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Changes for page 3. Metering Channels

Last modified by Iaroslav Platonov on 2026/06/08 09:57
From version 36.1
edited by Lana
on 2025/11/30 19:34
Change comment: Uploaded new attachment "1764549295956-131.png", version {1}
To version 44.1
edited by Lana
on 2025/11/30 19:40
Change comment: Uploaded new attachment "Screenshot 2025-11-30 at 16.40.46.png", version {1}

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155 155  When adjusting an already created metering channel, the **Settlement channel: editing** page opens (see Fig. 5.3).
156 156  
157 157  [[image:Screenshot 2025-11-30 at 16.34.28.png]]
158 +
159 +Figure 5.3. Metering channel: editing page
160 +
161 +On the page that opens, specify the name of the channel, its ID (it is specified automatically when created, but it does not change for the existing one) and the Code (an optional field), the category of the parameter – electricity/energy resources/technology/emissions/diagnostics/time and the corresponding categories of units of measurement, the object and device to which the parameter will be linked.
162 +
163 +In the **Template** field, specify the formula for processing the values of all parameters used in the calculation. The formula can use arithmetic operations, conditions, mathematical functions that are specified in [[image:Screenshot 2025-11-30 at 16.35.23.png||height="30" width="135"]] and the following variables for power channels:
164 +
165 +* ea_imp - energy A+
166 +* ea_exp - energy A-
167 +* er_imp - energy R+
168 +* er_exp - energy R-
169 +* pa_imp - power A+
170 +* pa_exp - power A-
171 +* pr_imp - R+ power
172 +* pr_exp is the power of R-
173 +* ra_imp - A+ readings
174 +* ra_exp - A- readings
175 +* rr_imp - R+ readings
176 +* rr_exp - R- readings
177 +
178 +=== 5.3.  Calculated channels via Information Model ===
179 +
180 +For calculation channels of the same type, it is possible to define custom formulas that operate based on Information Model objects and their attributes. In addition to tags and channels, the Information Model can also supply supplementary data (e.g., reference information). To create a template, click the create template button [[image:Screenshot 2025-11-30 at 16.36.34.png||height="27" width="26"]] as shown in Fig. 5.4.
181 +
182 +[[image:Screenshot 2025-11-30 at 16.37.01.png]]
183 +
184 +Fig. 5.4 – Creating a Formula Template
185 +
186 +[[image:Screenshot 2025-11-30 at 16.37.47.png]]
187 +
188 +Figure 5.5. Creating custom formula
189 +
190 +As shown in Fig. 5.5, the custom formula creation window requires input of the formula name, an optional identifier code, and the formula expression. An example demonstrating the calculation of losses in cable lines is provided in Fig. 5.6.
191 +
192 +[[image:Screenshot 2025-11-30 at 16.38.43.png]]
193 +
194 +Figure 5.6. Calculation formula
195 +
196 +[[image:Screenshot 2025-11-30 at 16.39.09.png]]
197 +
198 +Figure 5.7. Using calculation formula
199 +
200 +Fig. 5.7 shows the application of the calculation formula:
201 +3*IM{Object identifier IM}.r_ohm_per_km*pow(agg("mean","{line current}","{Interval}"),2)*0.001, where:
202 +
203 +* **IM{Identifier of the IM object}. r_ohm_per_km **– reference to the value of the attribute with the code **" r_ohm_per_km " "** of the information model object
204 +* **Pow **– exponentiation
205 +* **Agg **is an aggregation function
206 +* **Mean **– average value for the time interval
207 +* **{line current} **– a link to the tag ID
208 +* **{Interval} **– data interval.
209 +
210 + The braces **{ }** contain the arguments that need to be entered in the data entry fields as in Fig. 5.7.
211 +
212 +=== 5.4. Downloading/Uploading calculated channels ===
213 +
214 +The** Downloading/Uploading configuration files** page (Settings > Configuration files) provides functionality for importing and exporting calculation metering channels using Excel files.
215 +
216 +
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