41 results about "Type scheme" patented technology

The invention discloses a method for screening types of arresters in a flexible direct-current power transmission converter station. The screening method comprises the following steps of: step 1, determining a fault situation of over-voltage of a pre-installing point of each arrester when the arresters are not installed; step 2, determining an arrester model suitable for electromagnetic transient simulation; step 3, after installing the arresters, determining the over-voltage inhibition effect, the stress of the arresters and the number of parallel arrester columns in a fault condition; step 4, determining scores of comprehensive performances of arrester type schemes; and step 5, comparing the scores of the comprehensive performances of the arresters of all alternative types provided by arrester manufacturers, and determining an optimal type scheme. According to the method, the over-voltage inhibition effect and the price cost of the arresters are taken into account, the economic cost and the protective effect of the arresters are considered, and the comprehensive performance of each arrester is reasonably evaluated, so that the optimal type scheme of the arresters is determined; and the method has actual engineering significance and can be widely applied to the technical field of power transmission and distribution of power systems.

The invention provides an opposite-control type safety socket. The safety socket comprises a shell, a linkage contact device, socket contacts and wire-inlet contacts, the linkage contact device comprises power slide blocks, springs and a power baffle, each socket contact comprises a base body portion and a pin portion, and each power slide block comprises a triggering portion, a tail rod, and a limiting portion. The power slide block is located at the inner side of the socket contact close to the pin portion of the socket contact in a non-usage state; the power slide block realizes reciprocating motion in the limiting condition through the effect of the tail rod and the limiting portion and the spring and the power baffle, and the pin portion of the socket contact extends to the moving direction of the power slide block in the other socket contact and is located at the side of the wire-inlet contacts or located at an extending line of the wire-inlet contacts; when a foreign matter is inserted into a jack or the power slide block is in a normal usage state, an object inserted into the jack enables the linkage contact device to generate displacement extrusion or enables the connection of the pin portion of the socket contact and the wire-inlet contact so that a path is formed, the other jack is connected to the circuit, and the socket contact in the jack at the side is still in a switch-off state; and during normal usage, two pins of a plug respectively enable the opposite sides to be connected to the circuit through the linkage contact device so that normal usage is realized. According to the safety socket, an opposite-control type scheme is proposed according to the research that children security events caused by sockets are mostly caused by the fact that children hold conductors into the single jacks, the circuit connection condition in the jacks can be effectively controlled, and hidden risks generated by mistaken insertion into the jacks by the children are prevented.