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TECHNOLOGY FOR DESIGNING UNITIZED TRANSFOMER SUBSTATIONS

TECHNOLOGY FOR DESIGNING UNITIZED TRANSFOMER SUBSTATIONS (UTS) OF 35/10KV AND AUTOMATION OF PROJECT OPERATIONS

The technology for constructing unitized transformer substations (UTS) of 35/10kV reflects the basic sections and project operations, their sequence and relative man-hours.

Basic technological sections in designing UTS of 35/10kV
Section Name "Manual" works in % from all the works
1. Electrotechnical part, including: 54
- Primary connection 33
- Operation and automation 17
- Relay protection and automation 4
2. Architecture and construction part, including: 33
- Sanitary engineering 2
3. Means of dispatching and technological management (MDTM) 4
4. Estimating documentation 9

Volume of “manual work” for all object Volume of work from column 1 in % being automated Project operations Result Description
Electrotechnical part of 35/10kV transformer substations
0.5   Study power and energy resources and their congruence    
0.5   Study the agreements of the interested organizations and make decisions in accordance with them    
1.0   Order drafts, rough materials for the necessary scheme    
0.25   Receive the task from RPA group with the source data and study it    
0.25   Receive the task from communication group for setting up high-frequency communication equipment  and study it    
1.0   Prepare a draft of connection with the transformer substation    
1.0   Prepare the draft for the primary connections    
1.5   Prepare the draft: plan and transformer substation in section    
1.0   Prepare calculation of lightning protection for the transformer substation and the draft for lightning protection    
0.25   Receive drawing paper from for the general plan of transformer substation and materials for technical study from the archive    
0.25   Decide with the chief engineer of the project on the positioning of transformer substations on the general plan    
0.5   Draw the plan of the transformer substation on the drawing paper    
0.25   Order a copy of the general plan for construction general plan    
1.5   Prepare the plan for foundations    
1.0   Prepare the draft of the basic data for the set of drafts on architectural and constructing solutions    
1.25   Link the architectural-and-constructing-solutions drafts to typical drafts    
1.5 1.0 Prepare the entire register for all the materials    
1.0   Prepare the task for constructors and coordinate it with the chief engineer of the projects    
1.0   Give the task to the constructors    
3.0 1.5 Calculate the grounding of transformer substation and prepare drafts for grounding   View
1.0   Prepare the draft for substation lighting    
1.0   Prepare the draft of general data for “Electrotechnical solutions” set of drafts    
1.0   Link the “Electrotechnical solutions” set of drafts to the typical drafts    
1.0   Prepare the draft “Task to the plant for UTS of 35/10kV”    
1.0   Prepare rough materials for the set of drafts of relay protection automation according to the task for relay protection automation    
3.0   Prepare mounting schemes for outdoor switchgear boxes of 10kV and relaying boxes    
1.0   Check cable connections between the outdoor switchgear boxes and relaying boxes    
0.5   Verify the cable direction, number of occupied cores and select cable according to their number of cores and sectional areas    
1.0   Prepare the plan for the cables layout    
0.5   Measure the lengths of the cables and enter them into the cables catalog    
0.5   Define the means of cabling    
0.5   Check the types of cables depending on the means of cabling    
0.25   Prepare the entire register for power and control cables    
0.5   Receive the general plan form communications workers and port to it the route of sound cable, measure the lengths and enter them into the cable catalog    
0.5   Prepare the draft of general data for the set of relay protection automation drafts    
1.0   List the necessary works for estimates, make an agreement with the chief engineer, and give them to constructors    
1.0 0.8 Prepare specifications for equipment   View
1.0   Prepare the front pages, tags, lists of drafts and have them printed    
0.5   Take the entire register for materials from the constructors, fill in the tubes and metal the project is short of and give back to the constructors    
1.0   Take the entire register of metal demand from the constructors, fill it in, and give it to communication workers, sanitary workers, and totalup the project    
0.25   Have the front pages and tags printed    
6.5   Fill in the explanatory note, passport of the project, construction organization, prepare invoice and send it to communication workers    
0.25   Receive text documentation from the communication workers and send it along to the constructors    
0.25   Receive text documentation from the constructors workers and send it along to the line workers    
0.25   Receive text documentation from the line workers workers and send it along to the estimators    
0.25   Receive text documentation from the estimators    
0.75   Fill technological and economic data to the explanatory note    
0.25   Hand the project over to the chief engineer    
0.25   The project signed by the chief engineer pass over to the chief specialist and head of the department    
0.25   Receive the signed project from the head of the department and hand it over to the norms committee    
0.25   Have the project signed by the chief engineer    
0.25   Fill in the books for technical and economic data    
0.25   Have the project documentation copied    
0.25   Receive the copies of the project documentation, sort it out    
0.5   Receive equipment specifications from subcontractors and bind them    
