4 results about "Reserve capacity" patented technology

The invention discloses a user side hydroelectric resource collaborative optimization scheduling method, and the key point is to improve the operation benefit and risk management capability of a hydropower station group. By constructing a user side hydropower monthly output optimization model, according to a monthly electric quantity contract and a reserve plan, the method dynamically adjusts an operation plan and distributes reserve capacity in combination with the actual water inflow condition of the current month. The model introduces a joint opportunity constraint of shared storage capacity, the joint opportunity constraint is converted into a single-dimensional opportunity constraint according to a risk allocation principle, and the reliability of a scheduling strategy is enhanced. By evaluating the water level deviation degree, reasonable distribution of the reserve capacity is ensured, and stable operation of the power grid is supported. Furthermore, in consideration of the water level control and standby response capability of each hydropower station, the configuration strategy of the standby capacity is optimized, and the overall economic benefit and the utilization efficiency of clean energy are remarkably improved. The method provides an innovative solution for scheduling of small and medium-sized hydropower stations.

An apparatus and process for distributing coolant through first and second coolant loops comprising a pump having a first outlet port connected to the first coolant loop and a second outlet port connected to the second coolant loop. A valve switches coolant to the first or second outlet port individually or to the first and second outlet ports concurrently. Coolant pumped by the pump at an unrestricted rate of flow is circulated at a rate of flow less than the unrestricted rate of flow when the valve connects the first outlet port and circulated at a rate of flow less than the unrestricted rate of flow when the valve connects the second outlet port. When the valve connects the first and the second outlet ports concurrently coolant is circulated through the first and the second coolant loops at a rate of flow equal to the unrestricted rate of flow.

This invention belongs to the field of power systems and relates to a day-ahead gas generator scheduling optimization method for power systems. The method includes the following steps: S10, constructing a function with the objective of maximizing the system's minimum reserve capacity, minimizing economic costs, and reducing carbon emissions; S20, constructing natural gas supply constraints for day-ahead gas generators; S30, constructing power balance constraints between power generation and consumption in the power system, as well as stability limit constraints to ensure system operation; S40, constructing start-up and shutdown constraints, ramp-up and ramp-down constraints, and upper and lower output limit constraints for gas generators and coal-fired generators; S50, based on the objective function and constraints constructed in the above steps, constructing a day-ahead gas generator scheduling optimization model and solving it through mixed-integer linear programming to obtain the optimal day-ahead gas generator scheduling scheme. This invention can optimize the time distribution of reserve capacity, has good engineering applicability, and significantly improves the decision-making efficiency and scientific rigor of day-ahead scheduling plans.