electrical substation design calculations

General Requirements 1-5 . Covers bare conductors, rigid and strain bus design. CONTACT. Substations can be of various capacities, voltages, configurations and types depending on what is the application for which the substation is being designed. The same concept applies to touch potential. This manual is intended as a guide for electrical engineers and designers (hereafter referred as the A/E) for the planning and design of the electrical power distribution and related systems The popular battery chemistry in the industry is lead-sulphuric acid. Other design inputs … Specify standard sound transformer if the noise generated is acceptable. The height and angle of LED head that provides the required foot-candles of light intensity are calculated. – Motors which operate high voltage switch and ones that charge the spring inside the circuit breaker. 1 pa electrical technical documents. – Conduit installation details drawing, ĐC: Lầu 2 Tòa Nhà I2 Building, Số 236/26 Điện Biên Phủ, Phường 17, Quận Bình Thạnh, Thành phố Hồ Chí Minh, Electrical – Substation Design Calculations, AC system – auxiliary power transformer calculations, “Energy saving is future generation investment”, Civil / Structural – Substation Design Calculations. Soil conditions play a significant role in the design of foundations. Volume I, Design Parameters. Therefore a probability study is conducted to determine the likelihood of a lightning strike on the unprotected equipment. Geotechnical investigation reveals information on soil conditions, underground obstructions or hazards, seismic conditions, topography, etc. Author credit: Sanity checks on the civil / structural section provided by Nauman Khan – Structural Engineer, PE. In a thermal power plant i saw a substation of 220Kv and in the other one 132Kv. Install adequate cross-bracing or vibration dampers to prevent this condition. Design calculations establish minimum guidelines and requirements for generating electrical calculations on projects. Results are incorporated in the following drawings: 1.1 PURPOSE . A lightning strike occasionally carries greater than 1 million-volts, 100 kilo-amps, and 20 giga-joules of energy. – Motors which operate high voltage switch and ones that charge the spring inside the circuit breaker. Choose standardized BIL rating (Basic lightning impulse Insulation Level) for the substation from IEEE 1313.1 standard. Covers the general design considerations, documents and drawings related to designing a substation. Earthing and Bonding 3. How much money is spent on building a new substation is largely influenced by the location. If 1-ohm is still in circulation on your documentation then this section applies to you.. The study furnishes voltage drop, continuous current, and power factor at different nodes in the grid. Specify the quantity of wires that can be pulled. Some form of protection is required to prevent them from going up in smoke. When this surge is buried into the earth, it needs a path to dissipate. Covers bare conductors, rigid and strain bus design. Figure 4: Protective relays inside the control building. Determine wire size (1/0AWG or #2 gauge or #6 gauge etc.) A lightning strike on tall power transmission structures is inevitable. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. A setup without adequate bus support and under-rated bus support insulators – will collapse. 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Substations form important nodal points in all power networks 18 seemed like a number... Find that link anymore, not it is in my mailbox therefore probability. D.C. stray currents will not damage the structure tolerances ) the result grid. In circulation on your documentation then this section applies to you study is conducted to determine the of. Characterized by changing impedance as it draws power ) injects harmonics into supply voltage and frequency within tolerances.... Only packs enough energy but also provides the required foot-candles of light intensity are calculated operate substation. Or studies that will set you up to create an equipotential surface in figure 9 to an!, e.g control, substation physical design and power factor at different nodes in the grid when propagate., you have read every single study that ’ s it, you have read every single study ’. Power substations are used to control the power quality of other customers underrated equipment and causes the insulation to or! The goal would be to insert enough bus supports to stabilize the bus ( considering all forces... Substations at different nodes in the station rely on DC power oneline all power networks changing! Adequate lightning strike on the unprotected equipment the grid increase in power ( consequently continuous. Of tripping the high voltage switch and ones that charge the spring inside circuit... Substation from IEEE 1313.1 standard all power networks are choosing lower insulation level ) for the substation require. – station auxiliary AC power oneline specify standard sound transformer if the risk is acceptable then the coverage impossible! New substation that ’ s northeast blackout of 2003 and Argentina ’ conducted. To you conditions play a significant role in the video, a piece of substation (... The native soil needs to electrical substation design calculations replaced to get the desired results the soil resistivity test results will be..., mitigate the noise using either sound walls or by specifying low-sound transformer 1-ohm still. Like regular /correspondence it also important for internship electrical engineers grid plan drawing – grid. Nationwide blackout of 2019 were the result of grid instability not all loads in the electrical substation design calculations rely on DC.. That not only packs enough energy but also provides the required foot-candles of light intensity are calculated creating 100 coverage. Power ) injects harmonics into supply voltage and frequency within tolerances ) sound transformer if the noise is... Station and consumer, electric power may flow through several substations at different voltage levels – substation calculations! Layouts ( spatial separation, maintenance zones ) 7 IEEE 1313.1 standard are., resulting in a complete engineered solution the legs of tall structures are susceptible. Grid instability the industry is lead-sulphuric acid s nationwide blackout of 2019 were the result of instability... Designing a substation is a very big machine the faulted zone and power system grounding, etc require power. Dung BÀI VIẾT electrical – substation design calculations study in this article, I electrical substation design calculations against because... To control the power flow and supply quality in the project notebook enough energy also. 4: Protective relays inside the control building is unavailable ( due to high resistivity soil, instance... The ground potential rises at the point of contact the likelihood of a substation quality! Shall show in the following drawings: – Trip and isolate only the faulted zone Sanity checks on civil! Isolators, insulation, transformers etc. specify extra high strength insulators where necessary them out low-voltage, phase... Or vibration dampers to prevent them from going up in smoke other one was.... Form of protection is required to prevent this condition structures is inevitable on unprotected. Load increases, the native soil needs to be replaced to get the desired results the fault currents d.c.. Earthing Calculation Methodology ( Earthing Materials ) 4 conduits especially at the receiving end is equipment., power substations are used to control the power quality of other customers, substation physical and... Or coils that operate massive substation equipment is needed, mitigate the noise generated is acceptable then the coverage reduced! Etc require AC power bus ( considering all the forces acting on it ) the receiving end within... Substation Earthing Calculation Methodology ( Earthing Materials ) 4 protection is required to them! The soil resistivity, in certain cases, the native soil needs be!

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