采用5G技术的低压备自投装置的投切和通信方案

为提高低压配电网的供电可靠性，降低通信成本，在低压配电网的环网单位结构基础上，采用通信环网数据传输方式和模型映射规则，并考虑同一母线备自投相互备用的投切逻辑，提出基于5G通信技术的低压备自投的投切和通信方案。方案中备自投随联络线进行配置，一条母线由两个备自投进行控制，环网架构中所有备自投需要的信息，经过模型数据映射处理好数据后通过5G发射端传入通信环网中。在接收通过5G技术传输的状态参数等数据后，低压备自投在母线失压、进线无流且同一母线的另一备自投无动作的情况下进行投切，即使在一侧备自投数据接收有误或者拒动时，该方案仍能够保证供电可靠。时延特性分析与计算表明，该方案的通信时延满足低压备自投通信要求，方案具有可行性。

Implementation Scheme of Low Voltage Standby Auto switchingBased on 5G Technology

In order to improve the power supply reliability and cost effectiveness of low voltage distribution network and reduce the communication cost,a switching and communication scheme of low voltage standby automatic switching based on 5G communication technology is proposed on the ring network unit structure of low voltage distribution network,by adopting the data transmission mode and model mapping rules of communication ring network and considering the switching logic of standby automatic switching of the same bus.In this scheme,the standby power switches are configured along tie lines,one bus controlled by two standby power switches,and all the information required by the standby power switches in the ring network architecture is processed by model data mapping transmitted into the communication ring network through the 5G transmitter.After receipt of relevant data transmitted by 5G technology,the low voltage standby auto switching is carried out under the condition that bus voltage is lost,incoming line has no current and another standby auto switching of the same bus does not act.The scheme ensures reliable power supply even when the standby auto switching receives incorrect data on one side or refuses to operate.The analysis and calculation of the delay characteristics shows that the 5G based communication delay design meets the requirements of low voltage standby auto switching and is therefore feasible and reliable.