Abstract: A reserve optimization method and apparatus based on a support outage event constrained unit commitment. The method includes the following steps: step 1: running a basic unit commitment reserve optimization model to obtain a basic unit commitment dispatch result; step 2: establishing a committed capacity outage probability table (CCOPT) based on the dispatch result, calculating the loss of load probability (LOLP), and identifying the marginal events therefrom; and step 3: adding linear constraints corresponding to the marginal events to the reserve optimization model to obtain a new dispatch result, and returning to step 2 till the result meets the LOLP requirements. Multiple compromises in the problem are considered, and the LOLP constraint is simplified such that the model can be accurately and efficiently solved.

Abstract: A one-way load self-control spiral type brake, including a reel, two bearing frames on the reel, a brake shaft set between the two bearing frames, and two ends of the brake shaft connecting a transmission shaft. A front end of said brake shaft equipped with a fixing apparatus. Behind the fixing apparatus, a first inner friction piece, a first external friction piece, a second inner friction piece, a second external friction piece, an internal screw thread pressure plate, a tension spring, a connection piece and a brake shaft coupling are provided in sequential order around the brake shaft, and are fixed together by a socket and spigot joint. The inner friction piece and the brake shaft mesh. An external tooth is set on an outer circle of the external friction piece. A front end of the brake shaft coupling is fixed outside of an internal screw thread pressure plate.

Abstract: A one-way load self-control spiral type brake, including a reel, two bearing frames on the reel, a brake shaft set between the two bearing frames, and two ends of the brake shaft connecting a transmission shaft. A front end of said brake shaft equipped with a fixing apparatus. Behind the fixing apparatus, a first inner friction piece, a first external friction piece, a second inner friction piece, a second external friction piece, an internal screw thread pressure plate, a tension spring, a connection piece and a brake shaft coupling are provided in sequential order around the brake shaft, and are fixed together by a socket and spigot joint. The inner friction piece and the brake shaft mesh. An external tooth is set on an outer circle of the external friction piece. A front end of the brake shaft coupling is fixed outside of an internal screw thread pressure plate.