Kaco blueplanet 87.0 TL3 Manual

Also see for blueplanet 110 TL3: Manual Operating instruction Manual Manual Operating instruction

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Kaco blueplanet 87.0 TL3 Manual Manual pdf 70 page image

Setting the maximum active power PlimSome grid connection rules insist that the agreed reactive power be started up from every operating point of the plantwithout a reduction in the current active power. Considering the fact that the blueplanet 87.0 TL3 to 150 TL3 has a semi-circular P-Q operating range, a reduction in the active power is required during operation at maximum active power be-cause an apparent power reserve is not available. By adjusting Plim, the maximum active power can be restricted in orderto ensure that the agreed reactive power can be delivered from any active power operating point.The maximum feed-in active power PEmax is thus reduced to the set value Plim.10.3 Reactive power controlReactive power can be used in electrical energy supply networks to bolster the level of voltage. As such, feed-in inverterscan contribute to statistical voltage stability. Reactive power brings about a voltage drop at the inductive and capacitivecomponents of the equipment which can either bolster or reduce the level of voltage. If the generating plant draws in-ductive reactive power while active power is being fed in, part of the voltage swing caused by the active power feed canbe compensated for by the supply of reactive power.This reactive power mode and the respective control process are specified by the grid operator. If no control process hasbeen specified, then the system should be operated using a reactive power specification of 0%.The following functions for controlling the reactive power are implemented in the devices listed above: cos ϕ constant Q constant cos ϕ /(p/pn) Q(U) 10 nodes Reactive power is prioritised in each method. The maximum possible active power that can be fed in is reduced in linewith the P-Q operating range when a specific reactive power level is specified.cos ϕ constantWhen there is a cos ϕ constant, the specified shift factor cos ϕ is set permanently by the device. In doing so, the reactivepower level is set in line with Q=P*tan ϕ dependent on power output which produces the specified shift factor cos ϕ con-sistently. If the specification is changed (e.g. via communications interfaces), the new value is adopted by way of a filterand a gradient limit in a muted manner. The settling time and gradient limit are adjustable.Q constantWhen there is a Q constant, the specified reactive power value is set permanently by the device. If the specification ischanged (e.g. via communications interfaces), the new value is adopted by way of a filter and a gradient limit in a mutedmanner. The settling time and gradient limit are adjustable.cos ϕ /(P/Pn)When it comes to cos ϕ/(P/Pn), the cos ϕ and, deduced from this, the reactive power value are calculated continuously asa function of the current power level. This function ensures that grid support is provided by the reactive power when asignificant voltage boost is anticipated due to a high feed level.Fig. 69: cos ϕ/(P/Pn) standard characteristic curve with 3 nodesKACO blueplanet 87.0 TL3 KACO blueplanet 92.0 TL3 KACO blueplanet 110 TL3 KACO blueplanet 125 TL3KACO blueplanet 137 TL3 KACO blueplanet 150 TL3Page 70EN