0.5   Receive annexes for explanatory note, construction organization from subcontractors, enclose the annexes according to the list    
0.25   Have the invoice signed in … Deliver the project according to the invoice.    
Relay protection automation for 35/10kV substations
0.8 0.7 Calculating short-circuit currents in 35kV network  and after 35/10kV transformers   View
0.4 0.35 Calculating differential transformers protections for the designed 35/10kV transformer substation   View
0.8 0.3 Calculating relay protection automation for the designed 35/10kV transformers (exact) and for 10kV feeders (approximate)   View
1.2   Calculating relay protection automation for 35kV network    
0.4   Verification of the works performed    
0.4   Preparing the task for electricians and drafts for calculations of relay protection automation    
Means of dispatching and technological management  (MDTM) of 35/10kV transformer substation
0.2   Studying Technical Conditions, Power and Energy Resources, source data and message history on the project    
0.08   Preparing tasks for subgroups    
1.2   Works on basic drafts    
0.16 0.15 Calculating high-frequency channels   View
0.8   Listing the necessary wors    
0.48   Finalizing all the drafts    
0.4 0.3 Preparing specifications, registers   View
0.12   Preparing explanatory note    
Architecture and construction solutions for 35/10kV transformer substations
0.62   Studying geological, climatic conditions for the object, task for design, agreements, solutions for their implementation. Preliminary spotting of buildings and constructions    
3.1   Developing and drawing the general plan, vertical planning (relief organization)    
0.62   Fencing in the transformer substation    
1.86   Developing the scheme for foundations layout based on construction technology of the transformer substation    
5.9 3.7 Calculating consolidation of supports   View
3.7   Based on the calculation, construction solutions, preparing the drafts of supports’ consolidation    
0.62   Preparing a draft for general data for general-plan and architecture-and-construction-solutions sets of drafts, as well as for connecting oil collector and setup drafts    
1.55   Calculating the necessary works and filling in the works for the estimates    
0.15   Filling in the passport    
0.62   Overall explanatory note    
1.24   Construction organization    
7.5 5.0 Preparing and filling in the object’s passport for construction organization and the register of required materials    
0.47   Preparing the passport and the register of required materials (have them signed, copied, sorted out, bound, tagged)    
2.0 1.6 Preparing specifications, registers   View
0.15   Copying text documentation, tags for text documentation    
0.15   Sorting out and binding text documentation    
0.15   Preparing the list of drafts for “originals” folder    
0.15   Preparing the volume of “Justifying materials and original calculations”    
0.15   Preparing the invoice    
Sanitary part of 35/10kV transformer substation
1. Outer networks
0.06   Preparing plans for tracing the networks and specifying technical conditions    
0.04   Defining diameters of pipe-lines, chutes' measurements    
0.4   Preparing the plan of the networks    
0.2   Preparing longitudinal profiles    
0.04   Selecting reinforced-concrete parts for the chutes. Detailed plan for the chutes    
0.06   Preparing the draft for general data    
0.06 0.05 Preparing a specified order for reinforced concrete   View
0.06 0.05 Preparing equipment specifications   View
0.24   Listing the necessary works    
0.06 0.04 Preparing the passport and required materials’ register    
0.04   Preparing explanatory note, construction organization section    
0.04   Preparing the drafts for the project release    
Sanitary part of 35/10kV transformer substation
2. Oil-outlets
0.04   Selecting pipes’ diameter    
0.06   Tracing oil-outlets on the marking draft and general plan    
0.1   Defining the marks and inclines    
0.06 0.05 Preparing specification   View
0.1   Listing the necessary works    
0.04 0.03 Preparing the passport and register of required materials    
Sanitary part of 35/10kV transformer substation
3. Linking typical albums
0.24   Linking typical albums and drafts developed by the department for the transformer substation    
0.16   Listing the necessary works    
0.06 0.05 Preparing equipment specification   View
0.04 0.03 Preparing the passport and register of required materials    
0.1   Preparing for release    
Estimates for 35/10kV transformer substation
2.7 2.2 Preparing local estimates for construction accoding to Unified Regional Unit Prices, … and Building Code Program for preparing automated estimates  
0.4   Preparing local estimates according to ПЭСС-2-84 and ПЭСС-1-84, plot allocation, snow removal, calculations, specific prices    
0.72   Prepearing local estimates for equipment and mounting the transformer substation according to ПЭСС-2-84 (1st and 2nd junctures), for compensating the losses or agricultural sector, lifting gear, transportations of workers    
0.18 0.15 Additional mounting works. Preparing local estimates according to pricelists, ССРСЦ and Building Code Program for preparing automated estimates  
2.3 2.0 The same for communication Program for preparing automated estimates  
0.18 0.15 Preparing estimates for objects Program for preparing automated estimates  
2.0   Preparing overall estimate and register of agreed prices    
0.13   Verifying the estimates    
0.05   Preparing front pages, tags, tables of contents and explanatory note for the estimate documentation    
0.18   Finalizing estimate documentation (signatures, etc.)    
0.23   Sorting out the estimates after copying. Having them bound and sent.