Page 18 - Bosch Controls and Connectivity

18 | Controls and connectivity Controls and connectivity | 19

CHP control units: ideal complements Premium buffer storage control

The CHP module control can be supplemented with different components and options, tailored to your Buffer cylinders increase CHP module operating time: As with the multi-module control, all maintenance
specific needs. One control unit can be used for multiple Bosch CHP modules and can be monitored when heat is not being transferred, the CHP units heat work can be undertaken at the same time – meaning

using remote access. At the same time, the modules offer great flexibility when connecting to different the storage cylinders in order to guarantee conti nuous shorter downtimes. Particularly high on-site power
operation. The premium buffer storage control allows
generation is made possible by combining the buffer
grid operators. for regulation of up to two CHP modules based on cylinders with a power-controlled operation of the CHP
buffer cylinder temperatures. Operating hours are modules, supported by the mains draw control, for
Multi-module control (MMS) compared to ensure an even load across the CHP example.
units. The display visualises the CHP module and
buffer storage system for easy handling and parameter
setting.
Using the higher-level multi-module (MMS) control for The multi-module control has a wide range of on-site
up to six CHP modules can avoid the need for an interfaces, such as digital inputs for releasing the CHP
on-site higher-level automation system. Operational modules, external emergency stop and potential-free At a glance
status, confi guration and a system overview are shown contacts for warning/fault feedback signals or starting CHP Storage ▶ Control up to two CHP units without using the
and controlled separately for each CHP unit. An oper- a peak-load boiler. Modifications can be made depend- on-site building management system
ating parameter comparison is undertaken for all of ing on the application required, thanks to the reserve Supply ▶ Optimised heat supply in combination with buffer
flow
the connected CHP modules, through which the con- contacts in a separate multi-module control cabinet ON cylinders
trol strategy ensures even loading to achieve maximum that can be freely configured. ▶ System visualisation included
service life. Start and stop points are pre-configured at 47 kW OFF ▶ Start/stop/performance control can be configured
the factory but can also be set individually. At a glance Output Return freely
▶ Stand-alone control of multiple CHP units via a flow ▶ Even load distribution reduce overall maintenance
Configuration of the specific operating modes allows central, separate control cabinet saves on building costs for the CHP module cascade
for great flexibility: management system (data points) ▶ Easily combined with power-controlled operation
▶ Heat-controlled, based on the supply flow ▶ An integrated display allows for both a system over-
temperature view and configuration using just one control device
▶ Heat-controlled, based on the buffer storage ▶ Greater flexibility through configuring the control
temperatures logic
▶ Power-controlled, based on the power drawn from ▶ A range of external interfaces, meaning further heat
the mains sources, can be added to the control Control unit for power supply companies (EVU)
▶ Power-controlled, island mode ▶ Avoid downtime through automatic request and
release of CHP units as well as optimal maintenance
planning Ensuring maximum power grid stability through pro- Request signals from power supply companies are, for
viding access for the power supply companies to the example, unrestricted performance reduction, active
CHP control unit is regulated by law. This leads to power specification or disconnection from the mains.
significant extra work for the operators when setting At the same time, feedback signals are sent regarding
up the connection conditions. Especially challeng ing different operating parameters, e.g. operating mode,
are the different requirements with complex control active power notification or power/voltage notification.
Multi-module control as algorithms, or regional grid operators reading out
a higher-level automa- certain measurement variables from generating units.
tion system for up to six Almost all power supply company requirements can be At a glance
▶ High level of flexibility through the comprehensively
CHP modules displayed using Bosch's power supply company control configurable control parameters
unit. The separate switch box is supplied with a num- ▶ Modification of CHP unit parameters through an
ber of input/output contacts to enable flexible configu- external input signal from the grid operator/power
ration. Intervention from the grid operator is visualised supply company
on the CHP control display and shows the reason for ▶ Expansion of infeed management and fulfillment of
the current CHP unit operation, allowing the oper ator grid operator specifications as a contribution to
to see instantly why a CHP module is operating at a power network stability
reduced output, for example. ▶ Visualisation of power supply company specifications
for greater operating mode transparency for the
CHP module operator