DSO RTU
Telecontrol cabinet version 4 (TCKv4)
Fluvius telecontrole with the telecontrol cabinet version 4 (TCKv4), over IEC 60870-5-104 or with analog signals.
Older Fluvius files still use the telecontrol cabinet version 4 (TCKv4) instead of Netflex. The grid study tells you: it mentions "telecontrolekast versie 4". The Voltmasters EMS follows the Fluvius specification TAU341K01.
Difference with Netflex
| Topic | Netflex | TCKv4 |
|---|---|---|
| Active power | Limits at the connection point and on the assets, consumption included | One P setpoint for the assets together, no consumption steering |
| Reactive power | A band | A target |
| Reference | Contractual power and asset reference power | The installed power Pinst |
| Measurements | The EMS sends the measurement channels back | Fluvius measures in the cabinet itself |
| Emergency stop | Through the IO module | The cabinet disconnects the installation itself |
The connection
The cabinet offers two interfaces, and the customer uses one of them:
- IEC 60870-5-104 (B1.2): same as Netflex. The EMS is the server on TCP
2404, common address100, through an ethernet-to-USB adapter on the controller. - Analog (B1.1): 4-20 mA setpoints and potential-free contacts on terminal block XGX101. The EMS reads them through a Volt AIO. If an existing cabinet works analog today, it stays that way: the customer may not change anything in the cabinet.
Configuration
Go to Configuration → Grid & market → DSO RTU settings.
- Set the telecontrol provider to Fluvius TCKv4.
- Enter the installed power Pinst (kW) as Fluvius registered it. Left empty, the installed power of the asset group is used.
- In the table below, tick the devices in the registered asset group. Only those devices are steered.
If Fluvius TCKv4 is not in the list, update the controller first.
What Fluvius sends
| Function | What the EMS does |
|---|---|
| P setpoint | Upper limit on the production of the asset group, in % of Pinst. Negative is production: -40 % allows 40 % of Pinst, -100 % imposes nothing. |
| Q setpoint | Target for the reactive power, in % of Pinst, positive is inductive. Applies only in Q mode remote. Split between battery and PV by their installed power. |
| Q mode | Local or remote. In local mode the local reactive operating point applies. |
| Test | Test mode during commissioning. Over IEC 60870-5-104 only. |
| Disconnect status | The cabinet has disconnected the installation. The EMS sets PV and battery to 0 kW and restarts from 0 once reconnected. Over IEC 60870-5-104 only. |
What the EMS reports back
A mirror of the Q mode, the test mode, the P setpoint and the Q setpoint as soon as they arrive. The EMS sends no measurements: Fluvius measures P, Q and U at the connection point and P and Q per production unit itself.
With the analog interface the Volt AIO sends the P setpoint and the Q setpoint back as a current, and the Q mode with two contacts. There is no test mode there.
Emergency stop
The decoupling switch and its position signals are wired straight to the cabinet, not to the controller. The cabinet opens the switch itself and reports it through the disconnect status.
Local reactive operating point
In local Q mode the grid study imposes a reactive operating point: while the site injects, 5 or 10 % of the injected power inductive, and possibly 32 % at high grid voltage. Set it under Configuration → Grid & market → Grid settings → Reactive operating point:
- Inductive share of the injected power: 5 or 10 %, as in the study.
- Second operating point at high voltage (Uc): the supply voltage from the study. Empty when the study states no second operating point.
The EMS regulates the reactive power at the connection point with the battery and the PV. A remote Q setpoint always takes precedence.
Commissioning
- Ask Fluvius for Pinst. It is not always the power in the study.
With IEC 60870-5-104
- Check that the connection is active and that Fluvius runs a general interrogation and a clock sync.
- Fluvius tests in test mode: P setpoint, Q setpoint in both modes and the disconnect.
Analog, with a Volt AIO
Wire the Volt AIO to terminal block XGX101 of the cabinet:
Every signal of the cabinet on its own channel. Wire every site this way, so the assignment is the same everywhere.
- Cable. Fluvius recommends a shielded LIYCY-JZ 16G1.5. The customer lays the cables and connects them in the Fluvius cabinet.
- Cable length. Fluvius allows up to about 1000 m, but the digital inputs of the Volt AIO are rated for 500 m. Keep the cable as short as possible.
- Analog outputs. AO0 and AO1 share one return (AGND), so the returns on terminals 6 and 8 are joined.
- Q mode. The contacts on terminals 9 to 12 are potential-free. Connect them as dry contacts to DI0 and DI1.
- Feedback. The digital outputs are open collector. Let DO0 and DO1 each energise the coil of an interposing relay, and report the state to terminals 13 and 14 with its potential-free contact. Check on the Fluvius drawing how those inputs are powered.
Configure the Volt AIO and test the chain before the appointment with Fluvius:
- Apply steps from 4 to 20 mA on AI0 and AI1 with a current source or calibrator, and measure the echo on AO0 and AO1. Every echo must be within 0.1 mA of the applied current.
- Switch the Q mode by closing terminals 9-10 and 11-12 of XGX101 in turn, and check that the right feedback follows on terminals 13 and 14.
- Break an input and check that the open wire is detected.
- Unplug the network cable of the Volt AIO and check that the outputs go to 0 mA after the watchdog time and the feedbacks drop.