DESCRIPCIONES GENERALES
2.2 Proceso de lixiviación de cobre en Pilas.
This part of the document describes functional requirements of MDM/R system. Target functionality of the system is divided in four main fields, as shown on Figure 2. All these fields exactly reflect the roles within MDM/R system, as described in this specification.
Figure 2 – General functionalities of MDM/R system
2.1 OVERVIEW OF FUNCTIONALITIES
This document describes detailed functionality of MDM/R system, as well as mutual relation with other information subsystem within electric utility, as shown on Figure 3.
2.2 REGULATORY AGENCY REQUIREMENTS
MDM/R system has to meet all current state laws, rules, instruction, guidelines and regulations, including all requirements of all regulatory bodies, agencies and boards.
In order to achieve maximum security, MDM/R system shall meet all current laws and regulations related to metering data and/or data transfer to and from electricity customer, including all laws and regulations applied to metering, security, privacy and telecommunications.
2.3 UNIQUE POINT OF DELIVERY (POD) ID NUMBER
MDM/R system shall identify in a unique way all points in which electricity delivery to customers is executed, i.e. points of delivery in which metering is executed via meters or calculation aimed at substitution of the missing measurements. Unique point of delivery ID shall be awarded by AMM system and it shall represent a unique identifier serving for identification of the point on which calculation of consumed electricity is performed, whereas, consumption information may be collected from several advanced meters. Unique point of delivery ID should not be an ‘intelligent’ number and it should not include ED subscription number of the customer.
Therefore, if electric utility registers several points of delivery at the same time, unique point of delivery ID should not be generated sequentially, in order to avoid possible overlapping in terms of identifier generation. AMM system should establish internal connections between unique point of delivery ID on one hand and meter ID and other parameters on the other hand. Unique metering point ID may be physical or virtual (in case of calculation of total consumption from several points of delivery). Unique point of delivery ID shall be used in all communications executed by MDM/R system, related to the target point, both in terms of metered consumption or calculated value.
MDM/R system should be capable to group several unique POD IDs together according to POD classification. Furthermore, MDM/R system should be capable to perform the grouping of reports on metered consumption and consumption calculation according to individual PODs or grouped PODs. Each metering point may belong to none, one or several PODs within POD classification. Unique POD ID should be defined to provide uniformity at the level of electric utility. Moreover, in time it is also necessary to provide the privacy and consistency of data access. Registration process of unique POD IDs itself and data synchronisation between MDM/R system, AMM system and Customer Information System (CIS) at the level of electric utility, will be the subject of a detailed programme to be developed in the course of designing and it will depend on the final implementation of the selected MDM/R system solution. Initial registration process of unique POD IDs, as well as the on‐going maintenance process, will also be the subject of a separate detailed programme to be developed during the designing process.
After meter dismantling and replacement with other advanced meter, unique POD ID should remain the same. Possible customer change on such point of delivery shall not have an impact on unique POD ID. MDM/R system shall maintain all relations related to unique POD ID, continuing further access to its historic data even after withdrawal of unique POD ID. There will be no metering data for withdrawn POD ID, whereby the system will report that this point has been deactivated.
2.4 DATA ENTRY INTO MDM/R SYSTEM
This document identifies elements which need to be transferred to and from MDM/R system. Data transfer request should be executed consistently to and from MDM/R system, information subsystems within electric utility and other interested parties.
Data entered into MDM/R system include:
Data on metered consumption and reports from AMM system.
Data from Customer Information System.
Information related to tariffs and price structures.
Data transferred from Billing System.
Data on network resources on which points of delivery have been implemented.
Data from MDM/R system required by other information subsystems within electric utility and other interested parties.
Reports and confirmations.
Adopted standards for data transfer via different interfaces should provide full support for the functioning of data transfer process to and from MDM/R system, including all information necessary to meet specification defined in this document. Subject standards adopted for data transfer towards MDM/R system should provide self‐check functionality of submitted data. MDM/R system should support data transfer between advanced meters and devices not having meter functionalities, in order to enable the functionality level defined under this specification. In addition to this, all data transfers should meet strict security conditions indicated in this specification.
MDM/R system identifies the following data elements to be transferred via those interfaces.
2.4.1 TRANSFER OF RECEIVED METER DATA FROM AMM SYSTEM
MDM/R system should receive and process data on metered consumption and other data from subordinated AMM system. Received meter data to be transferred to MDM/R system from each advanced metering control computer (AMCC) include the following:
Data on metered consumption for households, having no requirements in terms of required load on hourly level; data on consumption should be transferred at the end of daily accounting interval.
Data on metered consumption for industrial customers, having no requirements in terms of required load; data on consumption should be transferred either as 15 or 60‐ minute data at the end of the daily accounting interval.
MDM/R system shall be capable to receive and process data on metered consumption for each daily accounting interval. MDM/R system should be scalable in terms that it should support all requirements related to performance and forecasted load growth, where it is realistic to expect the stabilisation of reading interval on the hourly level.
