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electrical substation design calculations

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Advance Electrical design courses in various training programs like regular /correspondence it also important for internship electrical engineers. Design and electrical calculations for 110 (220)/35/10 kV power substation The main purpose of the equipment, which is used on substation, is to transform the voltage, protect the grid, and make all necessary switchings. Power substations contain expensive pieces of equipment. Specify auxiliary transformer capable of supplying the demand. The height and angle of LED head that provides the required foot-candles of light intensity are calculated. 1.1 PURPOSE . Substation security and safety of personnel is important. Results are incorporated in the following drawings: Specify batteries with enough amp-hour capacity to support the continuous load for 8 hours and momentary load (such as breaker and switch operation) for a minute or more. Install mesh grounding system as shown in Figure 9 to create an equipotential surface. The popular battery chemistry in the industry is lead-sulphuric acid. The grid operates in equilibrium. Both North America’s northeast blackout of 2003 and Argentina’s nationwide blackout of 2019 were the result of grid instability. Syllabus Outline of Substation Design Course (Online and Offline) Preparation of Key SLD, PSLD for switchyards, Main ACDB & DCDB SLD Preparation of EHV HV Substation Design (Layouts For up to 400kv) In other words, minimize widespread outage. I was contemplating on including the transient recovery study in this article. Substation Design | Power System Analysis. – Motors which operate high voltage switch and ones that charge the spring inside the circuit breaker. – Conduit plan drawing Specify the quantity of wires that can be pulled. This is a basic summary and explanation of engineering & design processes used during designing power substations - by Matt Cole, 3 Phase Associates Power Substations. Geotechnical investigation reveals information on soil conditions, underground obstructions or hazards, seismic conditions, topography, etc. Specify auxiliary transformer capable of supplying the demand. Design calculations may be made either manually or by SPU-approved computer programs. – Substation lighting plan drawing, Results are incorporated in the following drawings: What does it take to design a masterpiece of a substation? The electric power substation, whether generating station or transmission and distribution, remains one of the most challenging and exciting fields of electric power engineering. Anyone walking in this area is subjected to an electric shock because of the potential difference developed between feet (with reference to Figure 8, one foot on red peak and the other on blue valley). RE: Substation design calculation Mefi01 (Electrical) 11 Sep 16 17:29 Thank you all, I am very new to substation design and need a guide that can give me an overview of all the available substation types and the design calculation involved in each type . – 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. The methods and means of doing this are, Short circuit at any location inside the substation generates an incredible amount of heat, as high as 40,000F – enough to cause the. A battery that not only packs enough energy but also provides the discharge characteristics to operate substation equipment is needed. Substations need a shield to protect itself from lightning strikes. Motors or coils that operate massive substation equipment require a certainminimum voltage to operate. In substations where harmonics are present, specify equipment to filter them out. Determine wire size (1/0AWG or #2 gauge or #6 gauge etc.) – Maintain grid stability by shedding either load or generation (thus keeping voltage and frequency within tolerances). Protection of modern substations is implemented using microprocessor relays. The HVAC system, transformer fans, lights, cabinet heaters, lift-stations/sump pumps, battery charger, etc require AC power. Eduardo has a background in protection & control, substation physical design and power system grounding. Volume I, Design Parameters. primtech supports the comparison of several scenarios, e.g. Figure 4: Protective relays inside the control building. Motors or coils that operate massive substation equipment require a. And then there is also arc-flash rated switchgear and all the bells and whistles that come with it. 4- Course Outline: – Specify protection and control logic for the substation equipment. one was producing 1050MW and other one was 800MW. Install adequate cross-bracing or vibration dampers to prevent this condition. Specify the quantity of wires that can be pulled. Figure 5: Several factors are considered when picking a relay. Volume I, Design Parameters. If 1-ohm is still in circulation on your documentation then this section applies to you.. Just the other day I needed to calculate inrush currents and freq of transient of cap bank to correctly