optimal scheduling model of wind-nuclear-thermal-storage-gas is established. Based on the calculation example of the actual regional power grid, the security, low carbon and economy of the model are analyzed, and the sensitivity analysis of the risk cost coefficient and wind power reserve coefficient in the dispatching model is carried out. It can be concluded that the nuclear power has a little safety impact on the reactor core and coolant circulation system after participating in the peak shaving operation, and the increase in the probability of man-made misoperation is not obvious. The main source of the risk cost increase is the benefit loss of selling electricity, so that it can properly participate in the peak shaving of the system. When the nuclear safety risk is low and the risk of wind abandonment is high, the nuclear power peak shaving has a stronger economic advantage. The dynamic optimal allocation of wind power reserve capacity can further reduce the abandonment of nuclear power and improve the operation economy of the system. INDEX TERMS economic dispatch, linear adjustment, nuclear power peak shaving, nuclear safety risk, security constraint, wind power consumption.

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Two-Stage Robust Optimization for Large Logistics Parks to Participate in Grid Peak Shaving

Zhou,

Zhang,

Qiu

et al. 2024

Symmetry

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As new energy integration increases, power grid load curves become steeper. Large logistics parks, with their substantial cooling load, show great peak shaving potential. Leveraging this load while maintaining staff comfort, product quality, and operational costs is a major challenge. This paper proposes a two-stage robust optimization method for large logistics parks to participate in grid peak shaving. First, a Cooling Load’s Economic Contribution (CLEC) index is introduced, integrating the Predicted Mean Vote (PMV) and Sales Pressure Index (SPI). Then, an optimization model is established, accounting for renewable energy uncertainties and maximizing large logistics parks’ participation in peak shaving. Results illustrate that the proposed method leads to a reduction in the peak shaving pressure on the distribution network. Specifically, under the scenario tolerating the maximum potential uncertainty in renewable energy output, the absolute peak-to-valley difference and fluctuation variance of the park’s net load are decreased by 45.82% and 54.59%, respectively. Furthermore, the PMV and the SPI indexes are reduced by 39.12% and 26.36%, respectively. In comparison with the determined optimization method, despite a slight cost increase of 20.06%, the proposed method significantly reduces EDR load shedding by 98.1%.

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Multi-Power Joint Peak-Shaving Optimization for Power System Considering Coordinated Dispatching of Nuclear Power and Wind Power

Cited by 3 publications

References 36 publications

Multi-power sources joint optimal scheduling model considering nuclear power peak regulation

Multi-power sources joint optimal scheduling model considering nuclear power peak regulation

A Multi-Source Coordinated Optimal Operation Model Considering the Risk of Nuclear Power Peak Shaving and Wind Power Consumption

Two-Stage Robust Optimization for Large Logistics Parks to Participate in Grid Peak Shaving

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