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TECHNOLOGY FOR DESIGNING OVERHEAD LINES OF 0.4KV AND AUTOMATION OF PROJECT OPERATIONS

Volume of “manual work” for all object Volume of work from column 1 in % being automated Project operations Result Description
2.0   Preliminary work    
0.1   Defining climatic parameters for overhead lines of 0.4 and 10kV. For selecting constructions and possible mechanical calculation of wires  
0.1   Selectung supports’ constructions for overhead lines of 0.4kV (material, typical project)    
0.1   The same for spur lines of 10kV overhead lines    
0.2   Decision on using the existing transformer substations of 10/0.4kV.    
0.1(2.5) (2.0) Defining reference spans of 0.4kV overhead lines Mechanical calculation, if not available – for a typical project View
0.1(2.5) (2.0) The same for 10kV overhead lines Mechanical calculation, if not available – for a typical project View
0.1   Defining permissible voltage losses in overhead lines of 0.4kV For selecting the wires of particular sectional areas  
0.1   Studying agreements with the interested parties and making decisions on their implementation    
0.1   Enlarging the village map up to М 1:2000 (1:1000)    
2.5   Preparing a copy of the village map of increased scale for further works    
1.1   Defining the voltage of social, communal, industrial consumers upon entering premises, block of flats for day and evening maximums. For inputting to calculating program  
0.8   Preparing instructions for buildings (consumers)    
0.4   Selecting overhead power supply systems for buildings and transformer substations of 10/0.4kV    
7.5   Preparing a preliminary plan of 10/0.4kV transformer substations with the definitions of zones for power supply For new transformer substations of 10/0.4kV  
12.0   Preliminary wiring of 0.4kV lines For inputting the source data to calculating program, based on the previous design experience  
2.5   Preliminary definition of reference capacity of outgoing 0.4kV line in accordance to protection on transformer substation feeders It is necessary to solve the question of replacing protection on existing substations  
1.8   Preliminary selection of types and capacities of 10/0.4kV transformer substations    
5.9 5.9 Defining the loads in junctions of the lines   View
6.9 6.9 Selecting wires for 0.4kV lines taking into account voltage losses   View
1.4 1.4 Verification of the selected wires for starting electric engines and for heating up.   View
1.9 1.7 Final wiring of 0.4kV lines   View
0.4 0.2 Final selection of types and capacities of 10/0.4kV transformer substations   View
2.9 2.4 Setting up linear sectionalizing fuses and boxes for verification of 0.4kV lines according to protection conditions or refusal   View
0.4   Solving the questions of reliability of 0.4kV overhead lines (reserve from neighboring transformer substations)    
0.9   Definition of spur lines’ routes of 10kV overhead lines to 0.4kV transformer substations with an eye on reliability of 10kV overhead lines.    
3.0   Spotting of the supports of 0.4kV lines (selecting the type of composite supports)    
0.6   Defining the places for outdoor lights    
0.2 0.1 Defining the volume of work on mounting the radio broadcasting network wires   View
0.2 0.1 Defining the number of cables, fittings, insulators, etc.   View
0.2   Spotting of the supports of 10kV lines (selecting the type of composite supports)    
3.0 2.5 Calculating crossings of overhead lines and preparing corresponding layout plans Providing clearances with crossed objects View
3.5 3.0 Calculating mounting stresses and sag 0.4kV and 10kV lines. Preparing corresponding layout plans This is especially important when using self-supporting insulated wires View
6.5 6.0 Preparing the register of all the works for 0.4kV lines’ construction (for every 10/0.4kV transformer substation in particular and for the entire project).   View
1.9 1.2 Preparing a register of works for 10kV overhead line's spur lines (for particular spurlines and for the entire project)   View
2.4 2.0 Selecting fittings, insulators and other equipment for 0.4kV lines’ construction   View
1.4 1.0 The same for 10kV lines’ spur lines   View
0.4 0.3 Preparing specifications of equipment for the project   View
1.3 1.1 Selecting construction equipment for 0.4kV overhead lines depending on the type of supports and constructions   View
0.9 0.7 The same for 10kV overhead lines   View
0.4 0.3 Preparing specification of equipment for the object   View
0.2 0.15 Comprising a registry for concrete and reinforced concrete constructions   View
1.9 1.7 Listing the necessary materials for 0.4kV overhead lines (depending on the type of supports and constructions)   View
0.9 0.7 The same for 10kV spur lines   View
0.4 0.3 Comprising the overall register of the necessary materials for the object   View
0.1 0.05 Calculating and preparing the register for alienating of earth for 10kV overhead lines’ spur lines   View
4.3   Preparing the final layout plan “Overhead lines on the village map…”    
1.1   Preparing (connecting of) layout plans (drafts) for crossings between 0.4 and 10kV overhead lines, 0.4/10kV transformer substations    
0.2   Preparing (connecting of) layout plans (drafts) of grounding devices for supports of 0.4 and 10kV overhead lines, 0.4/10kV transformer substations    
0.3   Connecting the layout plans developed within the department (mounting schemes of supports, undercrossings of 10kV overhead lines, inserted cables, etc.)    
0.8   Filling in the list of works for making an estimate    
0.2   Preparing an estimate for implementing the routs of 0.4 and 10kV lines    
7.9 7.0 Preparing other local and specific estimates and an overall estimate Program for preparing automated estimates  
1.4   Comprising the register for agreed price Program for preparing automated estimates  
0.2   Filling in “Basic data” section for the set of layout plans    
0.8   Overall explanatory note    
0.5   Construction organization    
0.8   Passport of the object under construction    
0.4   Technical and economic performance    
0.1   Tags for documents    
0.1   Preparing the invoice    
0.1   Preparing a list of layout plans for working documents’ folder    
0.2   Preparing the final version of “Justifying materials and original calculations”