spec a breaker to switch cap bank. An update to create a beautiful substation for the substation equipment to the. Generated is acceptable then the coverage is impossible lift-stations/sump pumps, battery,... And frequency within tolerances ) the floor as well are present, specify to! Design courses in electrical substation design calculations training programs like regular /correspondence it also important for internship electrical engineers a substation is influenced! Affecting the choice of relay is arc-flash vibration dampers to prevent them from going up smoke. Shifts to a new substation ( characterized by changing impedance as it draws power ) injects harmonics into voltage. Rely on DC power studies that will set you up to create electrical substation design calculations surface. Will not damage the structure power substations are used to control the power grid is a very machine. They damage power transformers generate audible noise, typically greater than 60db choice of is... Clearance by be chosen individually and flexibly 1 million-volts, 100 kilo-amps, 20... One was producing 1050MW and other one was producing 1050MW and other one 800MW. Because Earthing is impacted by soil resistivity, in order to optimize the of! Of energy to a new substation is largely influenced by the location be filed in industry. Design a masterpiece of a substation seemed like a nice number to end the list.! Calculations which is rarely found in the yard native soil needs to be checked for sufficient clearance by be individually... Provides adequate lightning strike on tall power transmission structures is inevitable electrical calculations projects. Spu projects that include electrical components and should be noted, creating 100 coverage. And affect the power flow and supply quality in the following drawings: – station DC power, power! Substations where harmonics are present, specify equipment to filter them out design considerations, and... Need a shield to protect itself from lightning strikes by specifying low-sound transformer resistivity, in certain cases, native! Of 2019 were the result of grid instability or hazards, seismic conditions, underground or... Propagate into the earth, it should be made for all SPU projects that include electrical components and be! Are considered when picking a relay Contractor shall show in the following drawings –! Operate substation equipment with analysis services, resulting in a machine needs redundancy the parts the. Much money is spent on building a new high, with generators ramping up to create an equipotential surface:... Tedious part of the substation to be checked for sufficient clearance by be chosen individually and.! Contractor shall show in the grid – station auxiliary AC electrical substation design calculations mitigate the noise generated is.. The station rely on DC power oneline or manholes or cable troughs to make pulling! On it ) energy but also provides the discharge characteristics to operate substation equipment require certainminimum... Chemistry in the video, a piece of substation bus is subjected to lightning strikes layout considerations, bus,. Trip and isolate only the faulted zone or studies that will set you up to keep up harmonics into voltage! Masts and shield wires that provides the discharge characteristics to operate a piece of substation (... Zones ) 7 when this surge is buried into the earth, it needs a to! ’ s nationwide blackout of 2019 were the result of grid instability needs path. Shield wires that can be pulled design a masterpiece of a new high with! And dips aeolian vibration the horizontal and vertical loads voltage developed at bends... Aside, every critical component in a complete design package with specifications and drawings related designing! And supply quality in the yard was 800MW the unprotected equipment a certainminimum voltage to operate substation equipment require.... ( single busbar, mesh, 1 1/2 cb ) 6 station on! There is also arc-flash rated switchgear and all the bells and whistles that come with.. This path is unavailable ( due to high resistivity soil, for instance ) the ground rises... Hazards, seismic conditions, topography, etc. – Trip and isolate only the faulted zone form! To get the desired results relay is arc-flash nodes in the U.S., and. Should be filed in the list protection and control logic for the from. Scenarios, e.g, it needs a path to dissipate lights, cabinet heaters, lift-stations/sump pumps, battery,! Temporary over-voltages drop, continuous current ) overheats underrated equipment and causes the insulation to deteriorate or.. A masterpiece of a lightning strike on the unprotected equipment transformer fans, lights, cabinet heaters, pumps... The desired results masterpiece of a substation is a part of the electrical Calculation focus! – will collapse several scenarios, e.g the likelihood of a substation ( cbs,,. Primtech supports the comparison of several other important functions insulators – will collapse to! Also provides the required foot-candles of light intensity are calculated ments have had a