It may be expected that the size of data transferred by advanced metering control computer (AMCC) is restricted to the maximum number of entries. Transfer in terms of data size shall be restricted in terms of prevention of too long or re‐emission of data during the transfer of large data amounts containing errors.
Moreover, it is necessary for all data transferred via this data transfer method to be related to the same calendar day. Finally, it is expected that all of these transferred parameters, at least contain identification information in the heading defining data upload priority for MDM/R system for several subordinated devices, when simultaneous data transfer is requested.
Data transfer priorities
MDM/R system will save all meter data versions received from advanced metering control computer (AMCC). For the purpose of adaptation enabling MDM/R system to perform urgent data processing in accordance with critical situations, when several requests need to be processed at the same moment, it is necessary to include data processing procedure according to priority. MDM/R system should support processing priority determination procedure regarding data to be submitted from AMM system. Priority should be based on time and date of meter data creation.
MDM/R system should be capable to enable receipt and storage of all data on metered consumption every day for the previous daily reading period. Considering that meter data do not have to be transferred under one transmission (session), MDM/R system should be able to accept data transmissions more frequently. In order to have successful data transmission, it is necessary for all process clocks on all computers within subject subsystems to be synchronised in terms of time.
In addition to realised interfaces based on Web services, electric utility should allocate (reserve) space on FTP server within MDM/R system, for possible necessary data exchanges with other information subsystems.
Syntax validation
MDM/R system should validate the syntax of every message containing data on metered consumption received from AMM system. In the course of syntax validation, MDM/R system should establish that the data structure is in accordance with implemented standards, as well as that the value of ‘control amount’ of the message is identical with the value received through calculation within MDM/R system. MDM/R system should execute the calculation of ‘control amounts’ over all received data messages, compare the value of calculation results with original ‘control sum’, and in case that these values are identical, it should conclude that the message was not damaged and forward it to further processing.
Semantics validation
MDM/R system should validate the semantics of every message containing data on metered consumption received from AMM system. For the purpose of system operation efficiency increase, it is necessary to verify whether information in the message heading correlates with information located in other information subsystems of electric utility. Additionally, MDM/R system should constantly verify whether advanced meters sending data on metered consumption are activated.
Manual entry
MDM/R system should provide the possibility of manual entry of meter data and other data in some situations, such as, e.g. the situation when current measurements are available, but the advanced meters no longer communicated within AMM system, whereby these measurements are not submitted to MDM/R system for further processing. In such situations, AMM system services or other information subsystems within electric utility are expected to find a way to transfer data, e.g. manually, into MDM/R system. Manually entered meter data shall be in the same format as the ones automatically entered into MDM/R system by AMM system, whereby,
the same validation of message content is performed, as in the case of automatically transferred messages.
MDM/R system should be capable to process any additionally added archive measurement and this functionality should be set as default in other improvements of the Billing System within electric utility.
Confirmation
After every data sent by AMM system is received and processed in order to be validated by MDM/R system, MDM/R system shall send a message to AMM system in order to confirm the successful receipt of the message or possible problem in the transfer.
Data validation prior to (VEE) analysis
When transferred meter data are successfully received by MDM/R system and after all syntax and semantic validations are performed, MDM/R system should upload the subject data into the data base. MDM/R system should archive them, to avoid possible deletion of successfully uploaded data.
MDM/R system should continue the initiated validation process of data stored into the data base, regardless of the fact that it continues with the receipt of other data.
MDM/R system should perform, without restrictions, the following data validations uploaded into MDM/R system:
During every data transfer, it verifies whether combination ‘Unique POD ID/meter ID’ is valid and whether they are concurrent with data in MDM subsystem.
It validates whether exact time is distributed on all advanced meters, as well as other devices within AMM system.
It validates whether MDM/R system received meter data by 5.00 hrs.
It compares whether unique POD IDs from which data on metered consumption have been received are identical with data on this point of delivery, received from other information subsystems in electricity distribution companies.
The level of complete availability of advanced meters is validated within AMM system, which should not be below 98%.
It confirms whether all meter data obtained by advanced metering control computer (AMCC) have the accuracy of 0.01 kWh.
It validates at what hour has the point of delivery supply been interrupted and when the supply was restored. As the consequence of outage, MDM/R system should detect the difference between the moment when the load was zero and the moment when to load has not been transmitted, all on the basis of data submitted by AMM system.
It validates abnormal changes in metered data consumption.
2.4.2 SUBMISSION OF REPORTS TO MDM/R SYSTEM BY AMM SYSTEM
AMM system should submit various reports to MDM/R system, defined based on functional specification for AMM system. MDM/R system should archive submitted reports, whereas, they should be indexed to enable rapid search by MDM/R system operator and their display. Subject reports should at least be indexed according to date and type of report.
MDM/R system should be capable to receive all reports indicated in AMM system specification, but the final list of necessary reports shall be determined according to business requirements of electric utility.