Protection System. The Seller will install necessary current limiting devices such as thyristors etc. if required. The Seller shall provide protection system in compliance to Grid Code requirement for short circuit level, neutral grounding, current unbalance, limiting of harmonics, fault clearing time etc. as per data provided by the Purchaser under the interconnection study.
7. System fault level: [ ] MVA 8. Voltage and Frequency Limitations
Protection System. Protection System shall be designed to reliably detect fault on various abnormal conditions and provide an appropriate means and location to isolate the equipment or system automatically. The protection system must be able to detect power system faults within the zone. The protection system should be able to detect abnormal conditions such as equipment failures or open phase conditions Further, the following shall also be applicable:
Protection System. Protection System shall be designed to reliably detect faults on various abnormal conditions and provide an appropriate means and location to isolate the equipment or system automatically. The protection system must be able to detect power system faults within the zone. The protection system should be able to detect abnormal conditions such as equipment failures or open phase conditions. Every Element of the Power system shall be protected by a standard protection system having the required reliability, selectivity, speed, discrimination and sensitivity. Where failure of a protective relay in the M/s. ________(Transmission Licensee)_ system has substantial impact on the grid, it shall connect an additional protection as back up protection besides the Main protection. Notwithstanding the protection systems provided in the grid, the M/s. ______ __(Transmission Licensee) shall provide requisite protections for safeguarding their system from faults originating in the grid. Bus bar Protection and Breaker Fail protection or Local Breaker Back-up Protection shall be provided wherever stipulated in the Regulations. Special Protection Scheme such as Under Frequency relay for Load shedding, voltage instability, angular instability, generation backing down or Islanding Schemes may also be required to be provided to avert system disturbances. Protection co-ordination/Relay co-ordination shall be done at State level in coordination with the STU and with WRLDC/WRPC. The M/s. ______ ____(Transmission Licensee) shall develop protection manuals conforming to various standards for the reference and use of its personnel. All 220 kV and above stations shall have bus bar protection scheme, over flux, under voltage, over voltage relays and any other protection recommended by Regional PSCC of WRPC/STU. Users shall provide information to SLDC regarding installation and healthiness of protective equipment like df/dt relays etc., reactive compensation on UFR monthly basis.
Protection System a. The Contractor provides a protection system and is responsible for the designing, engineering, supply, delivery, configuring, installation and commissioning of new protection system and devices.
b. The Contractor provides all new Head End Control Units (HECU) and protection devices as required by the Works. CONTRACT 73 ECC3 COVER PAGES
c. The Contractor incorporates all new and/or existing protection devices into the new and/or existing HECUs as required by the Works.
d. The Contractor is responsible for the configuring and/or reconfiguring of all new and existing HECU’s as required by the Works.
e. All new HECU’s supplied as part of the Works are of the CT Systems MK8 V2.0 type.
f. All new protection devices supplied as part of the Works are of the CT Systems type and make use of a 48 VDC power supply.
g. All new protection devices supplied as part of the Works match the devices currently being used at Majuba Power Station.
h. The interface between all new and existing HECU’s and the DCS is of the hard-wired Binary Coded Decimal (BCD) type. No bus interface is permitted.
Protection System. (i) The solar PV array structure shall be grounded properly using adequate number of earthing kits. All metal casing / shielding of the solar PV system shall be thoroughly grounded to ensure safety of the solar PV system.
(ii) The solar PV system shall be provided with lighting and over voltage protection. The main aim in this protection shall be to reduce the over voltage to a tolerable value before it reaches the solar PV system.
(iii) The system should have protection against battery overcharge and deep discharge conditions.
(iv) Fuses should be provided to protect against short circuit conditions.
(v) A blocking diode should be provided as part of the electronics to prevent reverse flow of current through the PV module(s) in case such a diode is not provided with the Solar Module(s).
(vi) Full protection against open circuit, accidental short circuit & reverse polarity should be provided.
Protection System. (i) The UV reactor chamber must be stainless steel with minimum Electro Polished
(ii) The UV lamp must be easy to replace and maintain
(iii) Adequate grounding must be provided for solar PV system
(iv) Electrical system and UV sterilizer unit must be properly attached inside a corrosive free casing.
(v) Fuses should be provided to protect against short circuit conditions.
(vi) A blocking diode should be provided as part of the electronics to prevent reverse flow of current through the PV module(s) in case such a diode is not provided with the Solar Module(s).
(vii) Full protection against open circuit, accidental short circuit & reverse polarity should be provided.
Protection System a. Protection for the electrical equipment shall be designed with the following objectives: • prevent and/or minimize damage to equipment • minimize the effect of the disturbance on the uninterrupted portion • of the system • prevent injury of personnel in the event of electrical faults or abnormal system conditions • minimize the loss in power generation
b. The protective system shall be designed to assure the maximum continuity of service with minimum damage to equipment. Protective devices will constantly monitor the electrical system to detect abnormal conditions and automatically initiate isolation of affected equipment nearest to the fault. Selectivity shall apply to phase to phase, 3 phase, and ground faults.
Protection System. One (1) fire protection system for the Facility building, cooling tower, T/G and RDF processing equipment. In addition, fire hose stations and fire extinguishers throughout the entire Facility. It will include all pumps, tanks, piping, valves, fire extinguishers, sprinklers, hydrants, hose cabinets, hose fittings, fire detectors and accessories.
Protection System. Protection System shall be designed to reliably detect faults on various abnormal conditions and provide an appropriate means and location to isolate the equipment or system automatically. The protection system must be able to detect power system faults within the zone. The protection system should be able to detect abnormal conditions such as equipment failures or open phase conditions. Every Element of the Power system shall be protected by a standard protection system having the required reliability, selectivity, speed, discrimination and sensitivity. Where failure of a protective relay in the MSETCL’s system has substantial impact on the grid, the MSETCL shall connect an additional protection as back up protection besides the Main protection. Notwithstanding the protection systems provided in the grid, the MSETCL shall provide requisite protections for safeguarding his system from faults originating in the grid. Bus bar Protection and Breaker Fail protection or Local Breaker Back-up Protection shall be provided wherever stipulated in the regulations. Special Protection Scheme such as Under Frequency relay for Load shedding, voltage instability, angular instability, generation backing down or Islanding Schemes may also be required to be provided to avert system disturbances. Protection co-ordination issues shall be finalized at regional levels by Regional Electricity Board/ Regional Power Committee and for Intra-State lines by STU The MSETCL shall develop protection manuals conforming to various standards for the reference and use of its personnel.
Protection System.
(1) Direct high speed tripping for internal faults,
(2) Timed backup tripping at 0.4 seconds (distance operation),
(3) Line test / stub bus capability,
(4) Direct transfer tripping via digita l fiber optic communication system and Power Line Ca rrier (PLC)
(5) High resistance open phase protection (HIROP).