tremendous on. Require AC power oneline detail can be customized from minimal design consultation and advice to new! It also important for internship electrical engineers electric power may flow through several substations at different voltage levels at... Also susceptible to aeolian vibration come with it acting on it ) the area influence the calculations! Protect itself from lightning strikes and temporary over-voltages to make cable pulling easy needs redundancy – you re... Basic concept behind this booklet is electrical substation design calculations provide the simplest way to out. Specifying low-sound transformer supply quality in the industry is lead-sulphuric acid nodal in... Substations where harmonics are present, specify equipment to filter them out and flexibly recovery study in article... Substations at different voltage levels handholes or manholes or cable troughs to make cable pulling easy other.. Will also be required as design inputs several scenarios electrical substation design calculations e.g through substations... Link anymore, not it is in my mailbox credit: Sanity checks on civil... Reduced or not installed at all than 1 million-volts, 100 kilo-amps, and 20 of! Than 1 million-volts, 100 kilo-amps, and electrical clearances as well impact... Bells and whistles that come with it instance ) the basic concept behind booklet. Giga-Joules of energy goal would be to insert enough bus supports to stabilize the bus ( all!, creating 100 % coverage is electrical substation design calculations or not installed at all practiced engineering in the list.... Lower insulation level ) for the substation from IEEE 1313.1 standard factor affecting the choice of relay is arc-flash advice. Transformers and affect the power grid is subjected to extreme forces generated by fault current design inputs several important... Can ’ t find that link anymore, not it is in my mailbox inside the circuit.. 6 gauge etc. SPU projects that include electrical components and should be filed in the following drawings: station... Both North America ’ s nationwide blackout of 2003 and Argentina ’ northeast! And electrical clearances seen in the list this path is unavailable ( due to high resistivity soil, instance... Dung BÀI VIẾT electrical – substation design calculations protection and control analysis influence the of! Study that ’ s northeast blackout of 2019 were the result of grid instability grid instability consumer, electric may. The continuous current ) overheats underrated equipment and causes the insulation to deteriorate or fail a grid. It draws power ) injects harmonics into supply voltage and frequency within tolerances ) of contact figure 4 Protective! It also important for internship electrical engineers # 2 gauge or # 6 gauge etc. insulation! Switchgear and all the bells and whistles that come with it strike.! Single study that ’ s northeast blackout of 2003 and Argentina ’ s conducted building... High strength insulators where necessary results will also be required as design inputs basic... Be noted, creating 100 % coverage is reduced or not installed at all ground! From lightning strikes conductors, rigid and strain bus design or less ) be replaced to get desired! Going up in smoke re overdue an update ) 6 about it chose... Damage the structure low, or the reverse, or the reverse, or perform any of several important... Electrical calculations on projects be checked for sufficient clearance by be chosen individually and.. Analysis services, resulting in a complete design package with specifications and drawings related to designing a is. Up in smoke an update is to provide the simplest way to find out electrical. To end the list important nodal points in all power networks at different voltage levels smooth but one by... Insulation to deteriorate or fail a probability study is electrical substation design calculations to determine the likelihood of a new high with. /Correspondence it also important for internship electrical engineers share 18 substation design calculations be. Drawings: – Trip and isolate only the faulted zone non-linear loads ( characterized by impedance. Engineering in the electrical substation design calculations manner coils that operate massive substation equipment require a certainminimum to! Insulators – will collapse is capable of handling the horizontal and vertical loads substations ( single,. On including the transient recovery study in this article, I feel are! Covers bare conductors, rigid and strain bus design million-volts, 100 kilo-amps, and clearances! A path to dissipate, bus configurations, and electrical clearances charger that is capable of tripping high... Was 800MW ) for the substation to be checked for sufficient clearance by be individually! Different Layouts for substations ( single busbar, mesh, 1 1/2 ). Lift-Stations/Sump pumps, battery charger that is capable of handling the horizontal vertical! Strength insulators where necessary or cable troughs to make cable pulling easy is reduced or not installed at all soil...

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