Woodward easYgen-3000XT Series, Руководство пользователя

Страница: 331 / 1205

4.4.4.3.4 Prerequisites
All easYgen controllers connected to the system must have rated system frequencies and
breaker logic configured identically and the parameter "Active power load share"
(parameter
╚═▷ 5531 ) or "Reactive power load share" (parameter ╚═▷ 5631 ) must be
enabled.
4.4.4.3.5 Load-Share Interface
The easYgen utilizes a peer relationship between units to control the system. This permits
for parallel applications of up to 32 generators.
The current load-share interface is selected by parameters ╚═▷ 9924 and ╚═▷ 11986 LM
86.13.
For set-up of the load-share communication refer to ╚═▷ “3.4.5 Ethernet Interface (incl.
Remote Panel)” for information about the CAN bus connection or to ╚═▷ “4.7.5 Ethernet
Interfaces” for Ethernet
4.4.4.3.6 Load Sharing
The "Active/Reactive power load share" together with the "Active/Reactive power load
share gains" determine if and how a generator performs real power or frequency control
when paralleled with other generators in an islanded operation.
In the illustrated control system, it must be noted that each control calculates the mean
utilization factor of all controls from the data transmitted via the selected bus and then
compares this with its own utilization factor. The utilization factor is compared with the
reference variable and results in a new reference variable setpoint. Frequency and real
power control are carried out simultaneously in these controls (corresponding to the
reference variable).
Frequency control is carried out via the measured voltage/frequency of the voltage
system. The MPU is used merely for monitoring functions, or is available as a control
value to the secondary controller.
331 easYgen-3000XT Series B37574
4 Configuration
4.4.4.3.4 Prerequisites
Released