Requirements for the structure and functioning of the system

 

ACSEE SS is a complex hardware and software that functions as an autonomous system of accounting. ACSEE SS is a system of hardware and software definitions, collection, storage, transmission and display of commercial and technical accounting of electric power.

Normal operation of the system should be automatic data collection, processing and storage of information. In emergencies it is necessary to provide for manual entry and correction of data.

Operation ACSEE SS carried out continuously in real time. The structure of the ACSEE SS shall consist of the following levels of hierarchy:

· on the first sublevel, measurement, (level meters installed at the facilities of accounting) ACSEE substation should be capable of measuring the active and reactive energy and power on the basis of three-phase meters in the forward and reverse directions, the determination of the volume of electricity that enters the network (provided by the network), consumed for own needs and economic needs of each set time of day, and storage of certain data in the primary database (PDB) counter;

· on the second sublevel (communication) ACSEE should provide read data records of PDB electric power meters and data collection server using the LAN;

· on the third sublevel level of processing and providing information, ACSEE SS must perform the processing of accounting data, which come automatically or by manual input, load them in the server ACSEE for further processing, access to server data ACSEE by staff using a software application automation energy accounting jobs.

 

Components ACSEE communication sublayer should ensure the collection of information from the counters of electric power metering and transmission of this information to the third sub-layer systems for processing and presentation parameters of electricity metering.

Technical means ACSEE meter sublevels should include:

· current transformers and voltage;

· secondary circuits of switching current and voltage transformers;

· electricity meters.

ACSEE technical means of communication must include sublayer:

· interface converters;

· links;

· means of Telecommunications.

 

Technical means ACSEE SS level processing of information should include:

· Server data collection and processing;

· Automation of workplace duty Substation.

 

Information interaction between the components of the system should be carried out in automatic or automatic mode. At the same time for the information exchange between the sublevels of the system should provide the following modes of information exchange:

· periodic data collection from electricity meters;

· collection of data from electricity meters by the operator, including in emergency situations.

 

Technical solutions for an ACSEE upper levels is determined at the design stage.

In case of failure of communication channels, the individual components of the system shall be capable of automatically switching to a backup channel.

It should be possible to temporarily exclude from the survey of individual energy meters without losing the last of accumulated data.

Diagnosing the system should be carried out periodically in the background automatically recording the diagnostic messages in the message log available for viewing workstations, as well as at the request of the operator.

In accordance with the functional purpose in the process of taking into account the results, ACSEE should be divided into two functional components:

 

· functional component that ensures the formation and storage of raw data and is classified as a measurement of the ACSEE SS. Measurement of the ACSEE substation consists of current transformers, voltage circuits secondary switching current and voltage transformers, electricity meters, located in the substation. The measuring part should be placed the primary database, which should be the basis of all measurement information ACSEE;

· functional component, which does not participate in the formation of primary data and results in the formation of accounting uses the data from the primary database ACSEE accounting items and is classified as a system of data collection and processing ACSEE SS. ODS should be included all the technical tools that provide information from the accounting items and its subsequent processing, storage and display.

Functional components ACSEE SS must communicate information on the basis of these fundamental provisions:

 

· measuring part (primary database) - a source of information for measuring data system;

· Data system establishes modes of preparation and collection of measurement data objects and monitors their performance.

 

ACSEE SS should provide an opportunity to develop in directions:

 

· increase the degree of automation system functions;

· increase the number of functions;

· improvement of the user interface;

· increase the number of objects and points of delivery;

· expansion of the monitored parameters;

· integration with ACS;

· creation of backup communication channels.

 

Reliability requirements

 

The system relates to articles of continuous, long-term operation, which require periodic maintenance and repair.

Faults and failures of individual hardware should not lead to an accident and failure of other technical means, as well as the whole system.

Software and hardware systems must ensure storage of all counts and accumulated information failures and failures of certain technical facilities, as well as a loss of power.

Restoring ACSEE SS should be carried out by replacing the units, blocks or components that are out of order, as well as resetting, if necessary, software.

 

Reliability of ACSEE SS must be provided:

 

· choice of the optimal functional structure;

· choice of means and the license system and the overall software performance and reliability that meet modern international standards and guarantees enterprise-level;

· prompt replacement of software and hardware that are out of order;

· using duplicate ACSEE SS counters and hardware reserve;

· using effective in terms of the reliability of wiring diagrams and interfaces between system components and processes of collection, processing and transmission of data;

· compatibility of hardware and software;

· the use of modern technologies to develop application software and its testing;

· use of sources of guaranteed continuous (backup) power substation equipment ACSEE and backup power counters.

Reliability ACSEE SS as a whole should be characterized by the following values ​​of reliability indices:

 

· Average life should be at least:

- 5 years for servers ACSEE \ ACSSE;

- - 3 years for AWP;

- 10 years for other technical means ACSEE SS;

· The average time to failure in the performance of a particular function should be at least 10,000 hours;

· Average renewal time operational status shall be not more than 6 hours (subject to availability of spare parts and relevant software and database files).

 

Technical means ACSEE substations must provide the following reliability:

 

· Time availability of software and hardware - should be no more than 60 minutes (with a fully off state to the test of readiness);

· Average shelf life (prior to commissioning) - not less than 9 months.

 

Resuming performance hardware ACSEE SS should be carried out by replacement (or repair) the technical means (part) from the spare parts, tools.

To ensure the reliability of these indicators should be applied ACSEE substation hardware and software techniques (complete copies of the software, spare parts, components and accessories).

The diagnostic program verify that the hardware and software ACSEE SS must fix violation of proper operation ACSEE.

 

 

Requirements for Safety

 

Requirements regarding safety during installation, commissioning and operation ACSEE SS and its components should be presented in the project documentation, and operational documents for specific types of equipment.

Technical means ACSEE substation must comply with electrical and mechanical safety, according to GOST 25861-83 and rules of the safety regulations.

Computer equipment, which are used in servers and AWM must meet the safety requirements of DSTU 4113-2001 and GOST 25861-83.

All external hardware elements ACSEE, which are live must be protected against accidental contact, and themselves have the technical means or protective earth and neutral earthing in accordance with RSEI.

The design of hardware ACSEE SS should ensure protection of personnel against electric shocks and respond to class 01 according to GOST 12.2.007.0-75.

The requirements regarding the safety of current and potential should meet GOST and GOST 12.2.007.3-75 12.2.007.0-75.

Dielectric strength and insulation resistance components ACSEE SS must meet state, interstate and international standards that apply to them, in particular:

· electric power meters - GOST 30206-94 (IEC 687), GOST 30207-94 (IEC 1036-90), State Standard IEC 62053-23: 2012, GOST 6570-96, GOST 30206-94;

· other means of measurement - GOST 22261-94.

 

Accommodation hardware ACSEE and laying lines of communication should be carried out in accordance with the requirements of normative document "Technical operation of power stations and networks" (GCD 34.20.507-2003), GOST R GOST 12.2.091-94 53769-2010i.

 

Technical means ACSEE SS must meet the general requirements for fire safety in accordance with GOST 12.1.004-91.

 

Safety requirements and sanitary requirements for the equipment of workplaces determined by the "Rules of safety in the operation of computers" (approved by public defense work from 10.02.99 №21, registered with the Ministry of Justice of Ukraine on 17.06.99 №382 / 3675).

 

Incorrect operations personnel ACSEE SS should not lead to an emergency situation.