Differences

This shows you the differences between two versions of the page.

--- wiki:01_btms:start [2023/03/21 12:06] – removed - external edit (Unknown date) 127.0.0.1
+++ wiki:01_btms:start [2024/04/08 06:41] (current) – [Detailed Wiring diagram] alen.mejak
@@ Line 1: / Line 1: @@
+====== BTMS - Battery Monitoring System ======
+BTMS is a battery monitoring system for larger UPS systems. Enables:
+  * cell status monitoring
+  * equalization of cell load within the string
+  * switching off strings where an error is detected on at least one cell
+===== Dictionary of terms and abbreviations =====
+|< 1200px 150px 250px >|
+^ BTMS     | Batery Monitoring System              | Battery monitoring system for larger UPS systems.                                                                                                                                                           |
+^ battery  | -                                     | Lead-acid rechargeable battery stores electricity to operate the UPS during a power outage.                                                                                                                 |
+^ cell     | -                                     | Basic battery building. A battery usually consists of several cells connected in series.                                                                                                                    |
+^ string   | -                                     | Multiple batteries connected in series.                                                                                                                                                                     |
+^ UPS      | Uninterruptible Power Supply          | A device that provides battery backup when the electrical power fails or drops to an unacceptable voltage level.                                                                                            |
+^ BM-AG    | BTMS Aggregator                       | When several BM-GW's are needed at the Datacenter, aggregate all BM-GW and provide site functionality + Cloud connectivity and alarming.'                                                                   |
+^ BM-GW    | BTMS Gateway                          | Visualization (browser) of batteries and installed systems connected to the GW logically grouped into strings and UPS's in real time and their historical data. Alarming, Cloud connectivity                |
+^ SCADA    | 3rd party SCADA                       | Any SCADA that accesses battery, stringig and/or UPS data via Modbus TCP/IP protocol.                                                                                                                       |
+^ PC web   | PC with WEB Browser                   | Viewing the user interface from BM-AG or BM-GW via any web browser.                                                                                                                                         |
+^ BM-MC    | BTMS Master Controller                | It allows the connection of BM-TH sensors and configurable digital inputs for monitoring additional alarm signals and outputs for alarming or switching off strings where an error occurs.                  |
+^ BM-HMI   | BTMS Human-Machine Interface          | Local display of the state of the batteries inside the UPS, string and by battery.                                                                                                                          |
+^ CAD      | BTMS HMI interface                    | Communication interface for connecting BM-HMI to BM-CS                                                                                                                                                      |
+^ BM-LC    | BTMS IO Module                        | Expansion for MC with additional digital inputs and outputs.                                                                                                                                                |
+^ BM-TH    | BTMS Temperature and Humidity sensor  | Ambient temperature and relative humidity sensor.                                                                                                                                                           |
+^ BM-GS    | BTMS Insulation monitoring sensor     | String insulation resistance monitoring                                                                                                                                                                     |
+^ BM-SS    | BTMS String Master                    | It monitors the string (string current), aggregates battery data (total string voltage, average SOC, Balance) and enables monitoring of data from BM-CSs.                                                   |
+^ BM-HS    | BTMS Hall Sensor                      | It measures the string current                                                                                                                                                                              |
+^ BM-CS    | BTMS Cell / Battery Sensor            | Control of each individual battery / cell. It allows monitoring the status, voltage, internal resistance, temperature of the cell and calculates SOC and SOH.                                               |
+^ SOC      | State Of Charge                       | Calculated battery charge; it is calculated from the actual voltage on the battery and by integrating the charge and discharge current.                                                                     |
+^ SOH      | State Of Health                       | Informative battery state calculation that takes into account internal resistance, battery temperature, rise/fall of voltage during charge/discharge and other parameters that affect battery performance.  |
+^ Balance  | Voltage balance within string         | Calculation of voltage inequality on the batteries within the string. Battery sensors can actively equalize the voltage between the batteries within the string during the floating charge phase.           |
+===== System diagram =====
+{{:wiki:01_btms:sch.svg|}}
+===== Wiring diagram =====
+{{:wiki:01_btms:sch_v4.png?direct|}}
+===== Detailed Wiring diagram =====
+{{ wiki:01_btms:00_hw:wiring_diagram_bm-ca-36_20240620.pdf |  Detailed Wiring diagram }}