![]() Thereafter, effective countermeasures to the pinned terminal issues have been investigated by many researchers. The unpredicted communication failure of pinned terminals may even aggravate the power imbalance among MGs and misguide the NMGs into a mal-operation state with stability issues. Under this circumstance, the MG where this failed terminal is located will completely lose the capability to communicate with others, and deviate from the outside system. Moreover, if multiple control objectives, for instance, voltage/ frequency regulation, power sharing, and economic optimization are required simultaneously, the communication system will become very complicated with multiplied data exchange.Īnother non-negligible issue of distributed control schemes is the unreliability issues under the pinned terminals outage and communication failures since the fixed pinned DERs or pinned controllers within individual MG are still necessary like that of the centralized control. Obviously, the communication burden will be greatly increased as well. It is revealed that if one DER links to more neighbors, both the better convergence speed and control accuracy of the entire system can be achieved. In, several alternative communication connections of consensus-based distributed control are comparatively analyzed. In, several optimal consensus-based distributed control strategies are presented for MGs to achieve objectives of the voltage/ frequency regulation, active/reactive power sharing, economic operation, and energy-reserve market design, respectively. Compared with centralized control schemes, they could feature enhanced scalability, and reliability. With the distributed control schemes, DERs only need to exchange information with their neighbors to gradually realize the system’s consistency with the consensus algorithm. Finally, the effectiveness and feasibility of the proposed strategy are verified through the PSCAD/EMTDC platform. ![]() The proposed strategy can be also extended to NMGs with various topologies and provide the “plug and play” capabilities of DERs or MGs. Therefore, unreliability issues in the event of pinned terminal outage and converters’ communication failure can be fully addressed and the communication bus within each only needs to transmit one DER’s signals. Compared with conventional methods, the communication among MGs is essentially realized through the dynamic DER leaders instead of pinned ones. Moreover, the local weight selecting method (LWSM) is proposed to automatically select the two-level dynamic leaders according to the real-time system operation state. Subsequently, the secondary level leader considering each MG feature is selected among the bidirectional interlinking converters (BICs), whose signals would be shared with other BICs by communication to achieve power management among MGs. The first level dynamic leader with considerations of distributed energy resources (DERs) feature is selected to guide the output of DERs and achieve the power management within individual microgrid (MG). This paper proposes a multilevel dynamic master-slave control strategy via two-level dynamic leaders to realize the resilience enhanced power management of NMGs. In the drop down list, click Disabled, and then click Apply.Conventional power management methods of networked microgrids (NMGs) are limited to the failure of pinned communication terminals and heavy communication burdens. ![]() In the Properties window, locate Startup type. ![]() In the Services window, locate the True Vector Internet Monitor service, and then double-click it.Click Start, click Run, type services.msc, and then press ENTER.Log on by using an administrator account.Method 3: Disable the Startup type service If removing the Zone Labs firewall did not resolve the problem, disable the Startup type service. ![]() Please see the program documentation or contact Zone Labs at the ZoneLabs Web site for more information about how to do this. Method 2: Remove the Zone Labs firewall software from the computer Remove the Zone Labs firewall software from the computer. Please see the program documentation or see the Zone Labs Web site for more information about how to configure ZoneAlarm for ICS. Method 1: Configure ZoneAlarm for ICS supportĬonfigure ZoneAlarm for ICS support. To resolve this behavior, use one of the following methods that is appropriate to your situation. ![]()
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