Wireless sensor network (WSN) is a new type of wireless network. It has many advantages, but there are also some problems, which allow adversary much easier to analyze network vulnerabilities, to conduct an attack and destroy a whole network. This paper proposes a model of secure wireless sensor network, which is able to defend against most of known network attacks and doesn't significantly reduce the energy power of sensor nodes (SN). We propose clustering as a way of network organization, which reduces energy consumption. Network protection is based on the calculation of the trust level and builds trusted relationships between trusted nodes. Operation of trust management system is based on a centralized method. The experimental results show that the wireless sensor network model designed in this paper solves the task of development of energy efficient; TMS shows satisfied results in preventing the attacks.